Case Reports in Orthopedics最新文献_第6页

Through-Knee Amputation Following Total Knee Arthroplasty With Retention of Femoral Component: A Case Report. 全膝关节置换术后经膝截肢并保留股骨部分：1例报告。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-07-14 eCollection Date: 2026-01-01 DOI: 10.1155/cro/4486143

Katie Hutchinson, Alex Trompeter

{"title":"Through-Knee Amputation Following Total Knee Arthroplasty With Retention of Femoral Component: A Case Report.","authors":"Katie Hutchinson, Alex Trompeter","doi":"10.1155/cro/4486143","DOIUrl":"10.1155/cro/4486143","url":null,"abstract":"Introduction: Extensor mechanism disruption following total knee arthroplasty (TKA) is an uncommon but serious complication. Surgical management is often complex, particularly in cases of failed reconstruction or persistent instability, and may ultimately necessitate amputation.Case presentation: We report a 79-year-old female with a history of TKA and prior patellar tendon repair, who developed a fixed flexion deformity and periprosthetic knee dislocation. Given the failure of conventional interventions and compromised soft tissues, she underwent a through-knee amputation. The femoral component of the prosthesis was deliberately retained, a strategy that, to our knowledge, has not previously been described in the literature. Postoperatively, the patient experienced significant pain relief, and the residual limb was suitable for prosthetic fitting, although she elected for wheelchair-based mobility.Discussion: Retention of the femoral component during through-knee amputation presents unique surgical challenges but may offer functional and biomechanical advantages, including a stable, end-bearing residual limb and preservation of limb length. This case highlights the feasibility, rationale, and potential benefits of femoral component retention in the context of complex post-TKA limb salvage.Conclusion: Through-knee amputation with retention of the femoral component represents a novel salvage approach in selected patients with failed TKA reconstruction, providing both anatomical and functional advantages while broadening the management strategies for complex knee arthroplasty complications.","PeriodicalId":30287,"journal":{"name":"Case Reports in Orthopedics","volume":"2026 ","pages":"4486143"},"PeriodicalIF":0.4,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13369288/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148457047","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}

引用次数: 0

Subchondral Insufficiency Fracture of the Knee Previously Diagnosed as Spontaneous Osteonecrosis: A Case Report With Histological Analysis. 膝关节软骨下不全性骨折先前诊断为自发性骨坏死：1例组织学分析报告。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-07-11 eCollection Date: 2026-01-01 DOI: 10.1155/cro/9109042

Pierangelo Za, Giuseppe Francesco Papalia, Fabrizio Russo, Francesco Luigi Gambaro, Rocco Papalia

{"title":"Subchondral Insufficiency Fracture of the Knee Previously Diagnosed as Spontaneous Osteonecrosis: A Case Report With Histological Analysis.","authors":"Pierangelo Za, Giuseppe Francesco Papalia, Fabrizio Russo, Francesco Luigi Gambaro, Rocco Papalia","doi":"10.1155/cro/9109042","DOIUrl":"10.1155/cro/9109042","url":null,"abstract":"Objectives: Spontaneous osteonecrosis of the knee (SPONK) shares clinical and imaging similarities with subchondral insufficiency fractures of the knee (SIFKs), leading to confusion in terminology and diagnosis.Case presentation: We reported the case of a patient with knee pain and a presumed diagnosis of SPONK based on clinical and imaging findings. X-rays showed subchondral bone collapse and marked subchondral sclerosis. MRI showed a subchondral fracture line with extensive bone marrow edema. The lesion was classified as Stage IV according to the Koshino radiographic classification and Stage IV based on the Sayyid classification for MRI findings. The patient underwent total knee arthroplasty, during which bone samples were collected and examined. Histological analysis revealed no osteonecrosis but rather subchondral stress fractures with associated bone callus formation, proliferation of chondrocyte clusters, increased osteoblastic activity, and bone marrow edema with mild fibrosis and chronic inflammation.Conclusion: This case report highlights the discrepancies between histological findings and the current classification of osteonecrosis of the knee, suggesting that the term \"osteonecrosis\" may be inappropriate in some cases. Greater attention should be given to the histological substrate of these pathologies to potentially refine the nomenclature and diagnostic criteria in the future.","PeriodicalId":30287,"journal":{"name":"Case Reports in Orthopedics","volume":"2026 ","pages":"9109042"},"PeriodicalIF":0.4,"publicationDate":"2026-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13355289/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148424865","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}

引用次数: 0

Treatment of Failed Patella ORIF With Novel Patella Tension Band Plate and Suture Construct: A Case Report. 新型髌骨张力带钢板及缝合结构治疗髌骨ORIF失败1例报告。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-07-11 eCollection Date: 2026-01-01 DOI: 10.1155/cro/6150955

Hrayr Basmajian, Cailan L Feingold, Eric H Lin, Ryan R Mayer, Christopher B Hayes, Nirav H Amin, Joseph N Liu

引用次数: 0

An Unrecognized Bifid Median Nerve in Revision Carpal Tunnel Release: Lessons for Surgical Exploration. 腕管复位释放术中未识别的双裂正中神经：手术探查的经验教训。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-07-03 eCollection Date: 2026-01-01 DOI: 10.1155/cro/9523047

Daniel Lynch, Tyler Small, Dyllan Epstein, Usmaan Zunnu Rain, Zakariah Mahmood

引用次数: 0

Bilateral Giant Cell Tumour of the Achilles Tendon Sheath: A Rare Case Managed with Peroneus Brevis Tendon Transfer. 双侧跟腱鞘巨细胞瘤：一例罕见的腓骨短肌腱转移治疗。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-07-02 eCollection Date: 2026-01-01 DOI: 10.1155/cro/4213959

Yasir Hidayat, Obaid Ur Rehman, Muhammad Mobushir, Osama Ijaz

引用次数: 0

Medial Meniscus Posterior Root Tears Associated With Medial Collateral Ligament Injury in Young and Middle-Aged Adults: A Report of Three Cases. 青壮年半月板后根撕裂合并内侧副韧带损伤3例报告。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-06-29 eCollection Date: 2026-01-01 DOI: 10.1155/cro/9938580

Goki Kamei, Ayaka Yamazato, Atsushi Takazawa, Hiroo Hiramatsu

{"title":"Medial Meniscus Posterior Root Tears Associated With Medial Collateral Ligament Injury in Young and Middle-Aged Adults: A Report of Three Cases.","authors":"Goki Kamei, Ayaka Yamazato, Atsushi Takazawa, Hiroo Hiramatsu","doi":"10.1155/cro/9938580","DOIUrl":"10.1155/cro/9938580","url":null,"abstract":"Medial meniscus posterior root tears (MMPRTs) are increasingly recognized as a significant cause of rapid medial compartment degeneration. Although commonly observed in middle-aged patients with degenerative changes, traumatic MMPRTs in younger individuals are uncommon and may be overlooked, particularly when occurring alongside medial collateral ligament (MCL) injuries. Herein, we report three cases of MMPRTs associated with Grades I-II MCL injuries in young to middle-aged adults. All patients sustained a valgus force during athletic activity and were initially diagnosed with isolated MCL injuries based on early magnetic resonance imaging (MRI). Upon referral to our institution, persistent medial joint pain prompted a repeat MRI, which revealed concomitant MMPRTs. Surgical repair was performed 3-4 months postinjury using circumferential fiber augmentation with either transtibial pullout or centralization techniques. Postoperative MRI at 6-12 months showed no progression of meniscal extrusion. Two patients returned to sports, and one discontinued follow-up due to pregnancy. These cases emphasize the importance of considering MMPRT in young patients presenting with MCL injuries. Early treatment is most important to avoid delayed diagnosis and prevent cartilage degeneration.","PeriodicalId":30287,"journal":{"name":"Case Reports in Orthopedics","volume":"2026 ","pages":"9938580"},"PeriodicalIF":0.4,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13312434/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148353854","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}

引用次数: 0

Total Hip Arthroplasty for Post-Traumatic Hip Arthritis in Chronic Pubic Diastasis: A Case Report. 全髋关节置换术治疗慢性耻骨分离性创伤后髋关节关节炎1例。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-06-27 eCollection Date: 2026-01-01 DOI: 10.1155/cro/8930297

Avtar Singh Kamboj, Abhijit Das, Babaji Sitaram Thorat, Arcot Reddy Vamsi Krishna, Kshitij Srivastav, Arshid H Wani, Prabhat Mittal

