ORDER BEFORE 3PM EST 12/13 TO GET YOUR GEAR BEFORE CHRISTMAS. E-Gift Cards and Expedited Shipping are available. Click for Details

The Mat – Strength Magazine – August, 1924

A joint in the human body is quite a simple affair. The joints at the shoulders and hips are of the type called “ball-and-socket” joints, whereas at the elbow and knee joints are “hinge” joints, and the ankles and wrists are modifications of the “ball-and-socket” principle.

Stark CenterUniversity of Texas