Fakih R R, Thomas R, Mansour A
Royal Orthopaedic Hospital, Birmingham, United Kingdom.
Bull Hosp Jt Dis. 1997;56(2):115-6.
A case of a soft tissue mass of the dorsum of right hand in a 25-year-old, right-handed male is described. The preoperative diagnosis was a ganglion. On exploration the mass was found to be an atavistic extensor digitorum brevis manus replacing the extensor indicts proprius tendon. Division of the extensor retinaculum resulted in improvement of the symptoms. This muscle has been encountered rarely and few cases have been reported in the literature. It presents as a mass on the dorsum of the wrist. The symptoms are pain after activity. It is nearly always diagnosed as a ganglion preoperatively. The authors conclude that extensor digitorum brevis manus muscle should be included in the differential diagnosis of soft tissue tumors of dorsum of hand. Symptomatic patients are treated by division of the extensor retinaculum.
本文描述了一名25岁右利手男性右手背软组织肿块的病例。术前诊断为腱鞘囊肿。术中探查发现肿块是一块返祖的手部指短伸肌，替代了示指固有伸肌腱。切开伸肌支持带后症状改善。这种肌肉很少见，文献报道的病例也很少。它表现为腕背部的肿块。症状是活动后疼痛。术前几乎总是被诊断为腱鞘囊肿。作者得出结论，手部指短伸肌应纳入手背软组织肿瘤的鉴别诊断。有症状的患者通过切开伸肌支持带进行治疗。
