Application of finite element methods in evaluating cementless implant stability after knee arthroplasty

Project description

Micromotion exceeding 150┬Ám at the implant-bone interface may prevent bone formation and limit fixation after cementless knee arthroplasty. Understanding the critical parameters impacting micromotion is required for optimal implant design, patient selection, and clinical performance. Finite element models have been commonly used to estimate the interface micromotion that cannot be measured directly. However, the micromotion at the tray-bone interface is typically estimated using simplified loading conditions, and the critical tray alignment parameters are unknown. Hence, this project aimed to investigate the influence of the surgical, patient, and design factors on interface micromotions in TKA/UKA during a series of activities of daily living.

The previously validated models were used to conduct this project.