The role of the retinaculum extensorum in the stability of the wrist
Tubiana, R.; Fahrer, M.
Revue de Chirurgie Orthopedique et Reparatrice de l'Appareil Moteur 67(3): 231-234
1981
ISSN/ISBN: 0035-1040 PMID: 6456498 Document Number: 177554
The carpus is attached to the radius mainly by two radiocarpal ligaments, anterior and posterior. These ligaments are not symmetrical and cannot oppose on the ulnar side the action of the longitudinal force of the extrinsic muscles of the fingers. This force is directed by the volar and ulnar inclination of the radial articular surface. This force initiates a movement of supination of the carpus and of anterior subluxation. The main fibrous structure which may oppose this force is the posterior annular ligament (retinaculum extensorum).