Premature wear and osteolysis in an HA-coated, uncemented total hip arthroplasty

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Abstract

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.

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Duffy, P., Sher, J. L., & Partington, P. F. (2004). Premature wear and osteolysis in an HA-coated, uncemented total hip arthroplasty. Journal of Bone and Joint Surgery - Series B, 86(1), 34–38. https://doi.org/10.1302/0301-620x.86b1.13402

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