What is the only bone in the body that does not form a joint?
It's the hyoid bone. It's located in the throat and is an attachment point for the tongue.
The only bone in the body that does not form a part of a joint with another bone is the "hyoid" bone. This bone is found under the tongue and together with a number of muscles which form the floor of the mouth. The hyoid bone forms the base of support for the tongue and is important in functions such as speech and swallowing.
"The clavicle articulates with the sternum to form the sternoclavicular joint, the only direct connection between the upper extremity and the trunk. The sternoclavicular joint is extremely weak because of its bony arrangement, but it is held securely by the sternoclavicular ligament that pull the clavicle downward and twoards the sternum, thus anchoring it.
Ball-and-socket joint - the rounded head of one bone fits into a cuplike cavity of the other and admits movement in any direction (hip bone) Synovial joint - A fully moveable joint in which the synovial joint cavity is present between the two articulating bones Hinge joint - Joint between bones that permits motion in only one plane (elbow, knee)