S. Cavdar et al., AN UNUSUAL VARIATION OF EXTENSOR DIGITORUM BREVIS MANUS - A CASE-REPORT AND LITERATURE-REVIEW, The Journal of hand surgery, 23A(1), 1998, pp. 173-177
An unusual variation of the extensor digitorum brevis manus in a male
cadaver is presented. The band-shaped muscle was located at the ulnar
side of the hand between the fourth and fifth extensors. It originated
from the deep carpal fascia and inserted to the extensor tendons of t
he fourth and fifth fingers with a tendon and a slip, respectively. Th
e origin, insertion, and location of the muscle differ from those prev
iously reported: with these anatomic features, the muscle variation ca
nnot be placed into the current classifications. The phylogenetic and
ontogenetic implications of the muscle are reviewed. Copyright (C) 199
8 by the American Society for Surgery of the Hand.