TYPES OF SYNOVIAL JOINTS: BALL AND SOCKET Synovial joints are freely mobile joints in which the articulating surfaces have no direct contact with each other. There a 6 types of synovial joints, and today we're taking a closer look at the ball and socket joint. 🥎 The ball and socket joint has a ball-shaped surface of one rounded bone that fits into a cup-like depression of another bone. The distal bone can move around in several axes with one common center, enabling the joint to move in many dir