More failures of uncemented acetabular screw-rings than of cemented polyethylene cups in total hip arthroplasties

Abstract 

The results of 498 total hip arthroplasties were prospectively studied. In 329 patients a cemented acetabular polyethylene cup was inserted. In 169 patients a threaded socket without cement was introduced. Follow-up ranged from 6 to 8 years and follow-up rate was over 90%. Of the 169 threaded sockets 8 required revision (4.7%), and 3 acetabular components were seen to be loose on X-ray. Of the cemented cups, only 2 (0.6%) required revision and none were considered loose on X-ray.

Résumé 

Présentation d’une étude prospective de 498 arthroplasties totale de la hanche. Dans 329 cas, une cupule en polyéthylène cimentée a été utilesée. Dans 169 cas, un cotyle sans ciment vissé a été utilisé. 90% des patients ont été suivis 6 à 8 ans. Parmi les 169 cupules vissées, 11 sont descellées et 8 ont dûêtre révisées (4,7%). Il n’y a que 2 descellements des cupules cimentées qui ont dûêtre révisés (0,6%).