手の伸筋支帯とは
主な伸筋群の腱とは以下になる。(順番は母指側より)
以下は「 Wikipedia 」の解説文となる。
「 The extensor retinaculum ( dorsal carpal ligament, or posterior annular ligamen t) is an anatomical term for the thickened part of the antebrachial fascia that holds the tendons of the extensor muscles in place. It is located on the back of the forearm, just proximal to the hand. It is continuous with the palmar carpal ligament, which is located on the anterior side of the forearm.
It is a strong, fibrous band, extending obliquely downward and medialward across the back of the wrist, and consisting of part of the deep fascia of the back of the forearm, strengthened by the addition of some transverse fibers.
The extensor retinaculum is attached laterally to the lateral margin of the radius. However, it is not attached to the ulna, as the distance between these two bones varies with supination and pronation of the forearm. Instead the medial attachment is to the most medial of the carpal bones, the triquetrum (or triquetral bone) and pisiformis (or pisiform bone). The retinaculum is also attached in its passage across the wrist, to the ridges on the dorsal surface of the radius. 」
【 語 句 】
・ antebrachial fascia : 前腕筋膜 ・ palmar carpal ligament : 横手根靭帯のこと? ・ triquetrum : 三角骨
・ pisiformis : 豆状骨
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