{"title":"Total Hip Arthroplasty for Post-Traumatic Hip Arthritis in Chronic Pubic Diastasis: A Case Report.","authors":"Avtar Singh Kamboj, Abhijit Das, Babaji Sitaram Thorat, Arcot Reddy Vamsi Krishna, Kshitij Srivastav, Arshid H Wani, Prabhat Mittal","doi":"10.1155/cro/8930297","DOIUrl":"10.1155/cro/8930297","url":null,"abstract":"Introduction: Total hip arthroplasty (THA) in the presence of chronic pubic diastasis is uncommon and technically demanding due to hemipelvic malrotation and abnormal acetabular orientation.Case presentation: A 41-year-old woman developed advanced post-traumatic hip osteoarthritis following fixation of an acetabular fracture and sacroiliac joint injury, complicated by a 90-mm chronic pubic diastasis. Preoperative imaging showed a vertically oriented, retroverted acetabulum with external hemipelvic rotation. THA was performed using a modified posterolateral approach with normalized imaging and landmark-based acetabular orientation. A press-fit uncemented acetabular component with a dual-mobility liner and a short uncemented femoral stem were implanted. The postoperative course was uneventful. The Harris Hip Score improved from 74 at 2 weeks to 93 at 12 weeks, and radiographs up to 2 years confirmed stable osseointegration.Conclusion: This case highlights technical strategies for performing THA in post-traumatic pubic diastasis with prior fixation, emphasizing functional pelvic normalization and reproducible landmark-based acetabular orientation. This report was prepared in accordance with CARE guidelines.","PeriodicalId":30287,"journal":{"name":"Case Reports in Orthopedics","volume":"2026 ","pages":"8930297"},"PeriodicalIF":0.4,"publicationDate":"2026-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13309802/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148346495","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}

引用次数: 0

Radiocarpal Dislocation With Isolated Ulnar Translocation: Case Report and Review of the Literature. 桡腕关节脱位伴孤立尺骨移位：病例报告及文献回顾。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-06-27 eCollection Date: 2026-01-01 DOI: 10.1155/cro/8733635

Maleka Ramji, Mieke Heyns, Emma Yanko, Farrah M K Yau

引用次数: 0

Histologically Verified Dupuytren's Disease in a 6-Year-Old: A Case Report and Literature Review. 组织学证实的6岁儿童Dupuytren病1例报告及文献复习。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-06-27 eCollection Date: 2026-01-01 DOI: 10.1155/cro/9692425

David Máška, Martin Vlach

引用次数: 0

Dedifferentiated Osteosarcoma of the Wrist With BCOR Sarcoma Component in a 22-Year-Old Patient: A Case Report. 22岁患者腕部去分化骨肉瘤伴BCOR肉瘤成分1例报告。

IF 0.4

Case Reports in Orthopedics Pub Date : 2026-06-25 eCollection Date: 2026-01-01 DOI: 10.1155/cro/9962833

Alba Hernandez-Guzman, Binyam Fentaw, Kassaye Firde, Shuanzeng Wei, Daniela Proca

{"title":"Dedifferentiated Osteosarcoma of the Wrist With BCOR Sarcoma Component in a 22-Year-Old Patient: A Case Report.","authors":"Alba Hernandez-Guzman, Binyam Fentaw, Kassaye Firde, Shuanzeng Wei, Daniela Proca","doi":"10.1155/cro/9962833","DOIUrl":"10.1155/cro/9962833","url":null,"abstract":"We report a unique case of a 22-year-old male with a progressively enlarging mass on the right thumb. Initial biopsies suggested a low-grade osteogenic tumor. Following partial amputation, gross examination revealed a well-circumscribed 3.7cm mass involving the metacarpal bone with soft tissue invasion. Histologically, the tumor displayed features of low-grade central osteosarcoma with areas transitioning to a round blue cell morphology resembling Ewing sarcoma. Comprehensive molecular testing-including next-generation sequencing (NGS) and cytogenomic microarray analysis (CMA)-identified amplifications of MDM2 and CDK4, hallmark alterations of low-grade osteosarcoma. Notably, a BCOR internal tandem duplication (ITD) was also detected. The final diagnosis was central low-grade osteosarcoma with dedifferentiation to BCOR-altered sarcoma. To our knowledge, this is the first reported case of osteosarcoma with BCOR sarcoma dedifferentiation occurring in the wrist of a young adult. BCOR ITD sarcomas have previously been described exclusively in nonappendicular soft tissues of infants and young children, without known association with osteosarcoma. This case highlights the diagnostic value of integrating NGS (DNA and RNA) and CMA in sarcomas with mixed or unusual histology. Such tools are essential for precise classification, prognostication, and consideration of targeted therapies in rare and histologically complex bone tumors.","PeriodicalId":30287,"journal":{"name":"Case Reports in Orthopedics","volume":"2026 ","pages":"9962833"},"PeriodicalIF":0.4,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13305323/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148346358","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}

引用次数: 0