Four important synovial joints used in most sporting actions are the elbow and shoulder joints in the arm, and the knee and hip joints in the leg. The elbow and knee joints are both hinge joints.

The shoulder is one of the most mobile and complex joints in the human body. It is primarily composed of three muscles called deltoids, which are divided into three parts: Training all portions of ...

This occurs when the angle of a joint increases, for example, at the elbow when putting a shot. Abduction – movement away from the midline of the body. This occurs at the hip and shoulder joints ...