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- W3200749508 abstract "The discussion and video links in this chapter assist the surgeon in reducing the risk of patellofemoral instability and managing any such instability after calipered kinematically aligned (KA) total knee arthroplasty (TKA). The first section reports the incidence, time of onset, and causes of patellofemoral instability using currently available femoral components designed for mechanical alignment (MA). The second section uses results from in vivo and in vitro kinematic studies to show that the use of femoral components designed for MA with KA is an unlikely cause of patellofemoral instability. The third describes intraoperative verification checks that minimize excessive flexion of the femoral component and the use of an anatomically designed patella component to reduce the risk of patellofemoral instability. The fourth proposes a redesign of the prosthetic trochlea to increase the lateral coverage of the anterior femur and to closely coalign the orientations of the prosthetic and native trochlear groove. The goal of these design changes is to promote the capture and containment of the patellar implant during knee flexion. The case studies in the final section showcase options for managing patellofemoral instability, including observation, arthroscopic lateral release, and open lateral release and medial reefing. The objective is to encourage those surgeons that perform calipered KA TKA to minimize flexion of the femoral component, use an anatomic patella component, and choose a femoral component designed explicitly for KA when they become available." @default.
- W3200749508 created "2021-09-27" @default.
- W3200749508 creator A5091783424 @default.
- W3200749508 date "2022-01-01" @default.
- W3200749508 modified "2023-09-26" @default.
- W3200749508 title "Reducing the Risk and Management of Patellofemoral Instability After Calipered Kinematically Aligned Total Knee Arthroplasty" @default.
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- W3200749508 doi "https://doi.org/10.1016/b978-0-323-75626-6.00019-6" @default.
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