Agee J M, Maher T R, Thompson M S
Hand Biomechanics Lab, Inc, Sacramento, CA 95825, USA.
J Hand Surg Am. 1998 Nov;23(6):998-1003. doi: 10.1016/S0363-5023(98)80006-3.
When a flexor digitorum superficialis tendon crossing a flexed or extended wrist has a load applied to it in excess of that applied to adjacent tendons, that tendon may translate across the carpal tunnel. In 6 cadaver specimens, each of the 9 carpal tunnel tendons was loaded with a baseline tension of 85 g and the moment arms of the flexor pollicis longus and the 4 flexor digitorum superficialis tendons were determined. Applying a higher 540-g load to individual flexor digitorum superficialis tendons and the flexor pollicis longus while loading the remaining tendons with the baseline 85-g tension significantly changed the moment arms from those measured under baseline load. The results demonstrated that tendons with applied differential loads in the carpal tunnel shift their positions, as revealed by their changing moment arms.
当一条跨越屈曲或伸展手腕的指浅屈肌腱所承受的负荷超过相邻肌腱时，该肌腱可能会在腕管内移位。在6个尸体标本中，对9条腕管肌腱中的每条施加85克的基线张力，并测定拇长屈肌和4条指浅屈肌腱的力臂。在对其余肌腱施加85克基线张力的同时，对单个指浅屈肌腱和拇长屈肌施加540克的更高负荷，显著改变了与基线负荷下测量的力臂。结果表明，腕管内施加不同负荷的肌腱会改变其位置，这通过其变化的力臂得以体现。
