桡侧腕伸肌腱鞘
Vagina tendinum extensorum radialium carpi
- 拉丁语近义词: Vagina tendinum musculorum extensorum carpi radialium
定义
桡侧腕长伸肌和桡侧腕短伸肌的肌腱各自包裹于独立的滑膜鞘内,向下走行穿过腕背侧第二骨纤维管,位于伸肌支持带深面。它们沿桡骨茎突后面走行,位于外侧的拇长展肌和拇短伸肌肌腱(第一骨纤维管)与内侧的拇长伸肌肌腱(第三骨纤维管)之间。
肌腱鞘自腕关节近侧稍上方延伸至第二、三掌骨底,即肌腱止点所在处。这些腱鞘使肌腱能够在桡骨背面顺畅滑动,减少腕关节背伸及桡偏运动时的摩擦。
请注意,伸肌支持带向桡骨和尺骨发出纤维隔,将腕背侧分隔为六个骨纤维管,每个骨纤维管内含特定的伸肌肌腱,各自包裹于其独立的滑膜鞘中。桡侧腕长伸肌和桡侧腕短伸肌的肌腱位于腕背侧第二骨纤维管,紧邻拇长伸肌肌腱的外侧。
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).