Clinical results and survival of cementless revisions after 49 to 93 months

The results of 93 unselected consecutive cementless revision hip arthroplasties are reported. The patients' average age was 67 years, and the average follow-up was 62 months. The preoperative modified Merle d'Aubigne hip score averaged 9.7 (range 4-17) and the latest postoperative score was 13.7 (range 9-18). Twenty-five hips were rerevised and two await rerevision. Survivals of acetabular and femoral components at five years were 77 and 76% correspondingly. Radiographic examinations revealed migration in three acetabular components and seven femoral components (not yet rerevised). The results of the revisions with threaded acetabular components and with femoral components with madreporic or macrotextured surface were especially poor.