Premature wear and osteolysis in an HA-coated, uncemented total hip arthroplasty.
The ABG I cementless hip prosthesis has demonstrated unacceptably high rates of wear and osteolysis in our patients. We performed a retrospective study of 97 hips implanted between 1992 and 1998. Radiographic analysis revealed high rates of wear of the polyethylene liner with marked peri-acetabular osteolysis. Clinical examination indicated that many of these patients were initially asymptomatic. Wear-related problems have required ten hips to be revised and a furher 13 are awaiting revision. This gives a failure rate of 24% at a mean follow-up of 69 months. Contributing factors are likely to include poor wear characteristics of the polyethylene liners which were gamma irradiated in air, and increased wear debris caused by a poor fit of the polyethylene liner within the shell. We believe that all ABG I implants should be immediately reviewed and remain under careful, long-term follow-up.
Duffy
P
P
Wansbeck General Hospital, Woodhorn Lane, Ashington, Northumberland NE63 9JJ, UK.
Sher
J L
JL
Partington
P F
PF
D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000601:surgery; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D005260:Female; D005500:Follow-Up Studies; D006620:Hip Fractures / Q000601:surgery; D006801:Humans; D006882:Hydroxyapatites; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D010014:Osteolysis / Q000209:etiology*; D011475:Prosthesis Failure; D012086:Reoperation
D006882:Hydroxyapatites; C475044:hydroxyapatite cement