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Higher dislocation rate
69%
3080/4449
Higher periprosthetic fracture rate
3%
112/4449
Increased serum metal ion levels
135/4449
Higher rates of osteonecrosis
5%
209/4449
Larger incision and surgical dissection
20%
885/4449
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Hip resurfacing is associated with higher rates (compared to conventional THA) of AVN, higher serum levels of metal ions, and higher rates of early postoperative fractures, specifically femoral neck fractures. However, the dislocation rate is significantly lower with hip resurfacing due to the larger size of the femoral component and more accurate restoration of anatomic hip biomechanics. Shimmin et al report on hip resurfacing complications, and published dislocation rates are 0.75% at a mean of 3 years’ follow-up. Also, in order to prepare the acetabulum while preserving the femoral head, a more extensive surgical approach and soft tissues releases are required for a resurfacing procedure.
3.2
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