The inclination of the tibial component has an impact on fracture stability in unicompartmental knee arthroplasty: an artificial bone study.

ABSTRACT:

Background

Periprosthetic fractures (PPFs) following unicompartmental knee arthroplasty (UKA) are a significant clinical challenge. Tibial component positioning may influence fracture risk, but the biomechanical effects of varus inclination on fracture loading remain unclear.

Methods

We investigated the effect of tibial component varus inclination on fracture load using the Oxford^® Partial Knee implant system, synthetic tibiae and a dynamic loading model. Tibial components were implanted at neutral (0°), 3° and 6° varus angles. Vertical loading was applied until fracture and fracture loads were compared between groups.

Results

A 3° varus position significantly increased fracture load by 34% compared to neutral (p < 0.05). No further statistically significan

SUBMITTER: Wegner M 

PROVIDER: S-EPMC12558962 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature