What happens to femoral neck bone mineral density after hip resurfacing surgery?
The major advantage of hip resurfacing is the decreased amount of bone resection compared with a standard total hip replacement. Fracture of the femoral neck is the most common early complication and poor bone quality is a major risk factor. We undertook a prospective consecutive case control study examining the effect of bone mineral density changes in patients undergoing hip resurfacing surgery. A total of 423 patients were recruited with a mean age of 54 years (24 to 87). Recruitment for this study was dependent on pre-operative bilateral femoral bone mineral density results not being osteoporotic. The operated and non-operated hips were assessed. Bone mineral density studies were repeated over a two-year period. The results showed no significant deterioration in the bone mineral density in the superolateral region in the femoral neck, during that period. These findings were in the presence of a markedly increased level of physical activity, as measured by the short-form 36 health survey physical function score.
University of Technology, Sydney, Faculty of Science, P. O. Box 123, Broadway, 2007 New South Wales, Australia.
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Cordingley
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L
Kohan
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Ben-Nissan
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D015519:Bone Density / Q000502:physiology*; D016022:Case-Control Studies; D005260:Female; D005272:Femur Neck / Q000000981:diagnostic imaging / Q000503:physiopathology*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D011184:Postoperative Period; D011859:Radiography; D055815:Young Adult