腱下囊
Bursa subtendinea
- 拉丁语近义词: Bursa synovialis subtendinea
定义
腱下囊是一种衬有滑膜、内含液体的囊状结构,位于肌腱下方、深面骨骼或关节囊上方。其主要功能是减少摩擦、促进肌腱在运动过程中的平滑滑动,尤其是在肌腱经过骨性隆起处时。
腱下囊有助于保护肌腱免受机械应力,并在反复运动中分散压力。
示例
肩关节冈上肌腱深面的肩峰下-三角肌下囊,以及股骨大转子处臀中肌腱和臀小肌腱深面的臀中肌腱下囊和臀小肌腱下囊。
參考資料
Kennedy MS, Nicholson HD, Woodley SJ. The morphology of the subacromial and related shoulder bursae. An anatomical and histological study. J Anat. 2022 May;240(5):941-958.
Pfirrmann CW, Chung CB, Theumann NH, Trudell DJ, Resnick D. Greater trochanter of the hip: attachment of the abductor mechanism and a complex of three bursae--MR imaging and MR bursography in cadavers and MR imaging in asymptomatic volunteers. Radiology. 2001 Nov;221(2):469-77.