Repair of skin defect with 3D-bioprinted organoid artificial skin derived from adult stem cells in mice / 中华创伤杂志

Objective:To construct 3D-bioprinted organoid artificial skin derived from adult stem cells and investigate their effects on repair of skin defect in mice.Methods:The cell suspension mixture was prepared with human skin keratinocytes, fibroblasts and vascular endothelial cells with a ratio of 2∶1∶1 and cultured in ultra-low attachment plates, and morphological changes of cell spheres were observed with an inverted phase contrast microscope. After 7 days of culture, cell spheres were collected and immunofluorescence staining was performed to characterize the expression and structural distribution of the epidermis, dermis and blood vessels. The artificial skin composed of skin organoids were printed through 3D printing and morphology of printed artificial skin and dressing was observed. Ten immunodeficient balb/c female mice were divided into hydrogel group and organoid group, with 5 mice in each group with the method of random number table. The full-thickness skin defect model with a diameter of 1 cm was established in all mice, and the wound was covered with the hydrogel dressings in hydrogel group and with 3D-printed skin organoids of the same size in organoid group. Wound healing and healing rate of the two groups were observed at 0, 4, 8, 12 and 16 days after modeling. At 16 days after modeling, HE staining was performed on wound skin samples to observe the epidermal keratosis and dermal epidermal junction of the wound surface and Masson staining to observe the density of collagen fibers and dermal fiber thickness of the wound surface.Results:(1) The cell suspension mixture of keratinocytes, fibroblasts and vascular endothelial cells could self-aggregate into cell spheres in the ultra-low attachment plates, and it was observed with the inverted phase contrast microscope that the volume of cell spheres gradually increased with the extension of culture time. (2) Immunofluorescence staining of the cell spheres showed that epidermal markers such as keratin (K)1, K10, and K14 were expressed in the outer layer of the cell spheres, and dermal markers such as vimentin (VIM) and vascular markers CD31 were expressed in the core, which indicated the epidermis was located in the outer layer of the sphere, and the dermis and blood vessels were located in the core of the sphere, with the same structural characteristics of the skin organoids. (3) The 3D-printed organoid artificial skin and hydrogel dressing were round and transparent, with a diameter of 10 mm and a thickness of 1 mm. (4) As shown in the general observation of the wound surface, the wound area of both groups decreased with the extension of treatment time. The wound of the organoid group healed faster, which showed obvious epithelization at 4 days after modeling and basic wound healing at 16 days after modeling. At 0 day after modeling, there was no obvious difference in the appearance of wound surface between the two groups. At 4 and 8 days after modeling, the wound healing rates were (31.7±1.0)% and (52.4±5.4)% in the organoid group, and (24.3±6.8)% and (45.4±7.0)% in the hydrogel group ( P>0.05). At 12 and 16 days after modeling, the wound healing rates were (78.6±8.0)% and (91.1±5.6)% in the organoid group, and were (58.5±5.4)% and (71.9±7.8)% in the hydrogel group ( P<0.01). (5) HE staining showed that in the organoid group epidermal keratinization was found better, with the epidermis being more intact and well attached to the dermis. Epidermal keratinization was not complete in hydrogel group and the epidermis and dermis were obviously separated. Masson staining showed the formation of collagen fiber structures in the wound surface of both groups, which were blue and reticular. The collagen fiber structure was more compact and the dermal fiber thickness was smaller in the organoid group, while the collagen fiber structure was loose and the dermal fiber thickness was greater in the hydrogel group. Conclusions:Adult stem cells of skin can successfully form skin organoids in 3D culture conditions and organoid artificial skin can be constructed with 3D bioprinting technology. Compared with hydrogel dressing, 3D-bioprinted organoid artificial skin can significantly improve the healing rate in mice, with better epidermal keratinization and closer attachment of the epidermis to the dermis. Moreover, the collagen fiber structure of the wound is more compact, with smaller dermal fiber in thickness.

Lesiones mortales por armas traumáticas: reporte de caso / Fatal injuries due to traumatic weapons: Case report

Introducción. Las armas de energía cinética son diseñadas para generar lesiones dolorosas y superficiales. Sin embargo, las lesiones asociadas causan confusión al ser abordadas como heridas por proyectil de arma de fuego, convirtiendo el enfoque y el manejo correcto en un desafío. El caso presentado describe un paciente herido en el cuello por arma traumática con el objetivo de analizar factores que permitan identificar este tipo de heridas y sus implicaciones en el manejo. Caso clínico. Paciente masculino de 31 años que ingresó con intubación orotraqueal, remitido de una institución de nivel 2, con herida por aparente proyectil de arma de fuego con trayectoria transcervical. Se encontró hemodinámicamente estable, pero con dificultad para la valoración clínica, por lo que se realizaron exámenes complementarios que descartaron lesión aerodigestiva. La tomografía de cuello reportó proyectil alojado en musculatura paravertebral izquierda, descartando trayectoria transcervical. Discusión. El comportamiento de las lesiones asociadas a los proyectiles de armas depende de varios factores, como el tipo de material del proyectil, su velocidad y las propiedades del tejido impactado. Se presentó un caso en que inicialmente se sospechaba una lesión transcervical, pero con la evaluación se identificó el proyectil cinético en la musculatura paravertebral. Conclusión. En el abordaje de un paciente con sospecha de herida por proyectil de arma de fuego se debe considerar ante todo la respuesta clínica y la correlación del supuesto vector del proyectil con las lesiones sospechadas. La evaluación imagenológica permite identificar oportunamente los proyectiles y evitar procedimientos o terapias innecesarias que forman parte del manejo convencional del paciente con trauma penetrante

Introduction. Kinetic energy weapons are designed to produce superficial and painful injuries. Nevertheless, the approach of these patients in the emergency department can be confusing as they can be managed as gunshot wounds. This case describes a patient with an injury in the neck caused by kinetic energy gun. In addition, we analyzed factors that might identify these wounds and their implications in the management. Clinical case. A 31-year-old male patient who presented to the emergency department referred from a second level hospital with gunshot wound with suspected trans-cervical trajectory. They performed orotracheal intubation and transferred to our institution. Due to the patient ́s hemodynamic stability and impossibility for clinical evaluation, test and radiology tests were performed. These ruled out any aero-digestive injuries. The CT-scan reported a bullet hosted in the left paravertebral muscles, ruling out a trans-cervical trajectory. Discussion. Several factors contribute to the injuries produced by kinetic energy weapons. The injury patterns may vary according to the bullet material, muzzle velocity and impacted tissue characteristics. In this case, an initial trans-cervical injury was suspected and due to clinical evaluation we identified the bullet hosted in the paravertebral muscles. Conclusion. In the approach of a patient with suspicion of gunshot wound, as surgical team we must consider clinical manifestations and the correlation of the vector with suspected injuries. Evaluation of diagnostic imaging allows the identification of traumatic bullets, avoiding unnecessary procedures in the conventional management of patients with penetrating trauma

Negative pressure wound therapy and functional dressings in primary repair of spinal cord injury complicated with lacunar soft tissue defects: a comparison of efficacies / 中华创伤杂志

