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.
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 ...
The NIH grant will pay for the creation and testing of a prototype shoulder joint, first in a lab and then in a human cadaver, to verify that the device operates consistently and safely.