Skeletal muscle is joined to bones. Its cells contract to make bones move and joints bend. The knee joint has two muscles that move the shin up or down. These are the hamstrings and the quadriceps.

Explores the anatomy and functions of ... the ball-and-socket joint of the shoulder and hip, and the complex structure of the knee. The film describes the movements allowed by these joints and ...

Primary total hip and total knee replacements are among the most common and successful orthopedic procedures worldwide. These ...