Biomaterials
A biomaterials researcher is studying wear mechanisms in total joint arthroplasty. They are comparing conventional ultra-high molecular weight polyethylene (UHMWPE) with highly cross-linked polyethylene (HXLPE) to understand how modifications reduce wear particle generation. Regarding polyethylene wear in arthroplasty:
Mark each as TRUE or FALSE
Polyethylene wear is a major cause of late arthroplasty failure; wear particles (0.3-10 micrometers)...
Wear mechanisms include adhesive (material transfer), abrasive (harder surface scratches PE), third-...
Polyethylene wear does not cause osteolysis; larger particles cause more inflammation; osteoblasts d...
Highly cross-linked polyethylene (HXLPE) is created by gamma irradiation (75-100 kGy) followed by th...
Vitamin E-stabilized HXLPE incorporates an antioxidant to neutralize free radicals without thermal t...
Answer the questions to see explanations
Click T (True) or F (False) for each option