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• W4307184256 abstract "Abstract Background At present, there is no consensus on the optimal biomechanical method for PCL reconstruction, and the “critical corner” that is produced by the femoral tunnel is currently considered to be one of the main reasons for PCL failure. Thus, the purpose of this study was to identify one or several different tunnels of the femur, thereby reducing the influence of the critical corner without reducing the posterior stability of the knee. Methods CT and MRI data of the knee joint of a healthy adult man were collected, and computer-related software was used to reconstruct the finite element model of the knee joint, to provide different properties to different materials and to allow for the performance of a finite element analysis of the reconstructed model. The position of the femoral tunnel was positioned and partitioned according to anatomical posture, and three areas were divided (the antero-proximal region, the antero-distal region and the posterior region). In addition, we applied a posterior tibial load of 134 N to the reconstructed model, recorded and compared different tunnels of the femur, conducted peak stress at the flexion of the knee joint of 0°, 30°, 60° and 90°, and elicited the displacement of the proximal tibia. Results Among the 20 different femoral tunnels, the graft peak stress was lower in tunnels 4, 12 and 18 than in the PCL anatomical footpath tunnel 13, especially at high flexion angles (60° and 90°). These three tunnels did not increase the posterior displacement of the proximal tibia compared with the anatomical footpath tunnel 13. Conclusion In summary, among the options for PCL reconstruction of the femoral tunnel, the tunnels located 5 mm distal to the footprint and 5 mm anterior to the footprint could reduce the peak stress of the graft; additionally, it may reduce the critical corner and was shown to not reduce the posterior stability of the knee joint." @default.
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• W4307184256 date "2022-10-24" @default.
• W4307184256 modified "2023-10-18" @default.
• W4307184256 title "Different Femoral Tunnel Placement in Posterior Cruciate ligament reconstruction: A finite element Analysis" @default.
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• W4307184256 doi "https://doi.org/10.21203/rs.3.rs-2021921/v1" @default.
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