Objective:To compare the efficacies of negative pressure wound therapy (NPWT) and functional dressings in primary repair of spinal cord injury complicated with lacunar soft tissue defects.Methods:A retrospective cohort study was conducted to analyze the clinical data of 30 patients with spinal cord injury complicated with lacunar soft tissue defects. The patients were admitted to West China Hospital, Sichuan University from January 2020 to December 2022, including 20 males and 10 females; aged 23-54 years [(42.1±7.8)years]. Wound site was located at the sacrococcygeal region in 16 patients, the buttock in 11, and the femoral trochanter in 3. Wound area was 28-36 cm 2 [(32.1±2.1)cm 2]. Time of wound formation was at range of 1-4 months [(2.0±0.8)months]. Among them, 15 patients received functional dressing treatment after mechanical/ultrasonic debridement (dressing treatment group), and 15 patients received NPWT treatment on the basis of mechanical/ultrasonic debridement (negative pressure treatment group). The following items were compared between the two groups: the time of primary wound repair, results of bacterial culture of wound secretions before and at the end of primary wound repair, and levels of serum interleukin-6 (IL-6) and C-reactive protein (CRP) as well as Bates-Jensen wound assessment tool (BWAT) score before, at 5 days after the primary repair and at the end of the primary repair. Results:All the patients were followed up for 3-6 months [(4.1±0.9)months]. The time of primary wound repair in the negative pressure treatment group was (13.4±2.3)days, which was markedly shorter than that in the dressing treatment group [(22.8±2.5)days] ( P<0.01). Before the primary repair, 11 patients in the negative pressure treatment group showed positive bacterial culture of wound secretions [73.3% (11/15)], and 9 patients in the dressing treatment group were positive [60.0% (9/15)] ( P>0.05). At the end of primary repair, there was 1 patient with positive bacterial culture of wound secretions in the negative pressure treatment group [6.7% (1/15)], which was less than 7 patients in the dressing treatment group [46.7% (7/15)] ( P<0.05). The numbers of positive patients at the end of the primary repair were lower than those before the primary repair in both groups, and the difference in the negative pressure treatment group was statistically significant ( P<0.01), with no significant difference found in the dressing treatment group ( P>0.05). Before the primary repair, the IL-6, CRP and BWAT score were 20.5(8.4, 32.3)pg/ml, 24.2(14.7, 33.0)mg/L, and (37.1±4.8)points in the negative pressure treatment group, comparable with 13.8(11.8, 35.4)pg/ml, 23.6(13.1, 52.3)mg/L, and (35.2±4.7)points in the dressing treatment group (all P>0.05). At 5 days after primary repair, the IL-6, CRP and BWAT score in the negative pressure treatment group were 20.2(7.9, 28.6)pg/ml, 20.0(11.6, 30.5)mg/L, and (34.9±4.3)points, comparable with 11.6(8.9, 20.6)pg/ml, 25.3(10.0, 50.3)mg/L, and (35.2±4.5)points in the dressing treatment group (all P>0.05). At the end of primary repair, the IL-6, CRP and BWAT score were 2.3(1.5, 4.5)pg/ml, 4.8(3.7, 6.9)mg/L, and (23.6±1.8)points in the negative pressure treatment group, statistically different from 4.4(3.3, 6.9)pg/ml, 8.4(5.5, 31.4)mg/L, and (31.4±3.3)points in the dressing treatment group (all P<0.01). The IL-6, CRP and BWAT score at the end of the primary repair were significantly different compared with those before and at 5 days after the primary repair in the two groups ( P<0.05 or 0.01). However, no significant difference was found between the two groups before and at 5 days after the primary repair (all P>0.05). Conclusion:Compared with functional dressings, NPWT can shorten the time required for primary repair of spinal cord injury complicated with lacunar soft tissue defects, control the inflammatory state of the wound, improve the trend of wound healing, and create a good condition for secondary repair treatment of the wound.

Sponge forceps assisted threading with Speedbridge technique for the treatment of acute closed Achilles tendon rupture / 中华创伤杂志

Objective:To explore the outcome of sponge forceps assisted threading with Speedbridge technique for the treatment of acute closed Achilles tendon rupture.Methods:A retrospective case series study was conducted on 20 patients with acute closed Achilles tendon rupture treated in Zhengzhou Orthopedic Hospital from December 2019 to December 2021. There were 18 males and 2 females, with age range of 24-43 years [(29.5±7.6)years]. All patients were with unilateral injury, involving the left side in 13 patients and right side in 7. Examinations revealed a palpable defect in the Achilles tendon and positive Thompson test. A longitudinal incision was made at the medial edge of the ruptured tendon. Three nonabsorbable sutures were passed through the proximal stump with sponge forceps, bypassed the rupture site and fixed directly into the calcaneal bone. The disrupted tendon ends were aligned by the tendon-bundle technique using 4-0 absorbable sutures. The operation time and incision length were documented. The ankle joint range of motion (dorsiflexion/plantar flexion), American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score and Achilles tendon total rupture score (ATRS) in the affected and healthy side were compared at 3, 6 and 12 months postoperatively. The wound healing and complications were observed.Results:All patients were followed up for 12-16 months [(13.2±2.5)months]. The operation time was 40-66 minutes [(52.0±10.3)minutes], with the incision length of 3-4 cm [(3.3±0.7)cm]. In the affected side at 3 and 6 months postoperatively, the ankle joint dorsiflexion [(5.6±1.5)°, (10.5±0.2)°] and plantar flexion [(28.4±3.2)°, (33.5±1.5)°] showed statistically significant difference compared with the healthy side (all P<0.05). The ankle joint dorsiflexion [(13.9±0.7)°] and plantar flexion [(38.3±4.4)°] in the affected side were not statistically different from that of the healthy side at 12 months postoperatively (all P>0.05). The AOFAS ankle-hindfoot score was (58.3±5.4)points, (84.9±7.1)points and (91.8±6.3)points at 3, 6 and 12 months postoperatively, showing a gradual rise (all P<0.05). The ATRS was (60.5±4.9)points, (85.5±9.0)points and (93.1±5.7)points at 3, 6 and 12 months postoperatively, showing a gradual rise (all P<0.05). All incisions were healed primarily. No patients had wound infection, nerve injury or re-rupture. Pain at the anchor insertion site occurred in 2 patients at 1 month after operation and relieved after active functional rehabilitation at 4 months after operation. Transient pain at the Achilles tendon insertion occurred in 1 patient at 6 months after operation, and relieved after 2 weeks of oral non-steroidal anti-inflammatory drugs treatment. Conclusion:For acute closed Achilles tendon rupture, sponge forceps assisted threading with Speedbridge technique can attain short operation time, small incision and good functional recovery, with few complications.

Comparison of efficacy of modified single-incision and traditional double-incision for flexor hallucis longus tendon transfer in the treatment of Myerson type III chronic Achilles tendon ruptures in the middle-aged and elderly patients / 中华创伤杂志

Objective:To compare the efficacy of modified single-incision and traditional double-incision for flexor hallucis longus tendon transfer in the treatment of Myerson type III chronic Achilles tendon ruptures in the middle-aged and elderly patients.Methods:A retrospective cohort study was conducted to analyze the clinical data of 106 patients with Myerson type III chronic Achilles tendon ruptures admitted to Ningbo No.6 Hospital from January 2015 to May 2021, including 54 males and 52 females; aged 48-82 years [(67.2±8.4)years]. Flexor hallucis longus tendon transfer was assigned to 60 patients using modified single-incision (modified single-incision group) and to 46 patients using traditional double-incision (traditional double-incision group). The operation time, intraoperative blood loss as well as American foot and ankle society (AOFAS) ankle-hindfoot score, foot and ankle outcome score (FAOS), visual analogue score (VAS) before operation, at postoperative 12 months and at the last follow-up were compared between the two groups. Time to recover walking and self-care ability, and incidence of complications were compared as well.Results:All patients were followed up for 16-52 months [(37.4±9.5)months]. The operation time and intraoperative blood loss were (51.6±7.4)minutes and (16.6±3.9)ml in modified single-incision group compared to (72.8±7.5)minutes and (32.9±5.2)ml in traditional double-incision group (all P<0.01). There was no significant difference in the AOFAS ankle-hindfoot score, FAOS and VAS between the two groups before operation (all P>0.05). At postoperative 12 months and at the last follow-up, AOFAS ankle-hindfoot score and VAS were not significantly different between the two groups (all P>0.05), but FAOS in modified single-incision group [(112.6±3.0)points, (114.4±3.1)points] was improved significantly compared with traditional double-incision group [(110.8±4.1)points, (112.7±4.3)points] ( P<0.05 or 0.01). At postoperative 12 months and at the last follow-up, the AOFAS ankle-hindfoot score, FAOS and VAS in both groups were improved or decreased significantly compared with those before operation (all P<0.05). All patients recovered their pre-injury daily activities. The time to recover walking and self-care ability were (9.6±2.0)weeks and (12.7±1.7)weeks in modified single-incision group compared to (10.8±1.8)weeks and (13.7±1.9)weeks in traditional double-incision group (all P<0.01). In modified single-incision group, superficial incision infection ( n=1) was found and cured after oral antibiotics. In traditional double-incision group, superficial incision infection ( n=2), deep incision infection ( n=1), deep venous thrombosis ( n=1) and medial plantar nerve injury ( n=1) were found and cured after symptomatic internal medical therapy; claw toe deformity ( n=2) was found and relieved after wearing customized insoles and functional exercise. The incidence of complications was 1.7% (1/60) in modified single-incision group compared to 15.2% (7/46) in traditional double-incision group ( P<0.01). Conclusion:In contrast with traditional double-incision surgery, modified single-incision for flexor longus tendon transfer in the treatment of Myerson type III chronic Achilles tendon ruptures in the middle-aged and elderly patients has advantages such as shorter operation time, less intraoperative blood loss, better functional recovery, faster postoperative recovery and less complications.

