小指伸肌腱鞘
Vagina tendinis extensoris digiti minimi manus
- 拉丁语近义词: Vagina tendinis musculi extensoris digiti minimi manus
定义
小指伸肌腱鞘(EDM)是一种滑膜鞘,包裹小指伸肌(EDM)肌腱,该肌腱穿行于腕背侧第五骨纤维管,位于伸肌支持带深面,介于桡骨与尺骨之间。
腱鞘起自腕关节近侧稍上方,向远侧延伸至手背,于此处肌腱汇入小指伸肌腱帽。腱鞘使小指伸肌肌腱在伸小指运动过程中能够在其骨纤维管内顺畅滑动。
请注意,伸肌支持带向深面发出纤维隔,附着于深层的尺骨和桡骨,将腕背侧分隔为六个骨纤维管。每个骨纤维管内含有特定的伸肌肌腱,各自包裹于相应的滑膜鞘内;第五骨纤维管内仅含小指伸肌肌腱。
參考資料
Gray, H. (2016) Gray’s Anatomy: The Anatomical Basis of Clinical Practice. 41st edn. Edited by S. Standring. New York: Elsevier. Chapter 50: Wrist and hand, pp. 879.
Drake, R.L., Vogl, A.W. and Mitchell, A.W.M. (2009). ‘Chapter 7: Hand’ in Gray’s anatomy for Students. (2nd ed.) Philadelphia PA 19103-2899: Elsevier, pp. 757; Fig. 7.95.
MickeyMed. (n.d.). Extensor retinaculum of hand. Available at: https://www.mickeymed.com/article/extensorretinaculumofhand (Accessed: 7 January 2026).