A joint, e.g. in the skull, where the bones have fused together.
An immovable joint in which the bones are united by fibrous tissue. Examples are the cranial sutures.
A type of immovable joint with fibrous connective tissue or cartilage between the bone surfaces. Movement is absent or limited, and a joint cavity is lacking. It includes the synchondrosis, suture, and syndesmosis types of joints.
A type of joint where bones are firmly connected without a joint membrane in between. There are three kinds: sutures, where bone structures interlock; schindylesis, where a thin bone plate fits into another bone’s groove; and gomphosis, where a cone-shaped bone process fits into a socket of another bone.