A gomphosis joint, often referred to as a peg-and-socket joint, is a unique type of joint found primarily in the human body where a conical peg fits into a socket. The most common example of a gomphosis joint is the relationship between the roots of teeth and the sockets in the jawbone.
In terms of movement, gomphosis joints are classified as synarthroses, which means they allow for very little to no movement. The primary function of these joints is to provide stability and support. The teeth are anchored firmly in their sockets by a fibrous tissue known as the periodontal ligament, which permits only minor movements, such as those occurring during chewing or slight positional shifts.
In summary, while there may be negligible movement associated with gomphosis joints, it is limited to small shifts necessary for function, ensuring that teeth remain securely anchored in the jaw.