Clinical and radiological results of the stemmed Mc Minn cup in hip revision surgery.

Results with the stemmed McMinn acetabular cup in revision total hip arthroplasty with acetabular defects have been scarcely reported. We report our experience and radiological outcome with the stemmed cup in three Dutch orthopaedic departments. Twenty four patients with a median age of 69 years were operated between 1999 and 2005. Immediate postoperative radiographs were evaluated and compared with those at follow-up. The center of rotation was restored in 75% of the hips. Adequate alignment was seen in 71%. The mechanical failure rate was 38%. The cup was removed because of sepsis in three patients. Two patients had a dislocation (1 chronic). After 5 years, definite radiological loosening of the prosthesis was noted in 4 patients.