Which joint type is primarily non-movable?

The synarthrodial joint is characterized by its primarily non-movable nature. These joints offer stability and strength, allowing for very limited or no movement at all. They typically connect bones through a solid tissue structure, such as fibrous connective tissue or cartilage. Examples of synarthrodial joints include sutures found in the skull, which are designed to securely hold the cranial bones together.

In contrast, other joint types allow for greater mobility. Synovial joints, for example, are highly movable and include a wide range of joint types such as hinge joints and ball-and-socket joints, which facilitate various forms of movement such as flexion, extension, and rotation. Hinge joints, like those found in the knees and elbows, permit movement primarily in one plane. Ball-and-socket joints, like the shoulder and hip joints, provide a wide range of rotational movement. Thus, it is the nature of synarthrodial joints that distinguishes them as primarily non-movable in comparison to the more mobile synovial, hinge, and ball-and-socket joints.