Arora J, Dave V, Kumar A, Mehta V, Nayyar A, Suri R K, Rath G, Das S
Department. of Anatomy. Vardhman Mahavir Medical College, New Delhi, India.
Clin Ter. 2013;164(1):31-3. doi: 10.7417/T.2013.1508.
The present article highlights an unusual combination of variations of the extensor digitorum and extensor carpi radialis brevis muscles in the dorsum of forearm and hand. The extensor carpi radialis brevis exhibited an accessory musculotendinous belly which inserted into the dorsal digital expansion of index finger. The extensor digitorum showed trifurcation into three distinct parts. Resultant multiple extensor tendon insertion pattern is reported upon highlighting the embryological basis and clinical importance. Knowledge of such anatomical variations adds upon the already existing information in literature and is also of profound interest to the clinician. Anatomical awareness of accessory multiple extensor tendons in the dorsum of hand is essential for successful management of extensor tendon injuries and graft transfer operations.
本文着重介绍了前臂和手部背侧指伸肌和桡侧腕短伸肌变异的一种不寻常组合。桡侧腕短伸肌表现出一个副肌腹，其插入食指的指背腱膜。指伸肌呈现出三分叉为三个不同部分。报告了由此产生的多个伸肌腱插入模式，突出了胚胎学基础和临床重要性。了解此类解剖变异增加了文献中已有的信息，对临床医生也具有深远的意义。手部背侧副多伸肌腱的解剖学认识对于成功处理伸肌腱损伤和移植物转移手术至关重要。
