20-12-2023
Markus A. Wimmer
Department of Orthopedic Surgery, Rush University Medical Center, Chicago (IL)
Ideally, standardized wear testing protocols replicate the in vivo motions and forces of TKR patients. In a study with 30 TKR patients, two distinct in vivo gait patterns emerged, one characterized as having low anteroposterior motion and the other high anteroposterior motion. The aim of this study was to determine the effect of the two in vivo-determined gait patterns on total and backside insert wear in comparison with the ISO standard 14243-3. In order to differentiate and accurately quantify topside and backside wear, a novel technique was employed where different lanthanide tracers are incorporated into the polyethylene during manufacture.
