Effect of tibial tray backside design on stress transfer and micromotion in uncemented posterior-stabilized TKA: A finite element study.

ABSTRACT:

Purpose

The uncemented posterior-stabilized total knee arthroplasty (PS-TKA) gained increasing acceptance as younger and active patients have higher requirements for the lifespan and functionality of prostheses, because their frequent gait and deep-flexion activities may amplify tibial implant-bone interface micromotion and increase the risk of early tibial loosening. The purpose of this study is to evaluate the biomechanical fixation effects of three different tibial tray backside designs, with the aim of informing surgeons in selecting the most appropriate fixation strategy for uncemented PS-TKA.

Methods

The finite element and micromotion models were developed to quantify the tibial von Mises stress and interface micromotion under the knee loading conditions. The effects o

SUBMITTER: Chen Z 

PROVIDER: S-EPMC12784101 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature