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Objective:To investigate the efficacy and safety of nerve decompression surgery through the lateral-rectus approach for sacral plexus nerve injury after sacral fracture fixation.Methods:A retrospective study was conducted to analyze the 10 patients with combined sacral plexus nerve injury after sacral fracture fixation who had been admitted to Department of Orthopedics, Xiangya Hospital between May 2022 and May 2023. There were 2 males and 8 females with an age of 16.5 (15.0, 26.3) years. At the time of injury, the patients had been clearly diagnosed as sacral fracture combined with sacral plexus nerve injury. By the Denis classification of sacral fractures: 7 cases of type Ⅱ and 3 cases of type Ⅲ; sacral plexus nerve injury sites: 1 case of L 4, 8 cases of L 5, 7 cases of S 1, and 2 cases of S 2. All of them were treated with reduction and internal fixation via the posterior approach within 2 weeks after injury, but after surgery their manifestations of sacral plexus nerve injury still persisted which were confirmed by CT, magnetic resonance imaging and neuromuscular electromyography. Therefore, at (4.0±2.3) months after internal fixation, all patients were treated with nerve decompression surgery through the lateral-rectus approach. The operative time, intraoperative bleeding, length of hospitalization, Gibbons nerve damage score and neurological recovery at the last follow-up were recorded. Results:In the 10 patients, the operative time was (112.0±21.5) min, intraoperative bleeding (215.0±91.3) mL, and length of hospitalization 7.0 (6.0, 8.5) d. Intraoperatively, sacral plexus nerve compression was found in 9 cases (6 cases of nerve compression and pulling due to fracture displacement, 3 cases of nerve entrapment due to soft tissue scar adhesion), and 1 case of nerve root avulsion injury. No other intraoperative complications occurred. The 10 patients were followed up for (9.2±2.3) months after surgery. At the last follow-up, the Gibbons score for the 10 patients improved from preoperative 3.0 (3.0, 3.3) points to 1.0 (1.0, 2.0) point, and their British Medical Research Council (BMRC) nerve injury grading was improved from the preoperative grade 0.0 (0.0, 1.3) to grade 3.5 (2.8, 4.0) (1 case of M5, 4 cases of M4, 4 cases of M3, and 1 case of M2).Conclusion:The lateral-rectus approach is effective and safe for exploration and decompression of the sacral plexus nerve in patients combined with sacral plexus nerve injury despite sacral fracture fixation.
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Accurate classification of the acetabular injuries and appropriate treatment plan are great challenges for orthopedic surgeons because of the irregular anatomical structure of the acetabulum and aggregation of important vessels and nerves around it. Letournel-Judet classification system has been widely applied to classify acetabular fractures. However, there are several limitations, including incomplete inclusion of fracture types, difficulty in understanding and insufficient guidance for surgical treatment, etc. Serious complications such as traumatic arthritis are common due to wrong classification and diagnosis and improper selection of surgical strategy, which brings a heavy burden to the society and families. Three-column classification, based on anatomic characteristics, has advantages of containing more fracture types and being easy to understand, etc. To solve the problems existing in the diagnosis and treatment process based on Letournel-Judet classification, achieve accurate diagnosis and treatment of patients with acetabular fractures, and obtain satisfactory prognosis, the Orthopedic Trauma Emergency Center of Third Hospital of Hebei Medical University and the Trauma Orthopedic Branch of the Chinese Orthopedic Association organized experts from relevant fields to formulate the Expert consensus on the accurate diagnosis and treatment of acetabular fractures based on three-column classification ( version 2023) in terms of principles of evidence-based medicine. Based on the three-column classification, 15 recommendations were proposed, covering the diagnosis, treatment, complication prevention and management, etc, so as to provide reference for accurate diagnosis and treatment of acetabular fractures.
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Objective:To compare the clinical efficacy of robot-assisted versus fluoroscopy-assisted sacroiliac screw internal fixation for posterior pelvic ring fractures.Methods:China National Knowledge Infrastructure (CNKI), Wanfang Data, Chinese Medical Journal Full-text Database, PubMed, Web of Science and ScienceDirect were searched for literature on robot-assisted versus fluoroscopy-assisted sacroiliac screw internal fixation for posterior pelvic ring fractures. The search time was from the establishment of each database to March 2023. Meta-analysis was performed on the included literature. The random-effects model was used when the heterogeneity between groups was large, and the fixed-effects model was used when the heterogeneity between groups was small.Results:A total of 15 studies were included in the meta-analysis, including 465 patients in the robot-assisted group and 396 patients in the fluoroscopy-assisted group. Meta-analysis showed that the number of fluoroscopies [ SMD=-3.12, 95% CI (-4.34, -1.89), P<0.001], the number of guide pin adjustments [ SMD=-3.75, 95% CI (-6.77, -0.72), P=0.015], intraoperative blood loss [ SMD=-0.83, 95% CI (-1.18, -0.49), P<0.001], and operative time [ SMD=-2.59, 95% CI (-4.11, -1.08), P<0.001] were smaller than those in the fluoroscopy-assisted group. The rate of excellent screw implantation [ OR=10.13, 95% CI (3.67,27.98), P<0.001] of the robot-assisted was larger than the fluoroscopy-assisted group. There was no significant difference in Majeed functional score [ SMD=0.28, 95% CI (-0.0003, 0.55), P=0.050] and fracture healing time [ SMD=-0.14, 95% CI (-0.46, 0.17), P=0.367] between the two groups. Conclusion:Robot-assisted percutaneous sacroiliac screw fixation for posterior pelvic ring fractures has the advantages of less fluoroscopy, less guide pin adjustment, less intraoperative blood loss, shorter operation time, and higher rate of excellent screw position. However, there is no difference in Majeed score and fracture healing time between robot-assisted percutaneous sacroiliac screw fixation and fluoroscopy-assisted percutaneous sacroiliac screw fixation.
