including examples such as the hinge joint of the elbow, 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 ...

For example, the elbow flexes when performing ... or in the back leg as a gymnast performs a split leap. Ball and socket joints also allow types of movement called abduction, adduction, rotation ...

The different types of movement that are permitted at each joint are described below. Flexion – bending a joint. This occurs when the angle of a joint decreases. For example, the elbow flexes ...

Movement is medicine, Bottrell noted, and helps the body in the following ways: Moving promotes synovial fluid, which is the lubricating fluid found in the joints. Synovial fluid provides the ...