Abstract
Aim: The purpose of this study is to investigate the outcomes of bone conserving hip replacements: the Thrust Plate Prosthesis (TPP) and Buechel Pappas (BP) Resurfacing. Method:We have performed total hip replacements in 2 consecutive groups of young patients with osteoarthritis of the hips. In group 1 (TPP group) consists of 103 hips with the thrust plate prosthesis, HA coating and metal on metal bearings (1995~2000). The group 2 (BP group) consists of 25 hips with Buechel Pappas resurfacing with a thin polyethylene liner, ethylene oxide sterilized, and a nitrided titanium bearing surface (1989~1994). The outcomes were evaluated by complication rates, survival, standardized X-rays, a self-assessment satisfaction score, a Harris Hip Score and a Merle dñAubigne score. Results: In group 1, one hip had revision due to infection, and one following traumatic intertrochanteric fracture. No osteolysis and gross migration is seen In group 2, 17 of 25 hips had revision due to osteolysis or femoral neck fracture (mean 4y10m). Conclusion: The Thrust Plate Prosthesis has good outcome at 1 to 6 years follow-up. Buechel pappas resurfacing replacement had poor outcome and almost all cases had osteolysis, which are thought to be due to polyethylene particles.
Theses abstracts were prepared by Professor Dr. Frantz Langlais. Correspondence should be addressed to him at EFORT Central Office, Freihofstrasse 22, CH-8700 Küsnacht, Switzerland.