Efficacy of medial plantar flap combined with medial foot flap for repairing weight-bearing area defects of the foot / 中华创伤杂志

Objective:To investigate the clinical effect of combining medial plantar flap with medial foot flap for repairing weight-bearing area defects of the foot.Methods:A retrospective case series study was used to analyze the clinical data of 12 patients with weight-bearing area defects of the foot, who were admitted to the Affiliated Hospital of Zunyi Medical University from March 2020 to March 2022. There were 9 males and 3 females, with the age of 27-62 years [(39.3±8.7)years]. There were 4 patients with palm defects and 8 with heel defects. The defect area ranged from 10 cm×8 cm to 13 cm×12 cm. The cutting area of skin flap ranged from 11 cm×8 cm to 14 cm×13 cm. A total of 5 patients were treated with free flaps (4 patients with palm and 1 with heel defects) and 7 with pedicled flaps (all with heel defects). The flap donor areas were repaired with skin grafting. The flap survival was observed after surgery. At the last follow-up, the appearance, texture, and two point discrimination of the flap were recorded; the foot function was evaluated by Maryland foot function score; the sensory function of the reconstructed skin flap was evaluated by testing the two-point discrimination using a bipedal gauge.Results:The patients were followed up for 6-24 months [(11.8±5.3)months], and all the flaps survived. At the last follow-up, the flaps were free of any swelling and ulceration, with good texture and no sliding. The Maryland foot function score was (92.8±7.2)points at the last follow-up, which was significantly higher than the preoperative (36.6±6.1)points ( P<0.01), being excellent in 9 patients and good in 3. The two-point discrimination of the reconstructed flap was (17.8±5.7)mm at the last follow-up, and there was no significant difference compared with the contralateral (16.3±5.1)mm ( P>0.05). The sensation of the flap returned to normal. There were residual scars in the flap donor area after skin grafting, but no significant impact on foot movement. Conclusion:The medial plantar flap combined with medial foot flap has a large cutting area and good texture, meets the functional requirements, and achieves good postoperative sense recovery, making it a good choice for the repair of weight-bearing area defects of the foot.

Application of artificial intelligence based on neural network radiation field in repair of soft tissue defects at lower limbs / 中华创伤骨科杂志

Objective:To investigate the application of artificial intelligence based on the neural network radiation field in repair of soft tissue defects at lower limbs.Methods:A retrospective analysis was performed of the 23 patients who had been admitted to Department of Orthopedic Surgery, Renmin Hospital of Wuhan University from June 2020 to May 2022 for soft tissue defects at lower limbs. There were 14 males and 9 females, aged (38.6±6.7) years. Causes for soft tissue defects: traffic injury in 9 cases, benign or malignant primary soft tissue tumor in 6 cases, mechanical injury in 4 cases, crush injury in 2 cases, and chronic ulcer in 2 cases. Defect locations: the thigh in 3 cases, the lower leg in 7 cases, and the ankle and distal foot in 13 cases. The areas of soft tissue defect ranged from 6.0 cm×3.8 cm to 14.7 cm×12.8 cm. The defects were repaired and reconstructed by transplantation of an anterolateral femoral free flap in 7 cases and a pedicled flap in 16 cases with the assistance of artificial intelligence based on the neural network radiation field, a cutting-edge artificial intelligence algorithm that can quickly construct and process three-dimensional model images through volume rendering under the radiation field. The flap survival rate, aesthetic satisfaction before and after treatment, time for skin flap harvesting and transplantation, functional recovery of lower limbs and incidence of complications were recorded.Results:All the 23 patients were followed up for 32(28, 36) weeks. All the flaps were harvested smoothly and survived. The time for flap harvesting and transplantation was 65.8(50.0, 76.0) min. The aesthetic satisfaction scored (2.3±0.7) points before treatment and (8.4±1.6) points 4 weeks after treatment, showing a statistically significant difference ( P<0.05). The skin flaps healed well with no complications such as hematoma or infection in all but one patient who suffered from superficial necrosis at the distal skin flap due to venous crisis but healed with a scar. On average, the functional recovery of lower limbs scored 23.7(22.0, 25.0) points at 12 weeks after operation according to the Enneking evaluation system, and the functional recovery of lower limbs was 79% (23.7/30.0). Conclusion:Application of artificial intelligence based on the neural network radiation field can achieve ideal results in repair of soft tissue defects at lower limbs, due to its advantages of rapid and accurate surgical procedures, limited damage to the donor site, and a short learning curve.

Precise flap surgery for reconstruction of knee defects / 中华创伤骨科杂志

Objective:To introduce the concept and procedures of precise flap surgery in construction of knee defects and to report the preliminary clinical outcomes.Methods:The data of 16 patients with knee defects at 17 sides were retrospectively analyzed who had been treated under the guidance of the concept of precise flap surgery at Department of Orthopedic Surgery, The 920th Hospital of Joint Logistic Support Force of PLA from August 2014 to March 2022. There were 12 males and 4 females, aged 44(34, 54) years. The wounds were at the left side in 8 cases, at the right side in 7 ones and at bilateral sides in one, and their sizes ranged from 5 cm×3 cm to 15 cm×11 cm. The time from injury to surgery was 8.5(6.0, 13.0) days. Optimal repair protocols were chosen after the donor and recipient sites were evaluated according to the methods of precise flap surgery: a retrograde anterolateral thigh flap in 7 sides, a descending genicular artery perforator flap in 3 ones, a saphenous artery flap in 2 ones, and a superior genicular lateral artery perforator flap, a popliteal artery perforator flap, a medial sural perforator propeller flap, a peroneal artery perforator propeller flap, and a randomized flap in one, respectively. The flap sizes ranged from 10 cm×6 cm to 15 cm×15 cm. The outcomes and complications of skin flap repair, and functional recovery of the affected limb were recorded.Results:All the flaps at 17 sides survived after surgery; 3 cases developed distal edge necrosis which responded to dressing change. The follow-ups for the 16 patients were 14.5(10.0, 28.0) months. All the flaps presented with good color, texture and contour. Flap bulking, local osteomyelitis, and scar ulcer was found in one case respectively. According to the revascularization assessments in the digital replantation criteria by Hand Surgery Society, Chinese Medical Association, all the flaps at 17 sides were excellent. Accoding to the knee functional evaluation of Hospital for Special Surgery (HSS) at the last follow-up, the 17 affected limbs scored 86(80,91) points, yielding 9 excellent, 7 good and 1 fair sides.Conclusion:Although the defects and donor sites around the knee vary greatly, precise flap surgery may lead to effective control of the variations, choice of an optimal reconstruction protocol, and precise wound repair.

