中国修复重建外科杂志最新文献

{"title":"[Short-term effectiveness of minimally invasive treatment for posterolateral depressed tibial plateau fractures assisted by robots and arthroscopy].","authors":"Zhongyao Chen, Xing Du, Gang Luo, Dagang Tang, Xinyi Wang, Yiyang Li, Kangwen Sun, Yi Duan, Wei Shui","doi":"10.7507/1002-1892.202505004","DOIUrl":"10.7507/1002-1892.202505004","url":null,"abstract":"<p><strong>Objective: </strong>To investigate short-term effectiveness of robot-assisted fracture reduction and fixation combined with arthroscopic exploration for posterolateral depressed tibial plateau fractures.</p><p><strong>Methods: </strong>Between January 2022 and January 2024, 8 patients with posterolateral depressed tibial plateau fractures (Schatzker type Ⅲ) were treated using robot-assisted fracture reduction and fixation combined with arthroscopic exploration, with simultaneous treatment of concomitant ligament or meniscus tears. There were 3 males and 5 females with an average age of 54.1 years (range, 42-68 years). Injury mechanisms included traffic accidents (3 cases) and falls (5 cases). The time from injury to operation ranged from 2 to 4 days (mean, 3.1 days). Operation time, intraoperative blood loss, hospital stay duration, visual analogue scale (VAS) score for pain, and complications were recorded. Fracture healing and knee Rasmussen scores were assessed radiographically, while knee function was evaluated using range of motion and Hospital for Special Surgery (HSS) scores.</p><p><strong>Results: </strong>All operations were successfully completed. The operation time was 108-129 minutes (mean, 120.1 minutes). The intraoperative blood loss was 10-100 mL (mean, 41.3 mL). The hospital stay duration was 4-7 days (mean, 5.6 days). All incisions healed by first intention without complication such as peroneal nerve injury, vascular damage, or infection. All patients were followed up 32-48 weeks (mean, 40 weeks). Radiographic follow-up confirmed that the knee Rasmussen scores rated as excellent in 8 patients and all fractures healed with the healing time of 12-16 weeks (mean, 13.5 weeks). The VAS score for pain was 2-4 (mean, 2.8) at discharge and improved to 0 at 1 month after operation. The knee range of motion was 80°-110° (mean, 96.1°) at discharge and increased to 135°-140° (mean, 137.9°) at 1 month after operation. At 3 months after operation, the HSS score was 91-94 (mean, 92.8), all graded as excellent. No severe complication, including implant failure, occurred during follow-up.</p><p><strong>Conclusion: </strong>For posterolateral depressed tibial plateau fractures, the minimally invasive approach combining robot-assisted fracture reduction and fixation with arthroscopic exploration demonstrates multiple advantages, including shorter operation time, reduced intraoperative blood loss, excellent wound healing, fewer complications, and rapid recovery of knee function. This technique achieves satisfactory short-term effectiveness, while its long-term effectiveness requires further evaluation.</p>","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 7","pages":"801-806"},"PeriodicalIF":0.0,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12279912/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144638243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Analysis of effectiveness of Holosight robot navigation-assisted percutaneous cannulated screw fixation in treatment of femoral neck fractures].","authors":"Weizhen Xu, Zhenqi Ding, Hui Liu, Jinhui Zhang, Yuanfei Xiong, Jin Wu","doi":"10.7507/1002-1892.202502067","DOIUrl":"10.7507/1002-1892.202502067","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the effectiveness of Holosight robotic navigation-assisted percutaneous cannulated screw fixation for femoral neck fractures.</p><p><strong>Methods: </strong>A retrospective analysis was conducted on 65 patients with femoral neck fractures treated with cannulated screw fixation between January 2022 and February 2024. Among them, 31 patients underwent robotic navigation-assisted screw placement (navigation group), while 34 underwent conventional freehand percutaneous screw fixation (freehand group). Baseline characteristics, including age, gender, fracture side, injury mechanism, Garden classification, Pauwels classification, and time from injury to operation, showed no significant differences between the two groups ( <i>P</i>>0.05). The operation time, intraoperative blood loss, fluoroscopy frequency, fracture healing time, and complications were recorded and compared, and hip function was evaluated by Harris score at last follow-up. Postoperative anteroposterior and lateral hip X-ray films were taken to assess screw distribution accuracy, including deviation from the femoral neck axis, inter-screw parallelism, and distance from screws to the femoral neck cortex.