Hip Arthroplasty
A 48-year-old male construction worker with end-stage hip osteoarthritis inquires about hip resurfacing arthroplasty. He has read about metal-on-metal bearings and is concerned about metal ions. He is very active, has no kidney disease, and wants to maintain his heavy manual occupation. The surgeon discusses the history, benefits, and risks of metal-on-metal hip resurfacing. Regarding metal-on-metal hip resurfacing:
Mark each as TRUE or FALSE
Hip resurfacing preserves proximal femoral bone stock by capping the femoral head rather than resect...
Metal-on-metal bearings generate metal debris and release cobalt and chromium ions; elevated serum i...
Metal-on-metal resurfacing generates no metal debris; ion levels are always undetectable; ALVAL does...
Optimal outcomes require precise component positioning with the cup at 40-45 degrees inclination to ...
Following regulatory concerns and high failure rates of certain designs (particularly ASR), many MoM...
Answer the questions to see explanations
Click T (True) or F (False) for each option