Research report of living donor kidney harvesting in Bama miniature pigs with six gene modified / 器官移植

Objective To summarize the experience and practical value of living donor kidney harvesting in Bama miniature pigs with six gene modified. Methods The left kidney of Bama miniature pigs with six gene modified was obtained by living donor kidney harvesting technique. First, the ureter was occluded, and then the inferior vena cava and abdominal aorta were freed. During the harvesting process, the ureter, renal vein and renal artery were exposed and freed in sequence. The vascular forceps were used at the abdominal aorta and inferior vena cava, and the renal artery and vein were immediately perfused with 4℃ renal preservation solution, and stored in ice normal saline for subsequent transplantation. Simultaneously, the donor abdominal aorta and inferior vena cava gap were sutured. The operation time, blood loss, warm and cold ischemia time, postoperative complications and the survival of donors and recipients were recorded. Results The left kidney of the genetically modified pig was successfully harvested. Intraoperative bleeding was 5 mL, warm ischemia time was 45 s, and cold ischemia time was 2.5 h. Neither donor nor recipient pig received blood transfusion, and urinary function of the kidney transplanted into the recipient was recovered. The donor survived for more than 8 months after the left kidney was resected. Conclusions Living donor kidney harvesting is safe and reliable in genetically modified pigs. Branch blood vessels could be processed during kidney harvesting, which shortens the process of kidney repair and the time of cold ischemia. Living donor kidney harvesting contributes to subsequent survival of donors and other scientific researches.

Minimally invasive repair of acute closed Achilles tendon rupture with two-way needle suture technique / 中华创伤骨科杂志

Objective:To investigate the efficacy of two-way needle suture technique (TNST) in the minimally invasive repair of acute closed Achilles tendon rupture.Methods:From June 2019 to June 2021, 26 patients with acute closed Achilles tendon rupture were treated at Zhengzhou Orthopedic Hospital. They were 20 males and 6 females, with a mean age of 28 (23, 31) years. The rupture end was (4.2±1.3) cm away from the calcaneal insertion, and the interval from injury to operation 4.3 (2.0, 5.0) d. Preoperative MRI examinations revealed in all the patients closed Achilles tendon rupture which was to be repaired by TNST. The operation time, incision length, incidence of complications, ankle dorsiflexion and plantar flexion were recorded. The Arner-Lindholm scoring was used to evaluate the clinical efficacy.Results:The operation time was (20.0±5.0) min and the incision length (2.5±0.4) cm. Postoperatively, all incisions healed by the first stage, with no complications like incision infection, skin edge necrosis, deep vein thrombosis at lower limbs, injury to the sural nerve, or re-rupture of the Achilles tendon. All patients were followed up for (12.0±6.0) months. At the last follow-up, the patients walked normally, their incisions healed well, the continuity of the Achilles tendon was good by palpation, their heel lift was strong, and all their activities were restored to the levels before rupture of the Achilles tendon. The ankle dorsiflexion was 22.6°±3.7° and the plantar flexion 25.3°±3.7°, According to the Arner-Lindholm evaluation, the clinical efficacy was rated as excellent in 25 cases and as good in 1 case, giving an excellent and good rate of 100% (26/26).Conclusion:In the minimally invasive repair of acute closed Achilles tendon rupture, TNST shows the advantages of limited surgical invasion, a low incidence of postoperative complications, and reliable curative effects.

Comparison of a minimally invasive osteosynthesis technique with conventional open surgery for transverse patellar fractures / 中华创伤杂志(英文版)

