High density polyethylene prosthetic femoral head replacemnt in the dog.
A high density polyethylene (RCH 1000) femoral head prosthesis was inserted in 5 large dogs. Periodic clinical and roentgenographic evaluations, and histopathological examination of the replaced joints as well as biomechanical evaluation of the prosthetic joints were done at intervals from 3 weeks to 15 months. HDP is NOT suitable for movable weight-bearing prosthesis articulating with cartilage or bone. Wear of the cartilage and the polyethylene occurred within a few weeks of function and became extensive proportionally to the length of use. The accumulating wear particles of HDP caused a significant foreign body granulomatous reaction which resulted in erosion of bone adjacent to the acetabulum in one hip.
D000077:Acetabulum / Q000473:pathology; D000818:Animals; D001847:Bone Diseases / Q000209:etiology; D002358:Cartilage, Articular / Q000473:pathology; D004285:Dogs; D005069:Evaluation Studies as Topic; D005549:Foreign-Body Reaction / Q000473:pathology; D006621:Hip Joint / Q000601:surgery*; D007595:Joint Prosthesis / Q000295:instrumentation* / Q000592:standards; D011095:Polyethylenes
D011095:Polyethylenes