Hip Wear Test
Wear performance of hip replacements is assessed via loading and displacement parameters as specified in ISO 14242-1. Up to 6 systems can be assessed on OIC’s AMTI Hip Simulator. Samples complete 5 million cycles of testing and wear is measured through gravimetric analysis following ISO 14242-2. Typical add-ons for this test are accelerated aging of polyethylene components (ASTM 2003), wear particle characterization (ASTM F1877), surface roughness characterization, and CMM measurement to evaluate dimensional changes resulting from the test. Adverse condition testing is also commonly performed to evaluate TKR device performance under non-ideal conditions such as increased load, high range of motion, and roughened or pre-damaged articular surfaces.