There are three structural
classifications of joints: fibrous, cartilaginous, and synovial.
Functional classification of joints is based on the type and degree of movement permitted.
Fibrous joints are also called fixed or immovable joints because they do not move.
A suture is a type of fibrous joint (synarthrosis) bound by Sharpey's fibers that only occurs in the skull (cranium).
Syndesmoses are slightly movable joints formed where an interosseous ligament joins two bones.
A gomphosis is a fibrous joint that binds the teeth to bony sockets in the bones of the maxilla mandible.
Cartilaginous joints connected by hyaline cartilage are termed synchondroses.
A symphysis is a secondary cartilaginous joint that is permanent and slightly movable.
A synovial joint or diarthrosis occurs at articulating bones to allow movement. It is distinguished by a surrounding synovial capsule.
Synovial joints are highly innervated but vascularized indirectly by nearby tissues.
Joints are cushioned by small fluid-filled sacs called bursae and stabilized by tough bands of fibrous connective tissue called tendons.
Tendons provide stability at joints.
Synovial joints allow an individual to achieve a wide range of movements.
There are six different types of synovial joint based on their shapes, each allowing a different kind of movement.