PURPOSE@#The study aims to compare the efficacy and safety of a new minimally invasive osteosynthesis technique with those of conventional open surgery for transverse patellar fractures.@*METHODS@#It was a retrospective study. Adult patients with closed transverse patellar fracture were included, and with open comminuted patellar fracture were excluded. These patients were divided into minimally invasive osteosynthesis technique (MIOT) group and open reduction and internal fixation (ORIF) group. Surgical time, frequency of intraoperative fluoroscopy, visual analogue scale score, flexion, extension, Lysholm knee score, infection, malreduction, implant migration and implant irritation in two groups were recorded and compared. Statistical analysis was performed by the SPSS software package (version 19). A p < 0.05 indicated statistical significance.@*RESULTS@#A total of 55 patients with transverse patellar fractures enrolled in this study, the minimally invasive technique was performed in 27 cases, and open reduction was performed in 28 cases. The surgical time in the ORIF group was shorter than that in the MIOT group (p = 0.033). The visual analogue scale scores in the MIOT group were significantly lower than those in the ORIF group only in the first month after surgery (p = 0.015). Flexion was restored faster in the MIOT group than that in the ORIF group at one month (p = 0.001) and three months (p = 0.015). Extension was recovered faster in the MIOT group than that in the ORIF group at one month (p = 0.031) and three months (p = 0.023). The recorded Lysholm knee scores in the MIOT group were always greater than those in the ORIF group. Complications, such as infection, malreduction, implant migration, and implant irritation, occurred more frequently in the ORIF group.@*CONCLUSION@#Compared with the ORIF group, the MIOT group reduced postoperative pain and had less complications and better exercise rehabilitation. Although it requires a long operation time, MIOT may be a wise choice for transverse patellar fractures.

Clinical study on a novel minimally invasive Achilles tendon suture instrument for treating fresh closed Achilles tendon rupture / 中国修复重建外科杂志

OBJECTIVE@#To assess the effectiveness of a novel minimally invasive Achilles tendon suture instrument in the treatment of fresh closed Achilles tendon rupture.@*METHODS@#A retrospective study was conducted on 150 patients who underwent surgical intervention for fresh closed Achilles tendon rupture. Eighty patients were treated with the novel minimally invasive Achilles tendon suture instrument (minimally invasive group) and 70 patients with traditional open surgery (traditional group). The two groups were comparable in terms of gender, age, injured side, cause of injury, the interval between injury and operation, and the distance from the fracture end to the calcaneal tuberosity ( P>0.05). The operation time, intraoperative blood loss, incision length, hospital stays, hospitalization expenses, and complications were recorded and compared. At 1 year after operation, the ankle joint function was evaluated by the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score.@*RESULTS@#The minimally invasive group demonstrated significantly shorter operation time, smaller incision length, and lower intraoperative blood loss when compared with the traditional group ( P<0.05). However, there was no significant difference in terms of hospital stays and hospitalization expenses between the two groups ( P>0.05). All patients were followed up 12-24 months after operation (mean, 15.5 months). In the traditional group, 6 cases of incision necrosis and 7 cases of Achilles tendon adhesion occurred, while in the minimally invasive group, all incisions healed at first intention and no Achilles tendon adhesion occurred. The differences in the incidences of the two complications between the two groups were significant ( P<0.05). At 1 year after operation, the AOFAS ankle-hindfoot score in the minimally invasive group was superior to that of the traditional group ( P<0.05).@*CONCLUSION@#In comparison with traditional open surgery, the use of self-designed novel minimally invasive Achilles tendon suture instrument proves to be an ideal technique for treating fresh closed Achilles tendon ruptures. This approach offers the benefits of smaller incisions, fewer complications, and better postoperative functional recovery, without increasing hospital costs.

Application value of Da Vinci robotic surgical system in radical resection of perihilar cholan-giocarcinoma / 中华消化外科杂志

