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Review Question - QID 842

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QID 842 (Type "842" in App Search)
When discussing metal on metal hip resurfacing versus metal on polyethylene total hip replacement, the surgeon should inform the patient that all of the following are disadvantages of hip resurfacing EXCEPT?

Higher dislocation rate

69%

3080/4449

Higher periprosthetic fracture rate

3%

112/4449

Increased serum metal ion levels

3%

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.

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