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OBJECTIVES@#To screen the risk factors for predicting venous thromboembolism (VTE) risk after hip fracture in the elderly, to establish a prediction model based on these factors, and to analyze its prediction efficacy.@*METHODS@#A total of 52 hip fracture patients over 60 years old with VTE admitted to the Department of Orthopaedic Trauma, Xiangya Hospital, Central South University from March 2017 to April 2019 were selected as a thrombus group, and another 52 hip fracture patients over 60 years old without VTE were selected as a control group. The differences of hospitalization data and examination results between the 2 groups were compared. Logistic regression model was used to explore the influence of risk factors on VTE risk after hip fracture in the elderly and construct the prediction model based on these factors. The receiver operating characteristic curve was used to analyze the predictive effectiveness of model, Hosmer-lemeshow goodness of fit test was used to evaluate the fitting degree of prediction model.@*RESULTS@#Univariate analysis showed that injury-admission interval, Caprini score, WBC count, platelet count, neutrophil count, neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, monocyte-to-lymphocyte ratio, systemic immune-inflammatory index (SII), and fibrinogen in the thrombus group were higher than those in the control group (all @*CONCLUSIONS@#SII, Caprini score, and injury-admission interval are independent predictors of VTE after hip fracture in the elderly. The prediction model based on these 3 factors has a good efficacy on the prediction of VTE risk, and could provide important reference for the prevention, management, and treatment of VTE after hip fracture in the elderly.
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Anciano , Humanos , Persona de Mediana Edad , Fracturas de Cadera/cirugía , Curva ROC , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Tromboembolia Venosa/etiologíaRESUMEN
Objective To retrospectively analyze the effects of nerve block anesthesia versus general anesthesia on intertrochanteric fracture in the elderly. Methods The 104 elderly inpatients undergoing closed reduction and intramedullary nailing for the treatment of femoral intertrochanteric fractures were recruited into this study at Department of Orthopedics ,Xiangya Hospital ,Central South University from January 2015 to June 2017.Medical records were collected and analyzed by SPSS 16.0 or GraphPad Prism 6.0 software. Results A total of 104 patients were divided into general anesthesia group(n= 48 )and nerve block anesthesia group (n= 56 ). There was no statistical difference in the demographic characteristics between the two groups. The changes in heart rate ,maximum changes of systolic/diastolic blood pressures ,and infusion volume during surgery were lower in the nerve block anesthesia group than in the general anesthesia group [(12.7 ± 7.3)vs. (18.1 ± 7.8)beats/min ,(22.5 ± 8.8/12.2 ± 7.5)mmHg vs. (34.3 ± 7.9/21.6 ± 6.6)mmHg ,(792.9 ± 387.0)ml vs. (1 083.0 ± 445.5)ml ,respectively ,t=3.64 ,7.14 ,6.73 ,5.16 ,all P<0.01]. There was no statistically significant difference between two groups in other perioperative data and the number of deaths at three months and one year after surgery. Conclusions As compared with the general anesthesia ,the nerve block anesthesia has less effects on the heart rate ,less maximum changes of systolic and diastolic blood pressures ,and less infusion volume during surgery ,and has no significant increase in postoperative mortality ,which is safe and worthy of further promotion.
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OBJECTIVE@#To determine the effectiveness of external fixator combined with limited internal fixation for Tile B pelvic fractures.@*METHODS@#Fourteen patients with Tile B pelvic fracture were treated by external fixator combined with limited internal fixation between September 2004 and June 2009.@*RESULTS@#All the patients were followed for 6-49 (20.2 +/- 10.2) months. According to the Matta standard, the outcome of 9 patients was excellent, 4 patients were good, while the other one patient was fair.@*CONCLUSION@#External fixator combined with limited internal fixation is effective for Tile B pelvic fracture. It can not only reduce the anatomic position of the pelvis, but also strengthen the stability of the pelvis as a whole. This method is less invasive and traumatic, which promotes the recovery of patients.