Repair of extremity soft tissue defects using anterolateral femoral flaps with versus without anastomosis of anterolateral femoral cutaneous nerve / 中华创伤骨科杂志

Objective:To analyze the necessity of anastomosis of the cutaneous nerve by comparing anterolateral femoral flaps with versus without anastomosis of the anterolateral femoral cutaneous nerve in the repair of extremity soft tissue defects.Methods:A retrospective analysis was made of the clinical data of 30 patients with extremity soft tissue defects who had been admitted to Department of Orthopedics, The Sixth People＇s Hospital affiliated to Shanghai Jiaotong University School of Medicine from September 2019 to March 2022. The patients were assigned into 2 groups according to whether the anterolateral femoral cutaneous nerve was anastomosed or not in the repair of extremity soft tissue defects using anterolateral femoral flaps. In the anastomosis groups of 14 cases, there were 7 males and 7 females, with an age of (46.4±15.2) years and a flap size of (22.4±7.3) cm×(8.5±1.3) cm. In the non-anastomosis group of 16 cases, there were 11 males and 5 females, with an age of (39.9±15.8) years and a flap size of (23.0±6.4) cm×(9.0±2.1) cm. The 2 groups were compared in terms of flap survival, Semmes-Weinstein recovery degree and area of monofilament tactile sensation, and time periods for temperature sensation and two-point discrimination.Results:There was no statistically significant difference between the 2 groups in the preoperative general data, showing they were comparable ( P>0.05). All the flaps survived completely without vascular crisis. In the anastomosis group, the time periods required for Semmes-Weinstein recovery of monofilament tactile sensation to the areas of 20.0%, 50.0%, and 80.0% [(2.5±0.7) months, (6.7±1.1) months, and (11.0±1.2) months] were significantly shorter than those in the non-anastomosis group [(3.6±1.3) months, (8.6±1.4) months, and (15.0±2.2) months], the recovery area at the last follow-up [100.0% (100.0%, 100.0%)] was significantly larger than that in the non-anastomosis group [84.6% (81.7%, 89.9%)], and the time period for recovery of temperature sensation [(3.9±0.7) months] significantly shorter than that in the non-anastomosis group [(6.1±1.1) months] (all P<0.05). The time for recovery of two-point discrimination in the 14 patients in the anastomosis group was (10.4±1.7) months while only 7 of the 16 patients in the non-anastomosis group recovered two-point discrimination after (14.7±1.4) months, showing a significant difference between the 2 groups ( P<0.05). Conclusion:In the repair of extremity soft tissue defects using anterolateral femoral flaps, compared with no anastomosis of the cutaneous nerve, anastomosis of the anterolateral femoral cutaneous nerve may ensure more or less the sensory recovery of the flaps.

Review on the origin of knee valgus deformity / 中华骨科杂志

The sources of common knee valgus deformities were classified in order to better plan the orthopedic methods, matching prostheses and soft tissue repair of knee valgus deformities.Based on the analysis of typical clinical cases and the operability of classification standards in practical clinical practice, it is of great significance to establish a reasonable morphological classification of knee valgus deformity, in order to grasp the characteristics and patterns of the onset of valgus deformity. According to the origin of the deformity and the tension of the medial and lateral collateral ligaments, the classification of the genu valgus deformity can be divided into the classification of the traditional Genu valgum deformity origin and the classification of the new Genu valgum deformity origin. Although both of them highlight the skeletal characteristics and soft tissue conditions of the valgus deformity, they are quite different. Traditional classification is based on femoral tibial angle, valgus angle, etc; The new classification is divided into mechanical angle, anatomical angle, distal condylar angle, etc. The origin of Genu valgum deformity is generally complex. The traditional classification cannot fully reflect the origin of valgus deformity and the tension state of soft tissue. The new classification, especially based on the classification of anatomical angle valgus deformity, can not only reflect the morphological and anatomical details of knee valgus deformity, but also reflect the tension state of the medial and lateral collateral ligaments and local soft tissue stress state that determine the stability of the knee joint. At present, the commonly used surgical methods for valgus deformity of the knee include periarticular osteotomy of the knee and total knee Joint replacement. The former focuses on correcting extraarticular deformity without over repairing ligaments, and the latter focuses on force line correction, which is the final treatment for terminal valgus deformity. The application of digital technology in clinical orthopedics can improve the accuracy of implant placement. Implant placement needs to be based on the patient's bone characteristics and degree of deformity. For patients with severe deformity, the application of digital technology can improve the accuracy of implant placement and assist in the treatment of knee valgus deformity.

Clinical methods for diagnosing muscular disorders during long periods of basketball practice / Métodos clínicos para diagnóstico de distúrbios musculares durante longos períodos de prática do basquetebol / Métodos clínicos para el diagnóstico de trastornos musculares durante largos períodos de práctica del baloncesto

ABSTRACT Introduction There are many drawbacks in sports, one of the main problems being injuries. Objective This work aimed to study the effect of prolonged basketball practice and associated sports injuries on electrophysiological indicators about the functional state of the neuromuscular apparatus in specialized athletes. Methods A study was conducted in which 14 basketball players participated voluntarily: 7 basketball players aged 17 to 23 years with first category sports qualifications, relatively healthy, with a history of knee and ankle injuries, and seven non-athletes with no history of injuries. Psychophysiological and electrophysiological methods were used for the study, designed to diagnose strength and endurance, measure rhythmic dynamics in hand movements, evaluate the mobility of neural processes, and the functional state of the central nervous system and processes in the central nervous system. Results It was established that regular sports training leads to morphological and functional changes in the neuromuscular system. Conclusion Due to repeated injuries, basketball players experience a decrease in the conduction velocity of the electrical pulse in the neural fiber pathway and in the level of reflex excitability in the neuronal motor ensemble of the lumbosacral segments of the spinal cord that innervate the bilateral muscles of the lower limbs; a weakening of the nervous system resistance, mobility of the nervous processes, deterioration of the functional state of the central nervous system and analyzers was noted. Evidence level II; Therapeutic studies - outcomes research.

RESUMO Introdução Há muitos inconvenientes no esporte, sendo um dos principais problemas as lesões. Objetivo O objetivo deste trabalho foi estudar o efeito da prática prolongada do basquetebol e as lesões esportivas associadas sobre os indicadores eletrofisiológicos sobre o estado funcional do aparelho neuromuscular em atletas especializados. Métodos Foi realizado um estudo no qual 14 jogadores de basquetebol participaram voluntariamente: 7 jogadores de basquete de 17 a 23 anos com qualificações esportivas da primeira categoria, relativamente saudáveis, com histórico de lesões no joelho e tornozelo; e 7 não-atletas sem histórico de lesões. Métodos psicofisiológicos e eletrofisiológicos foram utilizados para o estudo, que foram desenvolvidos para diagnosticar a força e resistência, mensurando a dinâmica rítmica nos movimentos das mãos, avaliando a mobilidade dos processos neurais, assim como o estado funcional do sistema nervoso central e os processos nervosos no sistema nervoso central. Resultados Foi estabelecido que o treinamento esportivo regular leva a mudanças morfológicas e funcionais no sistema neuromuscular. Conclusão Devido as repetidas lesões, os jogadores de basquetebol experimentam uma diminuição da velocidade de condução do pulso elétrico no trajeto das fibras neurais e do nível de excitabilidade reflexa no conjunto neuronal motor dos segmentos lombossacrais da medula espinhal que inervam os músculos bilaterais dos membros inferiores. Além disso, notou-se um enfraquecimento da resistência do sistema nervoso, mobilidade dos processos nervosos, deterioração do estado funcional do sistema nervoso central e dos analisadores. Evidência nível II; Estudos terapêuticos - pesquisa de resultados.

RESUMEN Introducción Existen muchos inconvenientes en el deporte, siendo uno de los principales problemas las lesiones. Objetivo El objetivo de este trabajo fue estudiar el efecto de la práctica prolongada del baloncesto y las lesiones deportivas asociadas sobre los indicadores electrofisiológicos del estado funcional del aparato neuromuscular en atletas especializados. Métodos Se realizó un estudio en el que participaron voluntariamente 14 jugadores de baloncesto: 7 jugadores de baloncesto de entre 17 y 23 años con titulación deportiva de primera categoría, relativamente sanos, con antecedentes de lesiones de rodilla y tobillo; y 7 no deportistas sin antecedentes de lesiones. Para el estudio se utilizaron métodos psicofisiológicos y electrofisiológicos, destinados a diagnosticar la fuerza y la resistencia, midiendo la dinámica rítmica en los movimientos de la mano, evaluando la movilidad de los procesos neurales, así como el estado funcional del sistema nervioso central y los procesos nerviosos en el sistema nervioso central. Resultados Se estableció que el entrenamiento deportivo regular produce cambios morfológicos y funcionales en el sistema neuromuscular. Conclusión Debido a las lesiones repetidas, los jugadores de baloncesto experimentan una disminución de la velocidad de conducción del impulso eléctrico en el trayecto de las fibras neuronales y del nivel de excitabilidad refleja en el conjunto neuronal motor de los segmentos lumbosacros de la médula espinal que inervan los músculos bilaterales de las extremidades inferiores. Además, se observó un debilitamiento de la resistencia del sistema nervioso, la movilidad de los procesos nerviosos, el deterioro del estado funcional del sistema nervioso central y de los analizadores. Nivel de evidencia II; Estudios terapéuticos - investigación de resultados.

