| 摘要 |
The presented invention is 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 spherical shell. The presented implant consists of a metallic shell (1) with a polished hemispherical outer surface and an inner hemispherical concave surface, which possesses a trunnion (2) with a thread (4) and thin meridian fins (3) and 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 (5), which drills the femoral head and neck and exits the greater trochanter. The wire attaches proximally to the thread (4) of the trunnion (2) of the shell and distally to a nut-washer combination (6), by the tightening of which establishment of preload is achieved. |
