Incidence and Impact of Component Size Asymmetry in Bilateral Total Knee Arthroplasty: A Prospective Study

Dr. Syed Abdul Mubdi, Dr Syed Abdul Hadi

Abstract: This study investigates the incidence of component size asymmetry in patients undergoing bilateral total knee arthroplasty TKA. A prospective analysis was conducted on 100 patients treated at HOSMAT Hospital, Bangalore, between April and September 2022. The study found that 31% of patients exhibited asymmetry in component sizes, with 17% having femoral asymmetry, 19% tibial asymmetry, and 4% patellar asymmetry. The findings suggest that orthopedic surgeons should carefully assess the sizes of knee components independently for each knee to ensure optimal postoperative outcomes, avoiding errors that could arise from assuming bilateral symmetry.

Keywords: total knee arthroplasty, component size asymmetry, bilateral TKA, orthopedic surgery, functional outcome