[The role of the retinaculum extensorum in the stability of the wrist (author's transl)].
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).
D001172:Arthritis, Rheumatoid / Q000503:physiopathology; D002348:Carpal Bones / Q000502:physiology*; D006801:Humans; D008023:Ligaments, Articular / Q000502:physiology*; D009068:Movement; D009119:Muscle Contraction
Le rôle du ligament annulaire postérieur du carpe, dans la stabilité du poignet.