</p><p><strong>Results: </strong>No significant difference was observed in operation time between the two groups ( <i>P</i>>0.05). However, the navigation group demonstrated superior outcomes in intraoperative blood loss, fluoroscopy frequency, deviation from the femoral neck axis, inter-screw parallelism, and distance from screws to the femoral neck cortex ( <i>P</i><0.05). No incision infections or deep vein thrombosis occurred. All patients were followed up 12-18 months (mean, 16 months). In the freehand group, 1 case suffered from cannulated screw dislodgement and nonunion secondary to osteonecrosis of femoral head at 1 year after operation, 1 case suffered from screw penetration secondary to osteonecrosis of femoral head at 5 months after operation; and 1 case suffered from nonunion secondary to osteonecrosis of femoral head at 6 months after operation in the navigation group. All the 3 patients underwent internal fixators removal and total hip arthroplasty. There was no significant difference in the incidence of complications between the two groups ( <i>P</i>>0.05). The fracture healing time and hip Harris score at last follow-up in the navigation group were significantly better than those in the freehand group ( <i>P</i><0.05).</p><p><strong>Conclusion: </strong>Compared to freehand percutaneous screw fixation, Holosight robotic navigation-assisted cannulated screw fixation for femoral neck fractures achieves higher precision, reduced intraoperative radiation exposure, smaller incisions, and superior postoperative hip function recovery.</p>","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"673-679"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179240/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Effectiveness analysis of tension band-assisted fixation for volar marginal fractures of distal radius].","authors":"Abulimiti Mireadeli, Wanming Qu, Tianbo Zhu, Daoxin Zhang, Xiaokang Zhu, Xinzhi Li, Wenyao Chen","doi":"10.7507/1002-1892.202503049","DOIUrl":"10.7507/1002-1892.202503049","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the surgical technique and effectiveness of tension band-assisted plate fixation combined with external fixator for volar marginal fractures of the distal radius.</p><p><strong>Methods: </strong>A retrospective analysis was performed on the clinical data of 12 patients with volar marginal fractures of the distal radius treated by Kirschner wire tension band-assisted anatomical plate fixation combined with external fixator between October 2018 and July 2023. The cohort included 9 males and 3 females, aged from 20 to 52 years (mean, 35.5 years). The injury causes included traffic accidents in 6 cases, falls from height in 3 cases, and fall in 3 cases. According to AO/Orthopaedic Trauma Association (AO/OTA), there were 1 case of type B2, 4 cases of type B3, 2 cases of type C1, 3 cases of type C2, and 2 cases of type C3. According to Fernandez classification, there were 2 cases of type Ⅲ, 5 cases of type Ⅳ, and 5 cases of type Ⅴ. Associated injuries included radiocarpal joint dislocation or subluxation in 7 cases and median nerve injury in 2 cases. The time from injury to operation was 2-7 days (mean, 3.2 days). Postoperatively, functional outcomes were evaluated using the modified Mayo wrist score and the Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire. Grip strength was measured as the ratio to the unaffected side, and wrist range of motion (ROM) including dorsiflexion, palmar flexion, ulnar deviation, and radial deviation was assessed.</p><p><strong>Results: </strong>All procedures were successfully completed, with an operation time of 55-110 minutes (mean, 65 minutes). All patients were followed up 6-36 months (mean, 13.7 months). Surgical incisions healed by first intention, without complications such as vascular-nerve injury or infection. Bony union and articular congruency were attained in all patients, with a healing time of 3-5 months (mean, 3.8 months). During follow-up, 1 case of Kirschner wire migration occurred with no instances of infections, radiocarpal dislocations, internal fixation failures, or extensor pollicis longus tendon ruptures. At last follow-up, the modified Mayo wrist score ranged from 65 to 92 (mean, 80.8), the DASH score ranged from 7 to 15 (mean, 11.6), the grip strength was 65%-90% (mean, 78.2%) of the unaffected side; and wrist ROM was palmar flexion 60°-85° (mean, 77.4°), dorsiflexion 55°-80° (mean, 74.8°), radial deviation 10°-25° (mean, 18.8°), and ulnar deviation 15°-30° (mean, 24.5°).</p><p><strong>Conclusion: </strong>Kirschner wire tension band-assisted anatomical plate fixation combined with external fixator for volar marginal fractures of the distal radius is a simple method with reliable fixation, which can achieve satisfactory effectiveness.