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Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Fijadores Externos , Fijación de Fractura , Métodos , Fijación Interna de Fracturas , Métodos , Fracturas Óseas , Cirugía General , Huesos Pélvicos , Heridas y Lesiones , Cirugía GeneralRESUMEN
BACKGROUND: With deepening of spinal biomechanics, artificial lumbar disc replacement is considered to be the optimal choice for treating degenerative lumbar disease. However, studies concerning biomechanics of artificial lumbar disc are insufficient. OBJECTIVE: To establish the three-dimensional (3-D) finite element model of artificial lumbar disc replacement and to explore the effects of artificial lumbar disc replacement on zygapophyseal joints using biomechanical analysis. METHODS: Based on normal 3-D finite element model of lumbar motion segment, L4-5 intervertebral disc, superior and inferior endplates were removed, and then, the model of SB-Charite Ⅲ disc prosthesis was added, which remained annular fibrosus and ligaments at L4-5 intervertebral space. Thus, 3-D finite element model of L4-5 segments artificial lumbar disc replacement was constructed. Biomechanical analysis of this model was processed under axial load, forward flexion, lateral bending or posterior extension moments. The stress data were contrasted with the normal 3-D finite element model of artificial disc replacement. RESULTS AND CONCLUSION: After artificial lumbar disc replacement, the data of biomechanical analysis indicated: ①There was no significant differences between the zygapophyseal joint and normal segment of stress under axial load (P > 0.01).②Compared with normal segment, the stress of anterior, posterior of upper and lower vertebral body and bilateral zygapophyseal joint had no obviously difference under forward flexion and posterior extension moments (P > 0.01). ③The stress differences between the both sides of upper and lower vertebral body and bilateral zygapophyseal joint were not significant under lateral bending moment (P > 0.01). Artificial lumbar disc replacement can keep the stress of motion segment at normal level, which can meet the needs of spinal functional reestablishment.
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Objective To explore the clinical outcome of perforator flaps for reconstruction of limb soft tissue defects. Methods In this case series, from 2007 July to 2009 May, 108 cases of perforator flap to reconstruct the defects of the extremities were performed, of these, 98 were free perforator flaps, 10 were pedicled flaps. The perforator flaps included deep inferior epigastric artery perforator flap, anterolateral thigh perforator flap, thoracodorsal artery perforator flap, lateral thigh perforator flap, posterior interosseous artery perforator flap, collateral radial artery perforator flap, medial sural artery perforator flap, posterior tibial artery perforator flap, deep circumflex iliac artery perforator flap and peroneal artery perforator flap. The maximum size of the perforator flap was 44 cmx 9 cm, the minimum size of the perforator flap was 4 em x 2 cm.The donor defect was closed directly. Results Venous congestion occurred in 5 flaps, in 1 case venous congestion was overcomed after released the dressing, 4 flaps requiring reexploration for venous insufficiency,2 had a successful outcome, the other 2 flaps failed . The other 103 flaps were successful. The wounds healed without any infection complications. The follow-up ranges from 6-24 months( 10 months on average). The flaps were of good appearance and not bulky; there were only linear scars on the donor sites, the cosmesis and function of the donor sites were satisfying. Conclusion The muscle, deep fascia and motor nerve are not contained in the flap, the advantages of this type of flap is reducing morbidity of the donor site and its reliable blood supply and suitable thickness for resurfacing, no secondary debuiking is necessary. The perforator flaps can be chosen as the first option to deal with superficial extremity wounds.
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BACKGROUND: Artificial lumbar disc replacement is a novel approach to treat lumbar disc protrusion. But its theoreticalbasis needs further verification.OBJECTIVE:To establish finite element model of lumbar disc replacement for biomechanical studies.DESIGN: A single sample study taking the data of L4-5 three-dimensional infinite element model as object of research.SETTING: Orthopedic Department of Xiangya Hospital of SunYat-sen University.PARTICIPANTS: The trial was conducted in the Laboratory of the Orthopedic Department of Xiangya Hospital from December 2003 through August 2004. A healthy male volunteer served as simulation. His T12-S1 underwent continuous CT scanning. There were altogether 264 images with 2 mm inthickness each. Three-dimensional images were reconstructed every 15° in order to obtain the data for three-dimensional model.METHODS: The CT images and human anatomical data were processed by 3DSMAX software to establish three-dimensional L4-5 model of normal Chinese males. It was then transformed to finite element model after processed by SAP2000 software together with Charite SB Ⅲ disc prosthesis model.MAIN OUTCOME MEASURES: The three-dimensional model and finiteelement model of lumbar spine were successfully established.RESULTS: The finite element model of Charite SB Ⅲ disc replacement in L4_5 spine was established. The total nodes were 2542 and there were 1924Solid units, 592 Area units and 50 link units.CONCLUSION:The finite element model of artificial disc replacement can be established by CT scanning, digital processor and computer aideddesign,and used for further study on spinal biomechanics.