Experimental and computational evaluation of knee implant wear and creep under in vivo and ISO boundary conditions.

ABSTRACT:

Background

Experimental knee implant wear testing according to ISO 14243 is a standard procedure, but it inherently possesses limitations for preclinical evaluations due to extended testing periods and costly infrastructure. In an effort to overcome these limitations, we hereby develop and experimentally validate a finite-element (FE)-based algorithm, including a novel cross-shear and contact pressure dependent wear and creep model, and apply it towards understanding the sensitivity of wear outcomes to the applied boundary conditions.

Methods

Specifically, we investigated the application of in vivo data for level walking from the publicly available "Stan" data set, which contains single representative tibiofemoral loads and kinematics derived from in vivo measurements of six

SUBMITTER: Dreyer MJ 

PROVIDER: S-EPMC11664841 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature