Biomaterials
A 52-year-old active man requires total hip arthroplasty for avascular necrosis. He wishes to remain active with recreational sports. Discussion centers on bearing surface options including metal-on-polyethylene, ceramic-on-ceramic, and ceramic-on-polyethylene. He asks about the advantages and disadvantages of each option, particularly regarding wear, longevity, and potential complications. Regarding bearing surfaces in total hip arthroplasty:
Mark each as TRUE or FALSE
Highly cross-linked polyethylene (HXLPE) has dramatically reduced wear rates compared to conventiona...
Ceramic-on-ceramic (CoC) has the lowest wear rate (0.001-0.003mm/year) due to its hardness and scrat...
Metal-on-metal has the lowest wear rate; polyethylene wear is not related to osteolysis; conventiona...
Metal-on-metal (MoM) fell out of favor due to adverse local tissue reactions (ALTR) from metal debri...
Ceramic-on-polyethylene (CoP) combines the advantages of both materials: hard, smooth ceramic head r...
Answer the questions to see explanations
Click T (True) or F (False) for each option