Abstract
Thanks to its high primary stability, the concept of threaded cups has gained wide acceptance. The aim of this study is to report the long-term results of the Wagner conical screw cup. Between January 1993 and December 1994, 212 conical screw cup were implanted; 118 implants were clinically and radiographically followed up after a mean of 12.1 years. The Merle d'Aubigné score improved from a preoperative mean of 8.8 to 16.6 postoperatively. Four revisions were performed for heterotopic ossification. Three revisions were done to treat deep infection. Two isolated cup revisions and three more complete total hip joint revisions were required due to aseptic loosening. The overall survival rate at 12 years in this study was 93.2% (110/118); for aseptic loosening alone it was 95.8% (113/118). The Wagner conical screw cup by yields very good long-term results.
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