ARTHROPLASTY
Piriformis sparing THA spares piriformis muscle grade and bulk degeneration
J Arthroplasty. 2012 Apr;27(4):551-8. Epub 2011 Jul 2822 patients with osteoarthritis of the hip, between the ages of 60-80, were randomized to total hip arthroplasty using either a piriformis sparing (PS) or standard posterior surgical approach. Follow-up at 3 months indicated that patients in the PS groups suffered significantly less deterioration in piriformis muscle grade and bulk compared to the standard group. The difference in grade remained significant at 2 year postoperative follow-up.
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