THE SUBTALAR JOINT The subtalar joint, between the talus and the calcaneus, contributes to the complex motions of pronation and supination. These action In addition, the subtalar joint has the largest surface area of all the joints in the foot. Without the subtalar joint, you would be unable to run, jump, walk, or move with any precision. It is often the site of sprains, dislocation, and fractures, and can also be directly affected by rheumatoid arthritis or osteoarthritis. Two important actions

What We Know About Subtalar Joint Anatomy and Patheomechanics