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O2002 MANAGEMENT OF RIM SUPPORTIVE DEFECTS WITH THE MORSCHER PRESS-FIT CUP IN ACETABULAR REVISIONS



Abstract

Introduction: The operation method selected for acetabular revisions depends on the type of deþciency; Type 1: contained cavitary; the acetabular rim is preserved and thus supportive. Type 2: non-contained deþciencies; the acetabular rim and the peripheral zones are non- supportive defects. In non-contained, rim non-supportive defects acetabular reinforcement rings are used as a rule. Material and methods: Between July 1988 and December 1997 465 acetabular revisions with 229 Reinforcement Rings and 236 Press- Fit Cups (4 bilaterally) were performed. A 7.5 (5.0–10.8) year clinical and radiological follow-up of the Press-Fit Cup inserted in 130 women and 102 men was effected. Mean age at revisions surgery was 70 in women and 73 in men. 39 patients (17%) died without needing a re-revision, and 17 (7%) could only be interviewed by phone. One patient was lost to follow-up. Of the remaining 175 patients (75%) with 179 hips (76%) were available for complete evaluation. Results: The clinical results (according to Merle dñAubignŽ) was excellent and good in 82% 143 pts), moderate in 17% (30 pts) and poor in 1% (2 pts). 22 (9%) reinterventions were noted during the observation period: 12 for dislocations, 5 for aseptic stem loosening, 1 for septic loosening, 2 for secondary periprosthetic fractures and 2 for removal of heterotopic ossiþcations. Conclusions: No Press-Fit Cup had to be re-revised for aseptic loosening. Reconstruction for contained, rim supportive defects with the Press-Fit Cup provides excellent results, comparable to those of primary arthroplasties.

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.