Kinematic Alignment Technique in Total Knee Arthroplasty Changes Femoral Sizing

    January 2024 in “ Wiadomości Lekarskie ”
    Jakub Gocal, Nicholas M. Brown
    TLDR Kinematic alignment in knee surgery often requires smaller femoral components than mechanical alignment.
    The study investigates the impact of kinematic alignment (KA) versus mechanical alignment (MA) on femoral sizing in total knee arthroplasty (TKA) among 323 patients. Results indicate that KA significantly reduces femoral size compared to MA, with 10.7% of KA patients needing a smaller femoral size than tibial, compared to only 1.3% in the MA group. Additionally, KA resulted in a smaller-than-predicted femoral size more often than MA (68.7% vs. 53.6%). The findings emphasize the importance of considering alignment techniques in preoperative planning for TKA, as KA leads to a greater proportion of patients requiring smaller femoral components.
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