PROSTHETIC HIP IMPLANTS

摘要

Prosthetic hip stems (20, 70, 90, 100, 110, 130, 150, 200, 210) and acetabular cups (160, 180, 190) for use in prosthetic hip joints. The hip stem may include a core (36) having a stem portion (22, 72, 112, 135) and a neck portion (24, 80, 104, 120), a polymer matrix layer (38) substantially covering the stem portion of the core, and a porous metal layer (40) substantially covering the polymer matrix layer. The polymer matrix layer connects the core and the porous metal layer and provides a stiffness for the hip stem which more closely mimics the stiffness of bone than do known hip stems. The hip stems and acetabular cups additionally include a number of improvements adapted for more optimized results with certain types of patient anatomy, such as the anatomy of female patients, for example.