</p>","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"662-667"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179245/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Early effectiveness of posterior 180-degree decompression via unilateral biportal endoscopy in treatment of lumbar spinal stenosis combined with MSU-1 lumbar disc herniation].","authors":"Feiyu Zhao, Xiaoting Qiu, Jie Yuan, Ruxing Liu, Xinyuan Wei, Wei Zhao, Yongfeng Wang","doi":"10.7507/1002-1892.202504083","DOIUrl":"10.7507/1002-1892.202504083","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Objective: &lt;/strong&gt;To evaluate early effectiveness of posterior 180-degree decompression via unilateral biportal endoscopy (UBE) in the treatment of lumbar spinal stenosis (LSS) combined with Michigan State University (MSU)-1 lumbar disc herniation (LDH).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;A retrospective analysis was conducted on clinical data from 33 patients with LSS combined with MSU-1 LDH, who met selection criteria and were treated between March 2022 and January 2024. All patients underwent UBE-assisted 180-degree spinal canal decompression. The cohort comprised 17 males and 16 females, aged 37-82 years (mean, 67.1 years). Preoperative presentations included bilateral lower limbs intermittent claudication and radiating pain, with disease duration ranging from 5 to 13 months (mean, 8.5 months). Affected segments included L &lt;sub&gt;3, 4&lt;/sub&gt; in 4 cases, L &lt;sub&gt;4, 5&lt;/sub&gt; in 28 cases, and L &lt;sub&gt;5&lt;/sub&gt;, S &lt;sub&gt;1&lt;/sub&gt; in 1 case. LSS was rated as Schizas grade A in 4 cases, grade B in 5 cases, grade C in 13 cases, and grade D in 11 cases. LDH was categorized as MSU-1A in 24 cases, MSU-1B in 2 cases, and MSU-1AB in 7 cases. Intraoperative parameters (operation time, blood loss) and postoperative hospitalization length were recorded. The visual analogue scale (VAS) score and Oswestry Disability Index (ODI) were used to assess the lower limb pain and functional outcomes after operation. Clinical efficacy was evaluated at last follow-up via modified MacNab criteria. Quantitative radiological assessments included dural sac cross-sectional area (DSCA) measurements and spinal stenosis grading on lumbar MRI. Morphological classification of lumbar canal stenosis was determined according to the Schizas grading, categorized into four grades.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;The operation time was 60.4-90.8 minutes (mean, 80.3 minutes) and intraoperative blood loss was 13-47 mL (mean, 29.9 mL). The postoperative hospitalization length was 3-5 days (mean, 3.8 days). All patients were followed up 12-16 months (mean, 13.8 months). The VAS score and ODI improved at immediate and 3, 6, and 12 months after operation compared to before operation, and the differences between different time points were significant ( &lt;i&gt;P&lt;/i&gt;&lt;0.05). At last follow-up, the clinical efficacy assessed by the modified MacNab criteria were graded as excellent in 23 cases, good in 9 cases, and poor in 1 case, with an excellent and good rate of 96.97%. Postoperative lumbar MRI revealed the significant decompression of the dural sac in 32 cases, with 1 case showing inadequate dural expansion. DSCA measurements confirmed progressive enlargement and stenosis reduction over time. The differences were significant ( &lt;i&gt;P&lt;/i&gt;&lt;0.05) before operation, immediately after operation, and at 6 months after operation. At 6 months after operation, Schizas grading of spinal stenosis improved to grade A in 27 cases and grade B in 6 cases.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusion: &lt;/strong&gt;Posterior 180-degree decomp","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"735-740"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179255/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research progress on silk fibroin-nerve guidance conduits for peripheral nerve injury repair].","authors":"Fan Dong, Yining Wang, Zixiang Wu, Quanchang Tan","doi":"10.7507/1002-1892.202504070","DOIUrl":"10.7507/1002-1892.202504070","url":null,"abstract":"<p><strong>Objective: </strong>To review the research progress on silk fibroin (SF)-nerve guidance conduits (NGCs) for peripheral nerve injury (PNI) repair.</p><p><strong>Methods: </strong>To review the recent literature on PNI and SF-NGCs, expound the concepts and treatment strategies of PNI, and summarize the construction of SF-NGCs and its application in PNI repair.</p><p><strong>Results: </strong>Autologous nerve transplantation remains the \"gold standard\" for treating severe PNI. However, it's clinical applications are constrained by the limitations of limited donors and donor area damage. Natural SF exhibits good biocompatibility, low immunogenicity, and excellent physicochemical properties, making it an ideal candidate for the construction of NGCs. SF-NGCs constructed using different technologies have been found to have better biocompatibility and bioactivity. Their configurations can facilitate nerve regeneration by enhancing regenerative guidance and axonal extension. Besides, the adhesion, proliferation and differentiation of neurons and Schwann cells related to PNI repair can be effectively promote by NGCs. This accelerates the speed of nerve regeneration and improves the efficiency of repair. In addition, SF-NGCs can be used as regenerative scaffolds to provide biological templates for nerve repair.