In vivo kinematics of cruciate-retaining total knee arthroplasty after a change of polyethylene insert configuration.

ABSTRACT:

Background

To investigate in vivo kinematics of total knee arthroplasty (TKA) with the introduction of a mildly constrained (MC) type of polyethylene (PE). We compared the knee kinematics with a reported pattern after surgery using the same component with a conventionally constrained (CC) type of PE.

Methods

Finite element analysis (FEA) was performed to examine different peak stress distribution of both types of PE. For in vivo study, patients who underwent cruciate-retaining TKA using a total knee system with MC-PE were included. Fluoroscopic surveillance was used to measure the weight-bearing deep knee bend (squatting) using a two-dimensional/three-dimensional (2-D/3-D) registration technique.

Results

FEA analysis revealed the edge loading of the femoral component

SUBMITTER: Watanabe S 

PROVIDER: S-EPMC7782324 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature