Implant Materials
A 52-year-old active male presents for discussion regarding total hip arthroplasty for end-stage osteoarthritis. He is concerned about implant longevity and has researched different bearing surface options. He works as a fitness instructor and wishes to return to high-impact activities. His BMI is 26. You discuss the tribological properties, wear characteristics, and clinical outcomes of various bearing combinations. Regarding bearing surfaces in total joint arthroplasty:
Mark each as TRUE or FALSE
Tribology is the study of friction, wear, and lubrication; bearing surface wear generates debris tha...
Highly cross-linked polyethylene (HXLPE) has significantly reduced wear rates compared to convention...
Polyethylene wear rates are higher with larger femoral heads; ceramic-on-ceramic has the highest wea...
Ceramic-on-ceramic (CoC) offers the lowest volumetric wear (0.001-0.01mm³/year) and is bioinert; com...
Metal-on-metal (MoM) bearings produce cobalt and chromium ions that can cause adverse local tissue r...
Answer the questions to see explanations
Click T (True) or F (False) for each option