拇短展肌腱
Tendo abductoris brevis pollicis
定义
拇短展肌的肌腱向远端走行,止于拇指近节指骨底的外侧面,并向拇指背侧腱膜(伸肌扩张部)的桡侧发出纤维。
其功能为拇指在腕掌关节和掌指关节处的主要外展肌,使拇指离开手掌(在垂直平面内运动),并在拇指对掌运动和精确抓握中发挥重要作用。
參考資料
Okwumabua E, Sinkler MA, Bordoni B. Anatomy, Shoulder and Upper Limb, Hand Muscles. [Updated 2023 Jul 24]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK537229/
Loss J, Li ZM. Biometry of thenar muscle origins on the flexor retinaculum. Clin Anat. 2020 Nov;33(8):1176-1180.