Impacts of quercetin supplementation post-exercise / Impactos da suplementação de quercetina pós-exercício / Impactos de la suplementación de quercetina después del ejercicio

ABSTRACT Introduction: Quercetin (Q) is a flavonoid that has been shown to be an antioxidant in vitro. A current review is necessary to evaluate whether Q can improve biochemical damage markers following exercise-induced muscle damage (EIMD) and delayed onset muscle soreness (DOMS). Objective: Specify the impact of Q supplementation on EIMD, DOMS, and inflammatory cytokines (IL-6, IL-10, and TNF-α) after exercise. Methods: Participants (n=28) were randomly assigned to Q (1000 mg/day) and placebo (PLA). Intake was done 48 hours before EMID to 96 hours after EMID (one week). Before EIMD (PRE) and 24, 48, 72, and 96 hours after EIMD, blood samples were collected for CK and measurement of inflammatory cytokines. ANOVA test was used for data analysis with a significance P > 0.05. Results: Peak DOMS was seen 48 hours after EIMD, regardless of the DOMS combination. Q had a significant reducing effect on CK response at 24 hours (-43%), 48 hours (-48%), 72 hours (-56%), and 96 hours (-67%) after EIMD compared to placebo. IL-10 and IL-6 did not change statistically for the applied sample size. TNF-α was lower by Q intake significantly at 24 hours (-24%), 48 hours (-22%), and 96 hours (-22%) compared to PLA. Furthermore, the TNF-α trend was lower with Q intake at 72 hours (-19%). Conclusion: Q supplementation decreased biological inflammation during post-IMD recovery but not quadriceps DOMS. Level of Evidence: Therapeutic Studies - Investigating Treatment Outcomes.

RESUMO Introdução: A quercetina (Q) é um flavonóide que provou ser um antioxidante in vitro. Fez-se necessária uma revisão atual projetada para avaliar se a Q pode melhorar os marcadores bioquímicos de dano após o dano muscular induzido pelo exercício (EIMD) e a dor muscular de início retardado (DOMS). Objetivo: O objetivo da revisão atual foi especificar o impacto da suplementação Q sobre EIMD, DOMS e citocinas inflamatórias (IL-6, IL-10 e TNF-α) após o exercício. Métodos: Os participantes (n=28) foram alocados em Q (1000 mg/dia) e placebo (PLA) aleatoriamente. Fez-se ingestão 48 horas antes da EMID a 96 horas após a EMID (uma semana). Antes da EIMD (PRE) e 24, 48, 72 e 96 horas após a EIMD, amostras de sangue coletadas para CK e medição de citocinas inflamatórias. O teste ANOVA foi usado para análise de dados com significância P > 0,05. Resultados: O pico DOMS foi visto em 48 horas após EIMD, independentemente da combinação de DOMS. Q teve um efeito de redução significativo na resposta CK em 24 horas (-43%), 48 horas (-48%), 72 horas (-56%) e 96 horas (-67%) após a EIMD em comparação com placebo. IL-10 e IL-6 não mudaram estatisticamente para o tamanho da amostra aplicada. TNF-α foi menor pela ingestão de Q significativamente às 24 horas (-24%), 48 horas (-22%), e 96 horas (-22%) em comparação com o PLA. Ademais, a tendência TNF-α foi menor com a ingestão de Q às 72 horas (-19%). Conclusão: A suplementação de Q diminuiu a inflamação biológica durante a recuperação pós EIMD, porém não os DOMS do quadríceps. Nível de evidência: Estudos Terapêuticos - Investigando os Resultados de tratamento.

RESUMEN Introducción: La quercetina (Q) es un flavonoide que ha demostrado ser un antioxidante in vitro. Por ello, es necesaria una revisión actual diseñada para evaluar si la Q puede mejorar los marcadores bioquímicos de daño tras el daño muscular inducido por el ejercicio (EIMD) y el dolor muscular de aparición retardada (DOMS). Objetivo: El objetivo de la presente revisión fue especificar el impacto de la suplementación con Q en el EIMD, el DOMS y las citoquinas inflamatorias (IL-6, IL-10 y TNF-α) después del ejercicio. Métodos: Los participantes (n=28) fueron asignados aleatoriamente a Q (1000 mg/día) y a placebo (PLA). La ingesta se realizó desde 48 horas antes de la EMID hasta 96 horas después de la misma (una semana). Antes de la EMID (PRE) y 24, 48, 72 y 96 horas después de la EMID, se tomaron muestras de sangre para la CK y la medición de citoquinas inflamatorias. Se utilizó la prueba ANOVA para el análisis de los datos con una significancia P > 0,05. Resultados: El pico de DOMS se observó en las 48 horas posteriores a la EIMD, independientemente de la combinación de DOMS. Q tuvo un efecto significativamente reductor en la respuesta de la CK a las 24 horas (-43%), 48 horas (-48%), 72 horas (-56%) y 96 horas (-67%) después de la EIMD en comparación con el placebo. La IL-10 y la IL-6 no cambiaron estadísticamente para el tamaño de muestra aplicado. El TNF-α se redujo significativamente con la ingesta de Q a las 24 horas (-24%), a las 48 horas (-22%) y a las 96 horas (-22%) en comparación con el PLA. Además, la tendencia del TNF-α fue menor con la ingesta de Q a las 72 horas (-19%). Conclusión: La suplementación con Q disminuyó la inflamación biológica durante la recuperación después de un IMD, pero no el DOMS del cuádriceps. Nivel de evidencia: Estudios terapéuticos -Investigación de los resultados del tratamiento.

Cherry extract on post-exercise muscle damage / Extrato de cereja em danos musculares pós-exercício / El extracto de cereza daños musculares post ejercicio

ABSTRACT Introduction: Cherry extract has a high amount of anthocyanins and flavonoids containing antioxidant effects. Its high antioxidant characteristics have been shown to reduce markers of delayed muscle soreness (DOMS) and exercise-induced muscle damage (EIMD) to improve recovery after exercise. Objective: Verify the effects of the cherry extract on post-exercise muscle damage. Methods: Google scholar, Medline, and Scopus were systematically searched until February 2022. The Cochrane Collaboration tool was applied to determine the risks of bias. Results: The results showed that cherry extract administration did not have a decreasing impact on creatine kinase levels overall: (WMD = 12.85 IU. L-1, 95% CI: −35.94, 61.64; P = 0.606). Considerable heterogeneity was observed among the articles (Cochran's Q-test = 990.80, P = 0.000, I2 = 96.7 %). However, there is a significant reducing effect on pain sensation by the consumption of cherry extract (WMD = −6.105 mm; 95% CI: −11.193 −1.017; p = 0.019). Conclusion: Cherry extract consumption effectively reduced late-onset muscle pain among participants in the overall and subgroup analysis. Thus, the cherry extract may be a complementary alternative in recovery after exercise. Level of evidence II; Therapeutic studies - Manuscript review.

