Implantable device for the interposition of a joint or refection phalangeal metacarpophalangeal and surgical kit comprising such a device.

摘要

The implantable device relates to the repair of a hinge phalangeal or metacarpophalangeal - phalangeal with a deficiency of cartilage. It comprises a fixing pin, for fixing it in one of the bones of the joint, which is surmounted by a support base is able to replace the defective cartilage. The fixing pin (2) is formed of a head (4) and a stem (5). At least the head (4) and the support base (3) are of different materials, that of the support base (3) being more deformable under stress than that of the head (4). The support base (3) has a central opening whose configuration and that of the head (4) are determined so that the support base (3), during its fitting on the head, is deformed so as to adopt a concave curvature of radius r1.