Figure 1 - uploaded by Shriram Duraisamy
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(a) 3D subject-specific knee joint model, (b)-(c) maximum values of contact pressures of medial and lateral tibial plateau, and (d)-(f) tibial translation and rotations with respect to femur for a complete gait cycle
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... 3D subject-specific validated FE model of a human knee joint (Fig. 1a) was developed based on cadaveric experiments. Menisci and tibiofemoral ligaments were modeled as circumferentially and longitudinally fibric hyperelastic material [1], respectively; cartilages were modeled as hyperelastic material, and bones were considered as rigid bodies. Loading condition was applied based on an experimental gait ...
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... contact pressures of tibial cartilage and knee joint kinematics including anterior translation, varus rotation, and internal rotation of tibia with respect to femur were determined and compared as a function of gait. Figure 1(b-c) shows the peak contact pressures of medial and lateral tibial plateau. Total medial meniscectomy and lateral meniscectomy increased contact pressure in the tibial cartilage by 65% at 54% of gait cycle and 52% at 46% of gait cycle, respectively, both occurred during the loading response of the stance phase. ...
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... of gait cycle and 52% at 46% of gait cycle, respectively, both occurred during the loading response of the stance phase. Compared with the intact knee model, an increase in anterior translation (1.5 mm), varus rotation (5.2°), and internal rotation (18.6°) of tibia were observed, in the knee model with medial meniscectomy at 54% of gait cycle ( Fig. 1(d-f)). Similarly, increase in anterior translation (1.3 mm), varus rotation (1.3°), and internal rotation (3.5°) of tibia were observed, in the knee model with lateral meniscectomy at 46% of gait cycle. These results show that total meniscectomies have undesirable impacts on the biomechanics characteristics of the knee joint. Also the ...