RESUMO Introdução: O extrato de cereja tem uma alta quantidade de antocianinas e flavonóides contendo efeitos antioxidantes. Suas altas características antioxidantes demonstraram reduzir os marcadores de dor muscular retardada (DOMS) e dano muscular induzido pelo exercício (EIMD) para melhorar a recuperação após o exercício. Objetivo: Verificar os efeitos do extrato de cereja nos danos musculares pós-exercício. Métodos: Google scholar, Medline e Scopus foram sistematicamente pesquisados até fevereiro de 2022. A ferramenta de colaboração da Cochrane foi aplicada para determinar os riscos de viés. Resultados: Os resultados mostraram que a administração do extrato de cereja não teve um impacto decrescente nos níveis de creatina quinase em geral: (WMD = 12,85 IU. L-1, 95% CI: −35,94, 61,64; P = 0,606). Uma heterogeneidade considerável foi observada entre os artigos (teste Q da Cochran = 990,80, P = 0,000, I2 = 96,7 %). Porém, há um efeito redutor significativo na sensação de dor pelo consumo de extrato de cereja (WMD = −6,105 mm; 95% CI: −11,193 −1,017; p = 0,019). Conclusão: O consumo de extrato de cereja foi efetivo na redução de dores musculares de início tardio entre os participantes, na análise geral e nos subgrupos. Assim, o extrato de cereja pode ser uma alternativa complementar na recuperação após os exercícios. Nível de evidência II; Estudos terapêuticos - Revisão de manuscritos.

RESUMEN Introducción: El extracto de cereza tiene una gran cantidad de antocianinas y flavonoides con efectos antioxidantes. Se ha demostrado que sus altas características antioxidantes reducen los marcadores de dolor muscular retardado (DOMS) y el daño muscular inducido por el ejercicio (EIMD) para mejorar la recuperación después del ejercicio. Objetivo: Verificar los efectos del extracto de cereza en el daño muscular posterior al ejercicio. Métodos: Se realizaron búsquedas sistemáticas en Google scholar, Medline y Scopus hasta febrero de 2022. Se aplicó la herramienta de colaboración Cochrane para determinar los riesgos de sesgo. Resultados: Los resultados mostraron que la administración de extracto de cereza no tuvo un impacto decreciente en los niveles de creatina quinasa en general: (WMD = 12,85 UI. L-1, IC del 95%: −35,94, 61,64; P = 0,606). Se observó una considerable heterogeneidad entre los artículos (prueba Q de Cochran = 990,80, P = 0,000, I2 = 96,7 %). Sin embargo, el consumo de extracto de cereza tiene un efecto significativo de reducción del dolor (WMD = −6,105 mm; IC del 95%: −11,193 −1,017; p = 0,019). Conclusión: El consumo de extracto de cereza fue eficaz para reducir el dolor muscular de aparición tardía entre los participantes en el análisis global y de subgrupos. Así, el extracto de cereza puede ser una alternativa complementaria en la recuperación después de los ejercicios. Nivel de evidencia II; Estudios terapéuticos - Revisión de manuscritos.

Creatine supplementation for post-exercise muscle damage / Suplementação com creatina para danos musculares pós-exercício / Suplementación con creatina para daños musculares después del ejercicio

ABSTRACT Introduction: Exercise-induced muscle damage (EIMD) can occur from recent or unusual physical activity, leading to a temporary reduction in muscle function. And increased pain. Several articles indicate the positive impacts of creatine on EIMD. Objective: Evaluate the impact of creatine on EIMD. Methods: Online searches were performed in Scopus, Embase, Medline and Google scholar until March 2022. Results: Thirteen studies met the inclusion criteria. To assess the quality of the studies, the Cochrane collaboration system was used for risk and bias analysis. Due to the high heterogeneity of interventions and studies designed, a meta-analysis was not performed. The current paper reveals that creatine intake is preferable to inactive recovery and only a rest period between several harmful and exhausting physical activities. Conclusion: Benefits were attenuated in EIMD markers that reduce muscle operation and muscle strength loss after exercise. Level of evidence II; Therapeutic studies - Manuscript review.

RESUMO Introdução: O dano muscular induzido pelo exercício (EIMD) pode acontecer por atividade física recente ou não habitual e leva a uma redução temporária da função muscular. e aumento da dor. Vários artigos indicam impactos positivos da creatina sobre a EIMD. Objetivo: Avaliar o impacto da creatina sobre a EIMD. Métodos: Foram feitas pesquisas eletrônicas em Scopus, Embase, Medline e Google scholar até março de 2022. Resultados: Treze estudos preencheram os critérios de inclusão. Para avaliar a qualidade dos estudos, o sistema de colaboração Cochrane foi utilizado na análise de risco e viés. Devido à alta heterogeneidade de intervenções e estudos desenhados, a meta-análise não foi realizada. As informações do documento atual revelam que a ingestão de creatina é preferível a uma recuperação inativa e apenas um período de repouso entre diversas atividades físicas prejudiciais e exaustivas. Conclusão: Os benefícios evidenciaram-se atenuados nos marcadores EIMD que reduzem a operação muscular e a perda de força muscular após os exercícios. Nível de evidência II; Estudos terapêuticos - Revisão de manuscritos.

RESUMEN Introducción: el daño muscular inducido por el ejercicio (EIMD) puede producirse por una actividad física reciente o inusual y provoca una reducción temporal de la función muscular y un aumento del dolor. Varios artículos indican impactos positivos de la creatina en la EIMD. Objetivo: Evaluar el impacto de la creatina en la EIMD. Métodos: Se realizaron búsquedas electrónicas en Scopus, Embase, Medline y Google scholar hasta marzo de 2022. Resultados: Trece estudios cumplieron los criterios de inclusión. Para evaluar la calidad de los estudios, se utilizó el sistema de colaboración Cochrane para el análisis de riesgos y sesgos. Debido a la gran heterogeneidad de las intervenciones y de los estudios diseñados, no se realizó un metanálisis. La información del presente documento revela que la ingesta de creatina es preferible a una recuperación inactiva y sólo un período de descanso entre varias actividades físicas perjudiciales y agotadoras. Conclusión: Los beneficios se mostraron atenuados en los marcadores EIMD que reducen el funcionamiento muscular y la pérdida de fuerza muscular después del ejercicio. Nivel de evidencia II; Estudios terapéuticos - Revisión de manuscritos.

Role of whey protein in post-workout recovery / Função da proteína de soro de leite na recuperação pós-treino / El papel de la proteína de suero de leche en la recuperación post-entrenamiento

ABSTRACT Introduction: Evidence indicates that whey protein supplementation may accelerate tissue repair and be useful for exercise-induced muscle injury (EIMD) by accelerating recovery and elevating protein synthesis and blood amino acids. However, the potential role of whey protein after EIMD in humans is inconsistent. Objective: Find the effective role of whey protein in post-exercise recovery from EIMD. Methods: Scopus, Medline, and Google scholar, were systematically searched until March 2022. To assess the risk of bias, the Cochrane collaboration tool was applied. Weighted mean differences (WMD), 95% confidence intervals (CI), and random effect models to calculate the total effect. Results: The result of the review indicated that the decreasing impact of whey protein intake is significant on creatine kinase (CK) [WMD = −19.11 IU.L-1, CI: −36.200, −2.036; P = 0.028]. The effect of whey protein supplementation on lactate dehydrogenase (LDH) concentration indicated that the impact of whey protein on changing LDH levels is significant. In addition, subgroup analysis showed significant decreases in CK and LDH based on post-exercise follow-up times, whey protein dosage, test duration, supplementation time, exercise types, and training status. Conclusion: The results showed the efficacy of whey protein in decreasing CK and LDH levels among adults in general and in subgroup analysis. Therefore, whey protein could have an effective role in the post-exercise recovery of EIMD. Level of evidence II; Therapeutic studies - review of results.

