Winston Benjamin A, Robinson Katlyn, Crawford Dennis
Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, Portland, OR, USA.
Case Rep Orthop. 2017;2017:1090245. doi: 10.1155/2017/1090245. Epub 2017 Jul 2.
The long head of the biceps tendon plays an important role in shoulder stability and its functional absence has been shown to contribute to glenohumeral instability. Congenital absence of the long head to the biceps tendon is rare, although described in the literature. We report the case of an 18-year-old recreational athlete with recurrent shoulder instability and congenital absence of the long head of the biceps tendon (which we term "monocept") and mild ipsilateral upper extremity hemimelia. The patient was treated surgically with posterior capsular shift with anterior Bankart repair without complication. At 16-month follow-up the patient has returned to recreational activity and has had an 11.37-point improvement in his DASH score. The authors suggest that patients with this uncommon anatomic anomaly and clinical shoulder instability are more likely to require surgical treatment.
肱二头肌长头肌腱在肩关节稳定性中起着重要作用，其功能缺失已被证明会导致盂肱关节不稳定。先天性肱二头肌长头肌腱缺失虽在文献中有描述，但较为罕见。我们报告一例18岁的休闲运动员病例，该患者反复出现肩关节不稳定，伴有先天性肱二头肌长头肌腱缺失（我们称之为“单头肌”）及同侧上肢轻度半侧发育不全。患者接受了后关节囊移位联合前Bankart修复手术，无并发症发生。在16个月的随访中，患者已恢复休闲活动，其DASH评分提高了11.37分。作者认为，患有这种罕见解剖异常且临床存在肩关节不稳定的患者更有可能需要手术治疗。