Objective:To investigate the application value of Da Vinci robotic surgical system in radical resection of perihilar cholangiocarcinoma (pCCA).Methods:The retrospective and descrip-tive study was conducted. The clinicopathological data of 10 patients undergoing Da Vinci robotic radical resetion of pCCA in Union Hospital, Tongji Medical College, Huazhong University of Science and Technology from September 2018 to March 2021 were collected. There were 6 males and 4 females, aged (58±7)years. Observtaion indicators: (1) surgical situations; (2) postoperative situations; (3) follow-up. The patients were followed up by telephone interview and outpatient service to detect survival of patients and tumor recurrence up to June 2021. Measurement data with normal distribution were expressed as Mean± SD, and measurement data with skewed distribu-tion were represented as M(range). Count data were represented as absolute numbers. Results:(1) Surgical situations: 10 patients underwent Da Vinci robotic radical resection of pCCA succe-ssfully, without conversion to laparotomy or intraoperative blood transfusion. The operation time of 10 patients was (465±87)minutes, and the volume of intraoperative blood loss was (167±81)mL. Of the 10 patients, 1 case of Bismuth type Ⅲb had a positive surgical margin and the remaining 9 cases had R 0 resection. (2) Postoperative situations: the time to gastric tube extraction was (2.3±1.9)days, and the duration of postoperative hospital stay of the 10 patients was (19.9±9.0)days. Among the 10 patients, there was no second operation or perioperative death. Of the 10 patients, 6 cases had perioperative complications, including 5 cases wth pleural effusion, 3 cases with peritoneal effusion, and 1 case with intestinal obstruction, some patients had multiple complications. After symptomatic conservative treatment, pleural effusion and peritoneal effusion disappeared and intestinal obstruction was improved. None of the 10 patients had serious complica-tions such as bleeding, biliary fistula or intestinal fistula. (3) Follow-up: 10 patients were followed up for 3-20 months, with a median follow-up time of 11 months. During the follow-up, 3 of 10 patients had tumor recurrence which occurred in intrahepatic bile duct of residual liver, and no implantation metastasis was found in the rest of abdominal cavity. Of the 7 unrecurrent patients, 1 case died of gastrointestinal bleeding and multiple organ failure. Nine of 10 patients survived well. Conclusion:The Da Vinci robotic surgical system used for radical operation of pCCA is feasible.

Application of minimally invasive technique in kidney transplantation / 器官移植

Since the 21st century, minimally invasive technique has become a main development direction of surgery, which has been widely applied in all branches of surgery. In the field of kidney transplantation, minimally invasive technique has been mainly applied in the procurement of living donor kidney, kidney transplantation and the management of complications after kidney transplantation. It not only increases the resource of donor kidney, but also reduces the incidence of postoperative complications and enhances the quality of life of the recipients. The application of minimally invasive technique has become one of the research hot spots in the field of kidney transplantation. In this article, research progresses on the application of minimally invasive technique in the procurement of living donor kidney, kidney transplantation and management of complications after kidney transplantation were reviewed, aiming to provide reference for increasing the resource of donor kidney, enhancing the success rate of kidney transplantation and improving clinical prognosis of kidney transplant recipients, thereby promoting the development of minimally invasive technique in surgery.

Challenges and innovations of minimally invasive percutaneous endoscopic therapy for cervical degenerative spondylosis / 西安交通大学学报(医学版)

With further mastery of endoscopic technology， our team has gradually explored a series of endoscopic procedures to treat various types of cervical spondylosis by combining basic research and clinical needs. The procedures， including anterior， posterior and lateral approaches through the cervical spine， have been able to treat most of the common clinical cervical spine diseases. For cervical spondylosis combined with cervical spine sequence abnormalities and poor stability， endoscopic reconstructive surgery is the direction of our efforts. We will continue to learn from advanced experience， explore unfamiliar areas and promote the technology so that we will be able to finally fulfil the wish of Chinese people to receive minimally invasive surgical treatment for cervical spondylosis in China.

Clinical effect of anterolateral minimally invasive plate osteosynthesis in treatment of middle-distal humeral shaft fracture / 中华创伤杂志

