Joint prosthesis, especially femoral prosthesis with self-blocking, wedge-shaped intramedullary stem

Abstract

Abstract The intramedullary anchoring stem (1) has two surfaces (6, 7) whose width gradually decreases in the direction of the free end (10) of the stem, and two curved edges (8, 9) which, at least in part, are intended to come into bearing contact with the wall of the medullary canal. The two curved edges (8, 9) of the intramedullary stem (1) have, at least in their bearing zone (AB, CD), a cross-section essentially in the form of an arc of a circle (S1 to S4 and T2 to T4) whose radius of curvature (R1 to R4) decreases in the direction of the free end of the stem (1). Preferably over the entire length of the stem (1), and at least in the bearing zones (AB, CD) of its curved edges (8, 9), the cross-section (S1 to S4 and T2 to T4) of the latter essentially has the form of an arc of a circle centered on the main axis (X) of the stem. <IMAGE>

Inventors

• 👤 Francis Henri Bréard

Bibliographic Details