Comparing TKA Implant Design for External Peak Knee Adduction Moments, Adduction Impulse and Movement Strategies During Stair Descent

Description

This presentation from the ISTA 2024 conference held in Nashville is led by Alexis, a PhD student, discussing a study on total knee arthroplasty and the functional outcomes associated with different implant designs. Alexis introduces the study, acknowledges Medacta International for funding, and outlines the primary focus—comparing the Attune and Medacta implant designs that are both cruciate retaining. She explains the distinct characteristics of each implant, emphasizing their symmetrical and asymmetrical baseplates, and how these designs may influence patient outcomes during activities like stair descent.



The presentation includes a detailed description of the study's methodology, which involved 23 participants aged 18 to 80, all post-operative from total knee arthroplasty, and able to ambulate independently. Alexis elaborates on the experimental design, mentioning the use of advanced motion capture technology and EMG to measure kinematics and muscle activation during stair descent.



Results are presented, showing no significant differences in key variables such as peak and mean knee abduction moments and rectus femoris activation between the two implant groups, indicating that the choice of implant design may not significantly affect lower extremity biomechanics during stair descent. Alexis concludes the presentation by suggesting the findings are preliminary and that further research is necessary to expand the study, followed by an invitation for audience questions.

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