Objective:To investigate the clinical effect of minimally invasive plate osteosynthesis (MIPO) through anterolateral approach in treatment of middle-distal humeral shaft fracture.Methods:A retrospective case series study was conducted to analyze the clinical data of 21 patients with middle-distal humeral shaft fracture admitted to 7th Medical Center of Chinese PLA General Hospital from August 2015 to March 2018, including 12 males and 9 females, aged 18-68 years [(31.3±3.6)years]. All were closed fracture. According to AO classification, the fracture were classified as type A in 6 patients, type B in 10 and type C in 5. All patients were treated with anterolateral minimally invasive plate fixation. The operation time, intraoperative blood loss and hospital stay were recorded. The fracture healing was observed after operation. The visual analogue scale (VAS), University of California at Los Angeles (UCLA) shoulder rating scale, and Mayo elbow performance score (MEPS) were used to evaluate the effectiveness before operation and at 2 weeks, 3 months and 12 months after operation.Results:All patients were followed up for 12-26 months [(18.2±2.4)months]. The operation time was 50-82 minutes [(68.2±19.4)minutes], with intraoperative blood loss of 40-95 ml [(60.2±21.3)ml]. The hospital stay was 6-16 days [(6.8±1.2)days]. There was no iatrogenic vascular or nerve injury during operation. The patients with radial nerve injury before operation were all adventitia contusion. The nerve function returned to normal within 3 months after operation. All fractures were healed within 5-10 months [(5.3±1.2)months]. At 2 weeks, 3 months and 12 months after operation, the VAS [(3.6±0.8)points, (2.1±0.4)points, (1.8±0.3)points] was lower than that before operation [(8.3±1.6)points] ( P<0.05); UCLA shoulder rating scale [(31.2±1.5)points, (33.6±0.8)points, (34.6±0.5)points] was higher than that before operation [(28.4±2.3)points] ( P<0.05); and MEPS [(80.2±3.4)points, (93.4±2.2)points, (96.4±3.5)points] was higher than that before operation [(60.5±4.5)points] ( P<0.05). At the last follow-up, the UCLA shoulder rating scale and MEPS showed excellent results. Conclusion:For middle and lower humeral shaft fracture especially for the fracture line relatively distal to the shaft, MIPO technique through anterolateral approach can attain satisfactory results in terms of pain, range of motion of shoulder and elbow joint, and joint function.

Application of minimally invasive technique in the treatment of acute obstructive suppurative cholangitis / 国际外科学杂志

Acute obstructive suppurative cholangitis (AOSC) is one of the common surgical acute abdomen. It often causes the increase of intrabiliary pressure due to biliary obstruction, resulting in various clinical symptoms. The onset is urgent and the disease progresses quickly. It is the primary cause of death of benign biliary diseases. Timely biliary decompression and bile drainage are the key to treat AOSC and save the lives of patients. With the continuous progress of the concept of enhanced recovery after surgery and minimally invasive technical means, minimally invasive technical means such as endoscopic retrograde cholangiopancreatography, ppercutaneous transhepatic catheterizde drainage and endoscopic ultrasound guided biliary drainage have gradually become the preferred treatment for AOSC, playing a more and more important role in the treatment of AOSC. Combined with relevant research literature and the author′s personal experience in the treatment of AOSC with these technologies, this paper introduces the application value, advantages and disadvantages of the above three minimally invasive technologies in the treatment of AOSC.

Comparison of intervertebral height and lordosis of fusion segment between open- and minimally invasive-transforaminal lumbar interbody fusions / 中国修复重建外科杂志

Objective: To analyze the restoration of intervertebral height and lordosis of fusion segment after open-transforaminal lumbar interbody fusion (Open-TLIF) and minimally invasive-TLIF (MIS-TLIF). Methods: Between January 2013 and February 2016, patients who treated with TLIF due to lumbar degenerative diseases and met the selection criteria were selected as the study objects. Among them, 41 patients were treated with open-TLIF (Open-TLIF group), 34 patients were treated with MIS-TLIF (MIS-TLIF group). There was no significant difference between the two groups ( P>0.05) in gender, age, body mass index, disease type, disease duration, pathological segment, and other general data. The intraoperative bleeding volume, hospital stay, visual analogue scale (VAS) score of waist and leg, and Oswestry disability index (ODI) were recorded before and after operation. The anterior disc height (ADH), posterior disc height (ADH), and segmental lordosis (SL) of fusion segment were measured by X-ray film before and at 6 months after operation. The differences of ADH, PDH, and SL between pre- and post-operation were calculated. Results: The intraoperative bleeding volume and hospital stay in Open-TLIF group were significantly higher than those in MIS-TLIF group ( t=14.619, P=0.000; t=10.021, P=0.000). All incisions healed by first intention without early complications. All patients were followed up 6-24 months (mean, 12.6 months) in Open-TLIF group and 6-24 months (mean, 11.5 months) in MIS-TLIF group. The preoperative VAS scores of waist and leg and ODI of the two groups significantly improved ( P0.05). Imaging examination showed the good intervertebral fusion. There was no significant difference in ADH, PDH, and SL between the two groups before operation and at 6 months after operation ( P>0.05). The differences of ADH, PDH, and SL between the two groups were not significant ( P>0.05). The ADH, PDH, and SL after operation significantly increased in the two groups ( P<0.05). Conclusion: Open-TLIF and MIS-TLIF show similar effectiveness and radiological change in the treatment of single lumbar degenerative diseases and the improved intervertebral height and lordosis, but MIS-TLIF can significantly reduce hospital stay and intraoperative blood loss.

Clinical study of the minimally invasive extraction of impacted supernumerary teeth in 85 cases / 口腔疾病防治

Objective@# To explore the surgical design and surgical Methods for the minimally invasive extraction of embedded supernumerary teeth and to provide a reference for clinical practice.@* Methods@# A total of 87 embedded supernumerary teeth were removed from 85 patients. CBCT examination was performed before the operation. The nearest surgical approach was selected based on the distance between the embedded supernumerary teeth and the bony plate of the buccal tongue (lip and palate). The CBCT measuring ruler measured the maximum diameter of the impacted dental crown. According to the radius of the buccal and tongue directions of the crown, the upper and lower boundaries (bucco-lingual direction) of the bone to be deboned were determined with reference to the top of the alveolar crest or adjacent enamel cementum. A horizontal vertical line was made from the point to the meridian, and the length of the horizontal line was 1/2 the diameter of the impacted multiple crown. Thus, the radius determined the horizontal starting and ending points of the bone to be boneless. A trapezoidal or arcuate incision was made with an electric knife under block anesthesia and local infiltration anesthesia. The incision retained the gingival papilla. The upper and lower as well as the near and far midpoints of the bone were marked with a bone ruler. Starting from the midpoint area, the upper and lower points were connected. The mesial bone was removed in the mesial direction, and the range of the removed bone was slightly larger than the radius of the crown, showing the crown of the embedded supernumerary teeth. A surgical impact air handpiece with a 45-degree elevation angle or a piezosurgery device was used to divide the crown of the embedded supernumerary teeth into two parts. The crown and dental tissues were removed in pieces, the surgical area was cleaned and rinsed, and the wound was closed. Anti-inflammatory and swelling treatments were administered after the operation, and painkillers were prepared. The patients were revisited 7 days after the operation to check for wound healing. We asked and recorded the amount of painkillers taken by the patients. @*Results@#All patients had good wound healing 7 days after the operation, and the wounds were sutured. There was no swelling on the maxillofacial surface, and the degree of opening was basically normal. No other complications such as infection or numbness occurred. Fifty-eight patients did not take painkillers. @*Conclusion@#CBCT can be used to locate the embedded supernumerary teeth in bone. The surgical approach can be chosen based on the principle of proximity. During the surgery, the bone ruler is used to accurately locate the bone and remove the embedded supernumerary teeth in pieces, which can achieve a minimally invasive effect.

Comparison of the short-term curative effect of visualization of percutaneous transforaminal endoscopic discectomy and microendoscopic discectomy in the treatment of lumbar spinal stenosis / 中国脊柱脊髓杂志

Objectives:To compare the early curative effect of visualization of percutaneous transforaminal endoscopic discectomy(VPTED) and microendoscopic discectomy (MED) in the treatment of lumbar spinal stenosis.Methods:49 patients with single segmental lumbar spinal stenosis combined with lumbar disc herniation(LDH) were treated in our hospital from March 2016 to March 2017.Among them,21 cases accepted VPTED,and 28 cases underwent MED.The length of incision,amount of bleeding during operation,operation time,length of hospital stay and the cost of hospitalization were recorded in the both groups.Visual analogue scale(VAS) was used to evaluate the effect of surgery,Oswestry disability index(ODI) was used to evaluate the clinical efficacy.The modified MacNab criteria were used to evaluate the efficacy of the patients at final follow-up.Results:There were no statistical differences among the age,the ratio of male to female,follow-up time,low back pain,weakness,sensory disturbance,general reflexes and prominent segments(P＞0.05).There were statistically significant differences between the two groups in preoperative and postoperative VAS and ODI scores(P＜0.05).There was no significant difference in VAS or ODI score between groups at the same time (P＞0.05).The length of incision(0.78±0.06cm vs 1.95±0.12cm),the amount of intraoperative perspective(15.86± 2.66 vs 2.18±0.38) and the operation time(87.51±30.46min vs 47.53±13.61min) had significant difference between VPTED and MED group(P＜0.05).There was no significant difference in hospitalization time or hospitalization expenses between the two groups(P＞0.05).At final follow-up,based on the MacNab standard,it was excellent in 17 cases,good in 3 cases,fair in 1 case in VPTED group;it was excellent in 22 cases,good in 4 cases,fair in 2 cases in MED group.Excellent rate of the VPTED group was 95.24％,and that was 92.86％ in the MED group,there was no significant difference between the two groups(P＞0.05).Conclusions:Visualization of percutaneous transforaminal endoscopic discectomy (VPTED) and microendoscopic discectomy (MED) in the treatment of lumbar spinal stenosis have good short-term curative effect,it iproves that VPTED is a safe and effective minimally invasive surgery.

Application and outlooks of new minimally-invasive techniques in fetal surgery / 医疗卫生装备

Development and current problems of fetal surgery were introduced. Application and research frontiers of new minimally-invasive techniques were elaborated from the aspects of intraoperative imaging diagnosis and navigation, new-type minimally-invasive instrument,energy therapy and robot technique for diagnosis and treatment.Current bottlenecks and future outlooks of new minimally-invasive techniques in fetal surgery were analyzed. Great clinical potential of new minimally-invasive techniques in fetal surgery was stated.It's pointed out that how to integrate diagnosis and therapy and apply them to real clinical treatment would be the focus of future research.

Application of minimally invasive cosmetic dentistry in the clinics of pediatric dentistry / 华西口腔医学杂志

With the minimally invasive treatment attracting considerable attention in the field of dentistry, a series of oral minimally invasive treatment technologies, including minimally invasive cosmetic dentistry (MICD) technology, is emerging. Children, as a special group of patients, are in the critical stage of the initial formation of psychological structure. Therefore, children's dental treatment should not be limited to restoring function and relieving pain. The development, aesthetics, and physical and mental health should also be given attention. Therefore, in recent years, MICD technology has been widely used in diagnosis and treatment of pediatric dentistry. This review provides a detailed introduction regarding a series of techniques in pediatric dentistry.

Short-term effectiveness of percutaneous endoscopic lumbar discectomy in treatment of buttock pain associated with lumbar disc herniation / 中国修复重建外科杂志

Objective: To evaluate the short-term effectiveness of percutaneous endoscopic lumbar discectomy (PELD) in treatment of buttock pain associated with lumbar disc herniation. Methods: Between June 2015 and May 2016, 36 patients with buttock pain associated with lumbar disc herniation were treated with PELD. Of 36 cases, 26 were male and 10 were female, aged from 18 to 76 years (mean, 35.6 years). The disease duration ranged from 3 months to 10 years (mean, 14 months). The location of the pain was buttock in 2 cases, buttock and thigh in 6 cases, buttock and the ipsilateral lower extremity in 28 cases. Thirty-four patients had single-level lumbar disc herniation, and the involved segments were L 4, 5 in 15 cases and L 5, S 1 in 19 cases; 2 cases had lumbar disc herniation at both L 4, 5 and L 5, S 1. The preoperative visual analogue scale (VAS) score of buttock pain was 6.1±1.3. VAS score was used to evaluate the degree of buttock pain at 1 month, 3 months, 6 months, and last follow-up postoperatively. The clinical outcome was assessed by the modified MacNab criteria at last follow-up. Results: All patients were successfully operated and the operation time was 27-91 minutes (mean, 51 minutes). There was no nerve root injury, dural tear, hematoma formation, or other serious complications. The hospitalization time was 3-8 days (mean, 5.3 days). All incisions healed well and no infection occurred. Patients were followed up 12-24 months (median, 16 months). MRI examination results showed that the dural sac and nerve root compression were sufficiently relieved at 3 months after operation. Patients obtained pain relief after operation. The postoperative VAS scores of buttock pain at 1 month, 3 months, 6 months, and last follow-up were 1.1±0.6, 0.9±0.3, 1.0±0.3, and 0.9±0.4 respectively, showing significant differences when compared with preoperative VAS scores ( P0.05). At last follow-up, according to the modifed MacNab criteria, the results were excellent in 27 cases, good in 9 cases, and fair in 2 cases, and the excellent and good rate was 94.4%. Conclusion: PELD can achieve satisfactory short-term results in the treatment of buttock pain associated with lumbar disc herniation and it is a safe and effective minimally invasive surgical technique.