</p><p><strong>Conclusion: </strong>The biodegradable natural SF has been extensively studied and demonstrated promising application prospects in the field of NGCs. It might be an effective and viable alternative to the \"gold standard\" for PNI treatment.</p>","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"777-782"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179252/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Application of three-dimensional reconstruction technology in preoperative planning of anterolateral thigh flap transplantation].","authors":"Zhipeng Wu, Jian Ding, Xinglong Chen, Mingming Chen, Zipu Hong, Hede Yan","doi":"10.7507/1002-1892.202504035","DOIUrl":"10.7507/1002-1892.202504035","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the application of three-dimensional (3D) reconstruction technology in preoperative planning for anterolateral thigh flap transplantation.</p><p><strong>Methods: </strong>A retrospective analysis was performed on the clinical data of 11 patients with skin and soft tissue defects treated with free anterolateral thigh flap transplantation between January 2022 and January 2024, who met the selection criteria. There were 8 males and 3 females, aged 34-70 years (mean, 50.8 years). Causes of injury included traffic accidents (4 cases), machine trauma (3 cases), heavy object crush injury (3 cases), and tumor (1 case). The time from injury to flap repair ranged from 7 to 35 days (mean, 23 days). Preoperatively, the patients' CT angiography images were imported into Mimics21.0 software. Through the software's segmentation, editing, and reconstruction functions, 3D visualization and measurement of the vascular pedicle, perforators, wound size, and morphology were performed to plan the flap harvest area, contour, vascular pedicle length, and anastomosis site, guiding the implementation of flap transplantation.</p><p><strong>Results: </strong>The length of the vascular pedicle needed by the recipient site was (9.1±0.9) cm, and the maximum length of vascular pedicle in the donor area was (10.6±0.6) cm, with a significant difference ( <i>t</i>=4.230, <i>P</i><0.001). The operation time ranged from 220 to 600 minutes (mean, 361.9 minutes). One patient had poor wound healing at the recipient site, which healed after dressing changes. All 11 flaps survived well without necrosis. All patients were followed up 6-19 months (mean, 11 months). Four flaps showed bulkiness and underwent secondary debulking; the remaining flaps had good contour and soft texture. The donor sites healed well, with no sensory disturbance around the incision or complications such as walking impairment.</p><p><strong>Conclusion: </strong>Preoperative planning using CT angiography data and 3D reconstruction software can effectively determine the flap area, contour, required vascular pedicle length, anastomosis site, and whether vascular grafting is needed, thereby guiding the successful execution of anterolateral thigh flap transplantation.</p>","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"748-753"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179242/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research progress in biomechanics of different fixation methods for medial opening-wedge high tibial osteotomy].","authors":"Hongyun Shao, Qida Duan, Ning Luo, Fuyang Wang, Liangliang Cheng, Jiawei Ying, Dewei Zhao","doi":"10.7507/1002-1892.202504010","DOIUrl":"10.7507/1002-1892.202504010","url":null,"abstract":"<p><strong>Objective: </strong>To summarize the biomechanical research progress on different fixation methods in medial opening-wedge high tibial osteotomy (MOWHTO) and provide references for selecting appropriate fixation methods in clinical applications of MOWHTO for treating knee osteoarthritis (KOA).</p><p><strong>Methods: </strong>Recent domestic and international literature on the biomechanical studies of MOWHTO fixation methods was reviewed to analyze the characteristics and biomechanical performance of various fixation techniques.</p><p><strong>Results: </strong>The medial-specific osteotomy plate system has become the mainstream due to its high stiffness and stability, but issues such as soft tissue irritation and stress shielding remain. The use of filler blocks significantly enhances fixation stability and promotes bone healing when the osteotomy gap is large, reducing axial displacement by 73%-76% and decreasing plate stress by 90%. Auxiliary screws improve axial and torsional stability, particularly in cases with large correction angles, effectively preventing lateral hinge fractures. Alternative fixation methods like external fixators hold unique clinical value by minimizing soft tissue irritation and allowing postoperative adjustment.