Extensor indicis brevis: a rare anatomical variation.
We describe a rare anatomical variant, the extensor indicis brevis--a "short" index extensor originating from the ligament over the scaphoid bone. In our patient it presented as a tender mass. The knowledge of such anatomical variations is important in diagnosing dorsal hand masses and in planning tendon transfers.
D000293:Adolescent; D005260:Female; D006225:Hand / Q000601:surgery; D006228:Hand Deformities, Congenital; D006801:Humans; D009132:Muscles / Q000002:abnormalities*