Minimally Invasive Repair Technique of Achilles Tendon Using Sponge Forceps: A Technical Report / 대한족부족관절학회지

Various minimally invasive repair techniques have been performed for acute Achilles tendon rupture. Despite this, it is difficult to use these techniques in common practice because of the necessity of special instruments. We propose a novel minimal invasive technique using sponge holding forceps, which are commonly used in the operating room for the acute Achilles tendon rupture.

Fractura de radio distal: abordaje mininvasivo con preservación del pronador cuadrado / Distal radius fracture: minimally invasive approach with pronator quadratus preservation

Objetivo: Describir y analizar una técnica de osteosíntesis palmar de radio distal con preservación del pronador cuadrado. Materiales y Métodos: Se revisaron, en forma retrospectiva, 24 pacientes operados con esta técnica (16 mujeres y 8 hombres; edad promedio 65 años). Doce fracturas eran de tipo A; 7, de tipo B y 5, de tipo C. La técnica quirúrgica consiste en practicar una incisión cutánea de 25 mm y profundizar hasta observar el pronador cuadrado. Sin seccionarlo, se realiza una disección de su borde distal, a fin de introducir la placa bloqueada volar por debajo del músculo. Se colocan los tornillos distales bajo visión directa y los tornillos proximales, en forma percutánea. La evaluación posoperatoria se llevó a cabo mediante análisis clínico-funcional y radiográfico. Resultados: En el último control, todos los pacientes presentaban signos clínicos y radiográficos de consolidación ósea. El puntaje en la escala DASH fue, en promedio, de 4,8. Se observó una inclinación palmar posoperatoria de la superficie articular del radio de 14,3º promedio y una inclinación radial de 26,3º promedio. No se detectaron complicaciones relacionadas con la fractura, el implante o la herida quirúrgica en ninguno de los controles posoperatorios. Conclusiones: Sin bien no existe bibliografía que demuestre que la técnica mininvasiva sea superior, sostenemos que el hecho de obtener resultados similares con ambos abordajes (mininvasivo y convencional) justifica llevar a cabo esta técnica con preservación del pronador cuadrado, sobre todo en los pacientes preocupados por el aspecto estético de la cicatriz. Nivel de evidencia: IV.

Objective: To describe and analyze a volar locking plate technique for distal radius fractures with pronator quadratus preservation. Methods: We retrospectively reviewed 24 patients who underwent minimally invasive approach (16 women, 8 men; mean age 65 years). Twelve fractures were type A, 7 type B and 5 type C. The surgical technique involves making an incision of 25 mm and deepened to expose the pronator quadratus. Afterwards, a distal edge dissection of the pronator quadratus is performed in order to introduce the volar locking plate under the muscle. Distal screws are placed under direct vision and proximal screws are placed percutaneously. Postoperative evaluation included clinical, functional and radiological analyses. Results: At last control, all patients had clinical and radiographic signs of bone healing. The average score on the DASH scale was 4.8 points. Postoperative average volar tilt was 14.3° and the average radial inclination was 26.3°. There were no complications related to the fracture, implant or surgical wound in the postoperative controls. Conclusions: Although we did not obtain better results with this technique than with the conventional one, and there is no literature available which demonstrates that the minimally invasive technique is superior, we believe that the fact of getting similar results with both approaches justifies carrying out this technique with pronator quadratus preservation, especially in patients concerned about the cosmetic appearance of the scar. Level of evidence: IV.

