A basketball player comes down with a rebound and lands on o

A basketball player comes down with a rebound and lands on one foot with a shank angle of 60 relative to the floor while the thigh is 100 relative to the floor. The force on the floor is 2200 N. Draw a FBD and determine the compressive force and shear force on the shank side of the knee joint?

Solution

I can estimate the net joint moment in the right knee as follows: From Dempster table: shank 0.0465 * 55kg = 2.5575 kg. The proximal segment length of the shank is 0.433 * 45cm = 19.485cm (Dempster). Now I can calculate the net moment of the right knee: 2.5575kg * 19.485cm = -49.8 Nm , as it is a clockwise direction. The joint moment must be anticlockwise so it is 49.8 Nm.