IMPLEMENTATION FOR THE REVELOPMENT OF THE MAIN AREAS

摘要

An implant meant for hip resurfacing arthroplasty, a surgical reconstruction performed on patients with diseased hips, during which the surgeon replaces the surface of the femoral head with a polished metallic hemispherical shell is disclosed. The implant includes a metallic shell with a polished hemispherical outer surface and an inner hemispherical concave surface, from which extends a trunnion having internal threads and thin meridian fins. The inner concave surface of the implant is fully metal porous coated for osseointegration between implant and bone. The presented implant is fitted onto the appropriately contoured femoral head and is stabilized by means of a preload tension wire which drills the femoral head and neck and exits the greater trochanter. The wire attaches proximally to the thread of the trunnion of the shell and distally to a nut-washer combination, by the tightening of which establishment of preload is achieved.