Application of minimally invasive technique in the treatment of spinal fungal infection / 局解手术学杂志

Objective To explore the effective of minimally invasive techniques for diagnosis and treatment of the spinal fungal infec-tions. Methods The clinical data of 6 patients with spinal fungal infection in our hospital from January 2012 to June 2014 was reviewd. All patients were taken biopsy diagnosis for spinal fungal infection by percutaneous endoscopic lumbar discectomy. Along with the oral antifungal drugs treatment,all the patients received the interbody fusion surgery by percutaneous pedicle screw fixation and debridement. The clinical and image data were collected during the 6 months following period. Results The symptoms of all the patients was relieved after surgery and no complications occurred. All the patients were followed up for 6 months. The value of ESR and CRP decreased to normal level at the first month after operation. The VAS scores decreased from (7. 0 ± 0. 8) to (0. 8 ± 0. 7) and the ODI scores decreased from (56. 1 ± 7. 7) to (5. 7 ± 2. 1). The X-ray image confirmed solid fusion at the 6 months after surgery. Conclusion The minimally invasive technique of spine is a good way to treat spinal fungal infection.

A minimally invasive multiple percutaneous drainage technique for acute necrotizing pancreatitis / 世界急诊医学杂志（英文）

@#BACKGROUND: In approximately 20% of patients, necrotizing pancreatitis is complicated with severe acute pancreatitis, with high morbidity and mortality rates. Minimally invasive step-up approach is both safe and effective, but sometimes requires multiple access sites. METHODS: A 62-year-old woman was admitted with diabetic ketoacidosis, and initial computed tomography (CT) revealed no evidence of acute pancreatitis. She was clinically improved with insulin therapy, fluid administration, and electrolyte replacement. However, on the 14th day of admission, she developed a high-grade fever, and CT demonstrated evidence of acute necrotizing pancreatitis with a large collection of peripancreatic fluid. Percutaneous transgastric drainage was performed and a 14 French gauge (Fr) pigtail catheter was placed 1 week later, which drained copious pus. Because of persistent high-grade fever and poor clinical improvement, multiple 8 and 10 Fr pigtail catheters were placed via the initial drainage route, allowing the safe and effective drainage of the extensive necrotic tissue that was occupying the bilateral anterior pararenal space. RESULTS: After drainage, the patient recovered well and the last catheter was removed on day 123 of admission. CONCLUSIONS: Multiple percutaneous drainage requires both careful judgment and specialist skills. The perforation of the colon and small bowel as well as the injury of the kidney and major vessels can occur. The current technique appears to be safe and minimally invasive compared with other drainage methods in patients with extended, infected necrotic pancreatic pseudocysts.

The Result Treated by Open Reduction and Internal Fixation with Minimally Invasive Technique in Joint Depressive Calcaneal Fracture

PURPOSE: To evaluate the short term follow-up results of minimally invasive technique in the management of Sanders type II, III, and IV joint depressive calcaneal fracture. MATERIALS AND METHODS: Between May 2008 and May 2011, we studied 17 cases undergoing treatment with minimally invasive technique with modified sinus tarsi approach for Sanders II, III, and IV joint depressive intra-articular calcaneal fracture and were followed up for more than 1 year. We evaluated the treatment result by assessing the radiologic parameters (Bohler angle, Gissane angle, and calcaneal height/width/length) and clinical outcomes (American Orthopaedic Foot and Ankle Society [AOFAS] score and visual analog scale [VAS]) and investigating the complication. RESULTS: Radiological results improved from 7.9degrees to 19.8degrees in the Bohler angle after the operation. Satisfactory results were obtained in clinical assessment with average AOFAS score of 82.45 and the average VAS score of 3.94. We experienced 3 cases of complications, 1 case of superficial wound infection and radiologic findings of subtalar arthritis in 2 cases. CONCLUSION: Minimally invasive technique may be a useful alternative surgical method in the management of Sanders type II, III, and IV joint depressive calcaneal fracture that cannot adopt extensile approach, which enable to obtain good radiological and clinical results.