Medial pivot total knee arthroplasty for valgus knees provides equivalent medial stability compared to that for varus knees: In vivo kinematic study.

ABSTRACT:

Purpose

The efficacy of medial pivot total knee arthroplasty (MP TKA) in treating valgus knees that may cause medial instability is unknown. The purpose of this study was to investigate the in vivo kinematics of MP TKA for the valgus knees and compare them to those for the varus knees.

Methods

The kinematics of 19 valgus knees and 19 varus knees operated in the MP TKA were investigated under fluoroscopy during squatting using a two- to three-dimensional registration technique. Accordingly, the valgus and varus knees were evaluated and compared in terms of knee flexion angle, anteroposterior translation for the medial and lateral low contact points, axial rotation and valgus-varus angle of the femoral component relative to the tibial component, as well as kinematic pathways.<

SUBMITTER: Kage T 

PROVIDER: S-EPMC11655669 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature