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- W2811088894 abstract "Background Postoperative changes of the femoral posterior condylar offset (PCO) and posterior tibial slope (PTS) affect the biomechanics of the knee joint after fixed-bearing total knee arthroplasty (TKA). However, the biomechanics of mobile-bearing is not well known. Therefore, the aim of this study was to investigate whether alterations to the PCO and PTS affect the biomechanics for mobile-bearing TKA. Methods We used a computational model for a knee joint that was validated using in vivo experiment data to evaluate the effects of the PCO and PTS on the tibiofemoral (TF) joint kinematics, patellofemoral (PF) contact stress, collateral ligament force and quadriceps force, for mobile-bearing TKA. The computational model was developed using ±1-, ±2- and ±3-mm PCO models in the posterior direction and −3°, 0°, +3°, and +6° PTS models based on each of the PCO models. Results The maximum PF contact stress, collateral ligament force and quadriceps force decreased as the PTS increased. In addition, the maximum PF contact stress and quadriceps force decreased, and the collateral ligament force increased as PCO translated in the posterior direction. This trend is consistent with that observed in any PCO and PTS. Conclusions Our findings show the various effects of postoperative alterations in the PCO and PTS on the biomechanical results of mobile-bearing TKA. Based on the computational simulation, we suggest that orthopaedic surgeons intraoperatively conserve the patient's own anatomical PCO and PTS in mobile-bearing TKA." @default.
- W2811088894 created "2018-07-10" @default.
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- W2811088894 date "2018-10-01" @default.
- W2811088894 modified "2023-09-30" @default.
- W2811088894 title "Effects of posterior condylar offset and posterior tibial slope on mobile-bearing total knee arthroplasty using computational simulation" @default.
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- W2811088894 doi "https://doi.org/10.1016/j.knee.2018.06.011" @default.
- W2811088894 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29980426" @default.
- W2811088894 hasPublicationYear "2018" @default.
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