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Journal of Bone and Joint Surgery - British Volume, Vol 86-B, Issue 1, 34-38.
doi: 10.1302/0301-620X.86B1.13402  
Copyright © 2004 by British Editorial Society of Bone and Joint Surgery
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Premature wear and osteolysis in an HA-coated, uncemented total hip arthroplasty

P. Duffy, FRCS (Ed), Specialist Registrar in Orthopaedics; J. L. Sher, FRCS, Consultant Orthopaedic Surgeon; and P. F. Partington, FRCS (Orth), Consultant Orthopaedic Surgeon

Wansbeck General Hospital, Woodhorn Lane, Ashington, Northumberland NE63 9JJ, UK.

Correspondence should be sent to Mr P. F. Partington.

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 periacetabular 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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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General