Pushing Ceramic-on-Ceramic in the most extreme wear conditions: A hip simulator study.

Orthopaedics & Traumatology, Surgery & Research : OTSR
Marcello De FineGiovanni Pignatti

Abstract

Hip revision surgery for fractured ceramic components may represent the worst-case wear scenario due to the high risks of recurrent dislocations, instability, and third body wear. The ideal bearing choice for the new prosthetic articulation is still subject of debate, while alumina matrix composite (AMC) articulations offer theoretical superior performances; the present work was designed to test the wear behaviour of ceramic on ceramic articulations (liner and head) in a worst-case scenario by adding ceramic third-body particles to the test lubricant with combined walking and subluxation cycles in a hip joint simulator. Therefore, we performed an in vitro study aiming to assess how does AMC articulation perform with 1) third-body particles added to the test environment and 2) under subluxation stresses. We hypothesised that AMC articulations offer superior performances in such worst conditions. A hip simulator test was designed to analyse how AMC articulation performs with third-body particles added to the test environment and under subluxation stresses. Two different load patterns including level walking and subluxation of the ceramic liner were applied. The test fluid lubricant was contaminated by adding coarse ceramic partic...Continue Reading

References

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Citations

Dec 20, 2020·Orthopaedics & Traumatology, Surgery & Research : OTSR·Laurent SedelEtienne L Belzile

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