A synarthrosis is a type of joint which allows no movement under normal conditions. Sutures and gomphoses are both synarthroses. Joints which allow more movement are called amphiarthroses or diarthroses. Syndesmosesjoints are considered to be amphiarthrotic, because they allow a small amount of movement.

What does the synarthrosis joint do?

A synarthrosis is a joint that is essentially immobile. This type of joint provides for a strong connection between the adjacent bones, which serves to protect internal structures such as the brain or heart. Examples include the fibrous joints of the skull sutures and the cartilaginous manubriosternal joint.

Does synarthrosis allow movement?

The presence of synovial fluid and an articular capsule give synovial joints the greatest range of movement among the three joint types; however they are the weakest of the joint types. Based on function, joints can be divided into synarthroses, amphiarthroses, and diarthroses.