Bearing Surfaces
A 52-year-old active female teacher requires primary total hip arthroplasty for osteoarthritis. She is concerned about implant longevity given her young age and active lifestyle. She asks about bearing surface options, having read about problems with metal-on-metal hips in the media. Her surgeon discusses the available options including metal-on-polyethylene, ceramic-on-polyethylene, and ceramic-on-ceramic bearings. Regarding bearing surface options in hip arthroplasty:
Mark each as TRUE or FALSE
Highly cross-linked polyethylene (HXLPE) has dramatically reduced wear rates compared to conventiona...
Ceramic bearings (alumina, alumina-zirconia composite) offer the lowest wear rates and excellent bio...
Metal-on-metal bearings are currently the preferred option for young active patients; HXLPE has high...
Metal-on-metal bearings have largely been abandoned due to adverse local tissue reactions (ALTR), ps...
Larger femoral heads (32mm or greater) reduce dislocation risk by increasing the jump distance and h...
Answer the questions to see explanations
Click T (True) or F (False) for each option