Patent ID: 7182787

Claim:
A Trapezal or trapezo-metacarpal implant comprising a stem terminating in a head, the stem and the head being adapted respectively to be inserted in the metacarpus of the thumb and to be disposed in a space obtained particularly by removing at least a portion of the trapezium, the surface of the head being constituted by a base connected to the stem and adapted to rest on the proximal end of the metacarpus, a distal surface portion opposite the base and serving as a contact and friction surface, and a connecting portion connecting the base and the distal surface portion of the head, wherein the distal surface portion of the head is inclined relative to a longitudinal axis of the stem by a predetermined angle other than zero, such that, when the stem is mounted straight in the metacarpus, the distal surface portion of the head can be located in varus, and wherein the base of the head is inclined relative to the longitudinal axis of the stem in the same direction as the distal surface portion, and by an angle equal to said predetermined angle.