In this exercise, we will examine the muscles, arteries and nerves of the thigh. The muscles of the thigh work on the hip and knee. These are very powerful muscles that not only keep us upright and control the effects of gravity and momentum but also play a key role in locomotion.

The knee can be a rather unstable joint because it is located centrally on the lower limb where it must resist the forces of the total body weight during the great leverage imposed by the long bones of the thigh and leg.