RESUMO Introdução: As evidências indicam que a suplementação de proteína de soro de leite pode acelerar a reparação tecidual e, portanto, ser útil para as lesões musculares induzidas pelo exercício (EIMD), acelerando a recuperação, além de elevar a síntese proteica e os aminoácidos sanguíneos. Entretanto, o papel potencial da proteína de soro de leite após a EIMD em humanos, é inconsistente. Objetivos: Encontrar a função efetiva da proteína de soro de leite na recuperação pós exercício de EIMD. Métodos: Scopus, Medline e Google scholar foram sistematicamente pesquisados até março de 2022. Para avaliar o risco de viés, foi aplicada a ferramenta de colaboração Cochrane. Diferenças médias ponderadas (WMD), intervalos de confiança de 95% (CI) e modelos de efeito aleatório foram utilizados para o cálculo do efeito total. Resultados: O resultado da revisão indicou que o impacto decrescente do consumo de proteína de soro de leite é significativo na creatina quinase (CK) [WMD = −19,11 IU.L-1, CI: −36,200, −2,036; P = 0,028]. O efeito da suplementação proteica do soro de leite na concentração de desidrogenase láctica (LDH) indicou que o impacto da proteína do soro de leite na mudança dos níveis de LDH é significativo. Além disso, a análise dos subgrupos mostrou diminuição significativa na CK e LDH, com base nos tempos de acompanhamento após o exercício, dosagem da proteína do soro de leite, duração dos testes, tempo de suplementação, tipos de exercício e status de treinamento. Conclusão: Os resultados mostraram a eficácia da proteína de soro de leite na diminuição dos níveis de CK e LDH entre adultos, em geral e na análise dos subgrupos. Portanto, a proteína do soro de leite poderia ter uma função eficaz na recuperação pós exercício de EIMD. Nível de evidência II; Estudos terapêuticos - revisão dos resultados.

RESUMEN Introducción: Las pruebas indican que la suplementación con proteína de suero de leche puede acelerar la reparación de los tejidos y, por lo tanto, ser útil para las lesiones musculares inducidas por el ejercicio (EIMD) al acelerar la recuperación, así como elevar la síntesis de proteínas y los aminoácidos en sangre. Sin embargo, el papel potencial de la proteína de suero después de la EIMD en los seres humanos, es inconsistente. Objetivos: Encontrar el papel efectivo de la proteína de suero de leche en la recuperación posterior al ejercicio de EIMD. Métodos: Se realizaron búsquedas sistemáticas en Scopus, Medline y Google scholar hasta marzo de 2022. Para evaluar el riesgo de sesgo, se aplicó la herramienta de colaboración Cochrane. Para calcular el efecto total se utilizaron diferencias medias ponderadas (WMD), intervalos de confianza (CI) del 95% y modelos de efectos aleatorios. Resultados: El resultado de la revisión indicó que el impacto decreciente de la ingesta de proteína de suero es significativo en la creatina quinasa (CK) [WMD = −19,11 UI.L-1, IC: −36,200, −2,036; P = 0,028]. El efecto de la suplementación con proteína de suero en la concentración de lactato deshidrogenasa (LDH) indicó que el impacto de la proteína de suero en el cambio de los niveles de LDH es significativo. Además, el análisis de subgrupos mostró disminuciones significativas de la CK y la LDH en función de los tiempos de seguimiento tras el ejercicio, la dosis de proteína de suero, la duración de la prueba, el tiempo de suplementación, los tipos de ejercicio y el estado de entrenamiento. Conclusión: Los resultados mostraron la eficacia de la proteína de suero en la disminución de los niveles de CK y LDH entre los adultos en general y en el análisis de subgrupos. Por lo tanto, la proteína de suero podría tener un papel eficaz en la recuperación posterior al ejercicio de EIMD. Nivel de evidencia II; Estudios terapéuticos - revisión de resultados.

Recovery from muscle injurie after high-intensity training in table tennis / Recuperação de lesão muscular após treinamento de alta intensidade na prática do tênis de mesa / Recuperación de lesión muscular tras un entrenamiento de alta intensidad en el tenis de mesa

ABSTRACT Introduction High-intensity training is an important point in table tennis training. Due to the high muscle load, occasional injuries may occur during the practice of this activity, requiring the intervention of dedicated physical rehabilitation. Objective Explore the rehabilitation process of muscle injuries caused by high-intensity training in table tennis athletes. Methods Thirty-one student table tennis athletes with indications for rehabilitation due to muscle injuries caused by high-intensity training were volunteers for this research. Data pertinent to the research were collected before and after the intervention. Muscle strength, tank test, lifting test, flexor and extensor group peak torque at 60°/s speed, and flexor and extensor group peak torque at 60°/s speed were analyzed, and data were stored and analyzed in statistical software. The results were analyzed and checked against the updated scientific literature. Results The research shows that a good recovery method can relieve muscle pain and reduce psychological problems caused by pain and speed up joint motion gain. Conclusion The protocol analyzed in this paper can improve the athletes' sporting level both from the physiological and psychological point of view, besides promoting faster recovery and being suitable for daily practical application. Level of evidence II; Therapeutic studies - investigation of treatment results.

RESUMO Introdução O treino de alta intensidade é um ponto importante no treinamento do tênis de mesa. Devido à alta carga muscular, podem ocorrer lesões ocasionais durante a prática dessa atividade, exigindo a intervenção de uma reabilitação física dedicada. Objetivo Explorar o processo de reabilitação nas lesões musculares provocadas pelo treinamento de alta intensidade em atletas do tênis de mesa. Métodos Foram voluntários dessa pesquisa 31 estudantes atletas do tênis de mesa com indicação para reabilitação devido a lesões musculares ocasionadas pelo treinamento de alta intensidade. Os dados pertinentes a pesquisa foram coletados antes e após a intervenção. Foi analisada a força muscular, teste de tanque, teste de levantamento, o torque de pico do grupo flexor e extensor à velocidade de 60°/s e o torque de pico do grupo flexor e extensor à velocidade de 60°/s, os dados foram armazenados e analisados em software estatístico. Os resultados foram analisados e confrontados à bibliografia científica atualizada. Resultados A pesquisa mostra que um bom método de recuperação pode não só aliviar a dor muscular e reduzir os problemas psicológicos causados pela dor, como também pode agilizar o ganho de movimento articular. Conclusão O protocolo analisado neste trabalho pode melhorar o nível esportivo dos atletas tanto do ponto de vista fisiológico quanto psicológico além de promover uma recuperação mais rápida, sendo apta na aplicação prática cotidiana. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción El entrenamiento de alta intensidad es un punto importante en el entrenamiento del tenis de mesa. Debido a la elevada carga muscular, pueden producirse lesiones ocasionales durante la práctica de esta actividad, que requieren la intervención de un rehabilitador físico especializado. Objetivo Explorar el proceso de rehabilitación en las lesiones musculares causadas por el entrenamiento de alta intensidad en atletas de tenis de mesa. Métodos 31 estudiantes atletas de tenis de mesa con indicación de rehabilitación debido a lesiones musculares causadas por el entrenamiento de alta intensidad fueron voluntarios de esta investigación. Los datos pertinentes para la investigación se recogieron antes y después de la intervención. Se analizó la fuerza muscular, la prueba del tanque, la prueba de elevación, el par máximo del grupo de flexores y extensores a una velocidad de 60°/s y el par máximo del grupo de flexores y extensores a una velocidad de 60°/s, los datos se almacenaron y analizaron en un software estadístico. Los resultados fueron analizados y contrastados con la literatura científica actualizada. Resultados La investigación demuestra que un buen método de recuperación no sólo puede aliviar el dolor muscular y reducir los problemas psicológicos causados por el dolor, sino que también puede acelerar la ganancia de movimiento de las articulaciones. Conclusión El protocolo analizado en este trabajo puede mejorar el nivel deportivo de los atletas tanto desde el punto de vista fisiológico como psicológico, además de promover una recuperación más rápida, siendo apto para su aplicación práctica diaria. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

Uso concomitante de sutura elástica associada ao curativo a vácuo no fechamento de grandes perdas de partes moles / Concomitant use of elastic suture associated with vacuum dressing in the closure of large soft tissue losses

O tratamento das feridas complexas com grande perda de partes moles é um desafio para a cirurgia plástica, principalmente quando a ferida encontra-se infectada. Várias opções são consideradas para o tratamento, como sutura, enxertos, retalhos, expansores. Devido à complexidade dos casos, frequente associação de morbidades, necessidade de intervenções multidisciplinar e longos internamentos, os custos do tratamento são frequentemente elevados. Este trabalho vem demonstrar a técnica de sutura elástica empregada em um caso clínico, utilizando tração contínua da pele em associação ao curativo a vácuo, que possibilitou reabilitação do paciente sem a necessidade de intervenções mais agressivas para o fechamento da ferida traumática extensa.