</p><p><strong>Conclusion: </strong>There is currently no unified standard for selecting MOWHTO fixation methods. Clinical decisions should comprehensively consider factors such as bone quality, correction angle, and postoperative rehabilitation needs.</p>","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"769-776"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179256/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Comparative study on implantation safety and stability of S ₁ and S ₂ sacral alar-iliac screws for sacroiliac joint fixation].","authors":"Qun Chen, Feng Ji, Qudong Yin, Dong Li, Xiaofei Han","doi":"10.7507/1002-1892.202503041","DOIUrl":"10.7507/1002-1892.202503041","url":null,"abstract":"<p><strong>Objective: </strong>To explore the differences in the implantation safety and stability of a S ₁ alar-iliac screw (S1AIS) or S2AIS for sacroiliac joint fixation, providing reference for selecting appropriate internal fixation in clinical practice.</p><p><strong>Methods: </strong>Patients who underwent pelvic CT examination between January 2024 and December 2024 were selected. CT data from 80 patients with normal pelvic structure who met the selection criteria were included in a 1∶1 male to female ratio. CT digital reconstruction technology was used to measure the transverse and longitudinal diameters of the S1AIS and S2AIS insertable ranges, as well as the length, width, and sacral side length of the screw trajectory. The pelvic CT data from 30 patients were randomly selected based on a 1∶1 male to female ratio for three-dimensional (3D) printing of pelvic samples. The S1AIS/S2AIS with a diameter of 6.5 mm and 8.0 mm were implanted at the optimal entry/exit points on the left and right sides, respectively, to observe the perforation of the screw trajectory. The pelvic CT data from 1 patient was randomly selected for 3D printing of 10 pelvic samples to simulate Tile C2 fracture. They were divided into S1AIS group ( <i>n</i>=5) and S2AIS group ( <i>n</i>=5), with one S1AIS and one S2AIS fixation used for posterior sacroiliac joint separation, and the specimen stiffness and maximum load were measured by using an electric tension torsion dual axis universal mechanical tester.</p><p><strong>Results: </strong>The anatomical parameter measurement showed that there was no significant difference in the length and width of the screw trajectory between S1AIS and S2AIS ( <i>P</i>>0.05), but the transverse and longitudinal diameters of the insertable ranges, as well as the sacral side length of the screw trajectory, were all greater than those of S2AIS, with significant differences ( <i>P</i><0.05). After simulating the implantation of S1AIS and S2AIS with a diameter of 6.5 mm in pelvic specimens, no screw penetration was observed. Both S1AIS and S2AIS with a diameter of 8.0 mm showed screw penetration, with S2AIS having a higher incidence of posterior lateral sacral cortical penetration (46.7%) than S1AIS (3.3%) ( <i>P</i><0.05). The biomechanical test showed that the stiffness and maximum load of S2AIS were significantly lower than those of S1AIS ( <i>P</i><0.05).</p><p><strong>Conclusion: </strong>As a method to fix the sacroiliac joint, the S1AIS has a larger insertable range, a longer sacral side length of the screw trajectory, a lower incidence of posterior lateral cortical rupture of the sacrum, and a greater fixation strength than S2AIS. Therefore, the implantation safety and fixation stability of the S1AIS are superior to S2AIS, and a diameter less than 8.0 mm screws should be selected as S2AIS for Chinese people.</p>","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"723-728"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179253/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Effect of removing microglia from spinal cord on nerve repair after spinal cord injury in mice].","authors":"Qi Jiang, Chao Qi, Yuerong Sun, Shiyuan Xue, Xinyi Wei, Haitao Fu","doi":"10.7507/1002-1892.202503099","DOIUrl":"10.7507/1002-1892.202503099","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Objective: &lt;/strong&gt;To investigate the effects of removing microglia from spinal cord on nerve repair and functional recovery after spinal cord injury (SCI) in mice.