Activity Analysis

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Everyday I sit in my car to drive to school. When I go to sit in the seat, my knees start in an extended position and move into a flexed position as I reach the seat. The motion of extension and flexion at the knee occur in the sagittal plane about a frontal axis. The osteokinematics of the knee are extension to flexion in a closed kinematic chain. In terms of arthrokinematics, the moving femur is the convex segment that rolls posteriorly and glides anteriorly on the stable tibial surface. The prime mover for knee flexion are the quadriceps muscles, which perform a eccentric contraction. 

Picture retrieved from: https://favpng.com/png_view/beautiful-car-sports-car-driving-royalty-free-clip-art-png/3SvC6Ryv

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