Treating complex wounds with great loss of soft tissues is a challenge for plastic surgery, especially when the wound is infected. Several options are considered for treatment, such as sutures, grafts, flaps, and expanders. Due to the complexity of the cases, the frequent association of morbidities, the need for multidisciplinary interventions, and long hospital stays, treatment costs are often high. This work demonstrates the elastic suture technique used in a clinical case, using continuous skin traction in association with a vacuum dressing, which enabled patient rehabilitation without the need for more aggressive interventions to close the extensive traumatic wound.

The assessment of periimplant soft tissue condition with morse taper abutment connection: a rapid review

Aim: This study aims to evaluate the clinical assessment results of periimplant soft tissue with morse taper (internal abutment connection). Methods: The study was conducted using a rapid review by searching the articles from PubMed NCBI and Cochrane by using keywords. All articles were selected by the year, duplication, title, abstract, full-text, and finally, all selected articles were processed for final review. Following clinical parameters were included; Periimplant Probing Pocket Depth (PPD), Plaque Score (PS), modified Plaque Index (mPI), Mucosal Thickness (MTh), Gingival Height (GH), periimplant mucosal zenith, Pink Esthetic Score (PES), Bleeding On Probing (BOP), Sulcus Bleeding Index (SBI), and modified Gingival Index (mGI). Results: 9 selected articles were obtained from the initial literature searching count of 70 articles. The overall samples included 326 morse taper implants. Based on the evaluation, 3 out of 4 articles reported pocket depth < 4 mm, no bleeding was reported in 2 out of 4 articles. 4 out of 4 articles reported low plaque accumulation, low soft tissue recession was reported in 3 out of 3 articles, and 4 out of 4 articles reported acceptable PES values. Conclusion: The evaluations indicate that the morse taper (internal abutment connection) has favorable assessment results based on various clinical parameters

Colgajos en la reconstrucción de los miembros con lesión traumática / Flaps In The Reconstruction Of Limbs With Traumatic Injury

Introducción: Las opciones para el manejo de tejidos blandos en los defectos traumáticos han aumentado con el desarrollo de la microcirugía, con una mejor comprensión de los colgajos pediculados y los avances con terapia con esponja de presión negativa. Objetivo: Revisar y poner a disposición de los especialistas algunos de los tópicos relacionados con estos procederes quirúrgicos de colgajos en las lesiones traumáticas de los miembros. Métodos: Se realiza una búsqueda en PubMed entre los años 2010-2020, en inglés con los términos: cirugía de colgajos en lesiones traumáticas, tratamiento de las lesiones de partes blandas relacionadas con trauma de los miembros, reconstrucción de las lesiones traumáticas de partes blandas de extremidades. Se revisaron también, artículos accesibles de forma libre, o a través del servicio Clinical Key y Hinari. Conclusiones: Existen controversias acerca del momento óptimo para el cierre de las heridas. La definición de reconstrucción primaria versus secundaria depende del tiempo de lesión y del tipo de procedimiento quirúrgico. La terapia de heridas con presión negativa sirve como parte del arsenal para la reconstrucción de tejidos blandos en un trauma de extremidades(AU)

Introduction: Options for soft tissue management of traumatic defects have increased with the development of microsurgery, with a better understanding of pedicle flaps and advances with negative pressure sponge therapy. Objective: To review and make available to specialists some of the topics related to these surgical procedures for flaps in traumatic limb injuries. Methods: A PubMed search was carried out from 2010 to 2020, in English with the terms: flap surgery in traumatic injuries, treatment of soft tissue injuries related to trauma of the limbs, reconstruction of the limbs. traumatic soft tissue injuries of extremities. Articles freely accessible or through the Clinical Key and Hinari service were also reviewed. Conclusions: There are controversies about the optimal time for wound closure. The definition of primary versus secondary reconstruction depends on the time of injury and the type of surgical procedure. Negative pressure wound therapy serves as part of the arsenal for soft tissue reconstruction in extremity trauma(AU)

Alternância de máscara nasal com pronga nasal reduz a incidência de lesão nasal moderada a grave em prematuros em uso de ventilação não invasiva / Rotating nasal masks with nasal prongs reduces the incidence of moderate to severe nasal injury in preterm infants supported by noninvasive ventilation

RESUMO Objetivo: Investigar a relação entre dispositivos de ventilação não invasiva e incidência de lesão do septo nasal em recém-nascidos pré-termo. Métodos: Este estudo de coorte retrospectivo e unicêntrico incluiu prematuros em uso de ventilação não invasiva. A incidência de lesão nasal foi comparada entre três grupos, de acordo com o dispositivo de ventilação não invasiva (G1 para máscara nasal; G2 para prongas binasais e G3 para alternância entre máscaras e prongas nasais). As lesões nasais foram classificadas de acordo com o National Pressure Ulcer Advisory Panel como estágios 1 - 4. Foram realizadas análises de regressão multivariada para estimar os riscos relativos, a fim de identificar possíveis preditores associados a lesões relacionadas a dispositivos médicos. Resultados: Entre os 300 lactentes incluídos no estudo, a incidência de lesões relacionadas a dispositivos médicos no grupo em uso alternado foi significativamente menor do que a nos grupos de máscara ou prongas de uso contínuo (n = 68; 40,48%; valor de p < 0,01). O grupo de prongas nasais apresentou mais lesões de estágio 2 (n = 15; 55,56%; p < 0,01). A permanência ≥ 7 dias em ventilação não invasiva foi associada a maior incidência de lesões relacionadas a dispositivos médicos, independentemente do dispositivo (63,81%; p < 0,01). Os incrementos diários na ventilação não invasiva aumentaram o risco de lesões nasais em 4% (IC95% 1,02 - 1,06; p < 0,01). Um maior peso ao nascer indicou proteção contra lesões relacionadas a dispositivos médicos. Cada grama extra representou diminuição de 1% no risco de desenvolver lesão do septo nasal (RR: 0,99; IC95% 0,99 - 0,99; p < 0,04). Conclusão: A alternância entre máscaras e prongas nasais reduz a incidência de lesão nasal moderada a grave em comparação com dispositivos únicos. O incremento de dias em uso de ventilação não invasiva parece contribuir para lesões relacionadas a dispositivos médicos, e um maior peso ao nascer é um fator de proteção.

ABSTRACT Objective: To investigate the association between noninvasive ventilation delivery devices and the incidence of nasal septum injury in preterm infants. Methods: This retrospective singlecenter cohort study included preterm infants supported by noninvasive ventilation. The incidence of nasal injury was compared among three groups according to the noninvasive ventilation delivery device (G1 - nasal mask; G2 - binasal prongs; and G3, rotation of nasal mask with prongs). Nasal injury was classified according to the National Pressure Ulcer Advisory Panel as stages 1 - 4. Multivariate regression analyses were performed to estimate relative risks to identify possible predictors associated with medical device-related injuries. Results: Among the 300 infants included in the study, the incidence of medical device-related injuries in the rotating group was significantly lower than that in the continuous mask or prong groups (n = 68; 40.48%; p value < 0.01). The basal prong group presented more stage 2 injuries (n = 15; 55.56%; p < 0.01). Staying ≥ 7 days in noninvasive ventilation was associated with a higher frequency of medical device-related injuries, regardless of device (63.81%; p < 0.01). Daily increments in noninvasive ventilation increased the risk for nasal injury by 4% (95%CI 1.02 - 1.06; p < 0.01). Higher birth weight indicated protection against medical device-related injuries. Each gained gram represented a decrease of 1% in the risk of developing nasal septum injury (RR: 0.99; 95%CI 0.99 - 0.99; p < 0.04). Conclusion: Rotating nasal masks with nasal prongs reduces the incidence of moderate to severe nasal injury in comparison with single devices. The addition of days using noninvasive ventilation seems to contribute to medical device-related injuries, and higher birth weight is a protective factor.