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;Thirty-nine 6-week-old female C57BL/6 mice were randomly divided into control group ( &lt;i&gt;n&lt;/i&gt;=12), SCI group ( &lt;i&gt;n&lt;/i&gt;=12), and PLX3397+SCI group ( &lt;i&gt;n&lt;/i&gt;=15). The PLX3397+SCI group received continuous feeding of PLX3397, a colony-stimulating factor 1 receptor inhibitor, while the other two groups were fed a standard diet. After 14 days, both the SCI group and the PLX3397+SCI group were tested for ionized calcium binding adapter molecule 1 (Iba1) to confirm that the PLX3397+SCI group had completely depleted the spinal cord microglia. The SCI model was then prepared by clamping the spinal cord in both the SCI group and the PLX3397+SCI group, while the control group underwent laminectomy. Preoperatively and at 1, 3, 7, 14, 21, and 28 days postoperatively, the Basso Mouse Scale (BMS) was used to assess the hind limb function of mice in each group. At 28 days, a footprint test was conducted to observe the gait of the mice. After SCI, spinal cord tissue from the injury site was taken, and Iba1 immunofluorescence staining was performed at 7 days to observe the aggregation and proliferation of microglia in the spinal cord. HE staining was used to observe the formation of glial scars at the injury site at 28 days; glial fibrillary acidic protein (GFAP) immunofluorescence staining was applied to astrocytes to assess the extent of the injured area; neuronal nuclei antigen (NeuN) immunofluorescence staining was used to evaluate neuronal survival. And 5-hydroxytryptamine (5-HT) immunofluorescence staining was performed to assess axonal survival at 60 days.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;All mice survived until the end of the experiment. Immunofluorescence staining revealed that the microglia in the spinal cord of the PLX3397+SCI group decreased by more than 95% compared to the control group after 14 days of continuous feeding with PLX3397 ( &lt;i&gt;P&lt;/i&gt;&lt;0.05). Compared to the control group, the BMS scores in the PLX3397+SCI group and the SCI group significantly decreased at different time points after SCI ( &lt;i&gt;P&lt;/i&gt;&lt;0.05). Moreover, the PLX3397+SCI group showed a further decrease in BMS scores compared to the SCI group, and exhibited a dragging gait. The differences between the two groups were significant at 14, 21, and 28 days ( &lt;i&gt;P&lt;/i&gt;&lt;0.05). HE staining at 28 days revealed that the SCI group had formed a well-defined and dense gliotic scar, while the PLX3397+SCI group also developed a gliotic scar, but with a more blurred and loose boundary. Immunofluorescence staining revealed that the number of microglia near the injury center at 7 days increased in the SCI group than in the control group, but the difference between groups was not significant ( &lt;i&gt;P&lt;/i&gt;&gt;0.05). In contrast, the PLX3397+SCI group showed a significant reduction in microglia compared","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"754-761"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179246/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Feasibility study on biomechanical indicators as supplementary evaluation to Musculoskeletal Tumor Society Scoring System for amputee patients].","authors":"Lingjie Zeng, Xuanhong He, Minxun Lu, Yong Nie, Xiangdong Zhu, Chongqi Tu","doi":"10.7507/1002-1892.202502032","DOIUrl":"10.7507/1002-1892.202502032","url":null,"abstract":"<p><strong>Objective: </strong>To explore the feasibility of using biomechanical indicators as supplementary evaluation to the Musculoskeletal Tumor Society Scoring System (MSTS) for amputee patients.</p><p><strong>Methods: </strong>Twenty-four patients who underwent hemipelvectomy between September 2018 and January 2025 were enrolled. There were 15 males and 9 females with an average age of 61.4 years (range, 45-76 years). Participants performed gait tests at self-selected speeds using three assistive devices (prosthesis, single crutch, and double crutches). Motion data were analyzed using a customized OpenSim model. Biomechanical indicators of the intact limb exhibiting common characteristics were screened through correlation and sensitivity analyses. Test-retest reliability [interclass correlation coefficient (ICC)] of selected parameters was assessed to evaluate their potential as MSTS score supplements.</p><p><strong>Results: </strong>All biomechanical indicators showed significant positive correlations with MSTS scores across assistive devices ( <i>P</i><0.05). Seven indicators demonstrated |Pearson correlation coefficients|>0.8, including walking speed, maximum hip angle, maximum hip moment, peak hip flexion moment, peak hip extension moment, hip flexion impulse, and hip extension impulse. Among these, maximum hip moment, hip flexion impulse, and hip extension impulse exhibited significant between-group differences in adjacent MSTS levels ( <i>P</i><0.05), indicating high sensitivity, along with excellent test-retest reliability (ICC>0.74, <i>P</i><0.01).</p><p><strong>Conclusion: </strong>Biomechanical indicators statistically qualify as potential supplements to MSTS scoring. Maximum hip moment, hip flexion impulse, and hip extension impulse demonstrate particularly high sensitivity to MSTS score variations.</p>","PeriodicalId":23979,"journal":{"name":"中国修复重建外科杂志","volume":"39 6","pages":"729-734"},"PeriodicalIF":0.0,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12179239/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}