Bilateral Congenitally Absent Trapezius Musculature and Anomalous Scapuloclavicular Accessory Muscle: A Case Report.

Q4 Medicine

JBJS case connector Pub Date : 2026-08-11 eCollection Date: 2026-07-01 DOI:10.2106/JBJS.CC.26.00162

Naomi Kelley, William Curtis, Nathan T Morrell

引用次数: 0

Abstract

Case: An otherwise healthy 10-year-old boy presented with severe bilateral shoulder dysfunction because of lateral scapular winging. He underwent bilateral modified Eden-Lange tendon transfers, resulting in near-normal restoration of shoulder range of motion at the 1-year follow-up. Intraoperatively, he was found to have bilateral absent trapezial muscles and an anomalous scapuloclavicular muscle spanning from the superomedial scapula to the posterolateral clavicle.

Conclusion: This case represents the only known report of bilateral absent trapezius muscles without involvement of other trunk musculature or congenital abnormalities. In addition, the patient exhibited a previously unidentified anomalous muscle.

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双侧先天性斜方肌缺失及肩锁副肌异常1例。

病例：一名健康的10岁男孩，因侧肩胛骨翅而出现严重的双侧肩功能障碍。患者接受了双侧改良的Eden-Lange肌腱转移，随访1年，肩关节活动范围恢复接近正常。术中发现患者双侧斜肌缺失，肩胛骨上内侧至锁骨后外侧的肩胛锁骨肌异常。结论：本病例是唯一已知的双侧斜方肌缺失的病例，没有累及其他躯干肌肉或先天性异常。此外，患者还表现出先前未发现的异常肌肉。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

JBJS case connector Medicine-Medicine (all)

CiteScore

0.60

自引率

0.00%

发文量

319

期刊介绍： JBJS Case Connector helps improve patient care by providing the medical community with a journal that harnesses technology to provide information tools for discovery and reporting of unusual musculoskeletal problems, findings, treatment, and outcomes. Co-edited by Thomas W. Bauer, MD, PhD, and Ronald W. Lindsey, MD, JBJS Case Connector assists orthopaedic surgeons in the search for precedents, connections, and trends in their efforts to improve patient care. Using this unique journal, surgeons can find the commonalities between cases, benefit from the experience of their peers, and filter case information by many important variables in order to provide the best possible care for orthopaedic patients. This cross-referenced online journal includes thousands of orthopaedic case reports. It compiles symptoms, conditions, and demographic details to empower surgeons to find cases similar to theirs. Surgeons can mine the database to reveal emerging trends and identify patterns, distinguishing between truly rare cases and repeated, related single instances of a larger problem. The JBJS Case Connector Image Quiz feature provides interactive quizzes based on images from content published by JBJS and includes a discussion area for further exploration of ideas and concepts. The JBJS Image Quiz app for iPad and iPhone is available in the App Store. Contributions to JBJS Case Connector are welcomed from anywhere in the world and are considered on their merits. Articles must be written in English and should be submitted as outlined in the Instructions to Authors. All authors must abide by the JBJS ethics policies and all submissions to JBJS Case Connector are covered by the JBJS embargo policy.