Khaledpour C, Schindelmeiser J
Anatomical Institute, Johannes Gutenberg-University Mainz, Germany.
J Anat. 1994 Feb;184 ( Pt 1)(Pt 1):161-3.
The description of a bilaterally well developed, bicipital and bipennate accessory extensor carpi radialis muscle is reported. The muscle arose between the origins of the long and short radial carpal extensor muscles and inserted by 2 tendons into the 1st 2 metacarpal bones. The ulnar tendinous insertion was simultaneously the origin of abductor pollicis brevis. Both heads of the accessory extensor carpi radialis muscle were innervated by a branch of the deep branch of the radial nerve. The present observation supplements our knowledge on variations in the antebrachial and carpal regions, which are important in hand surgery.
报道了一例双侧发育良好的、双头双羽状桡侧腕伸肌副肌。该肌肉起于桡侧腕长伸肌和桡侧腕短伸肌起点之间，通过2条肌腱止于第1、2掌骨。尺侧腱性附着点同时是拇短展肌的起点。桡侧腕伸肌副肌的两个头均由桡神经深支的一个分支支配。本观察补充了我们对前臂和腕部区域变异的认识，这些变异在手部手术中很重要。
