Joint Classifications
Amphiarthroses
Slightly movable joints between two bones-
Gomphoses
immovable joint in which a conical process fits into a socket
Enarthrosis
A ball-and -socket joint in which the spherical head fits into a cuplike cavity and provides free movement. eg. hip and shoulder joints
Ginglymus
A hinge joint that only allows movement in only one plane eg. elbow and knee joints
Ellipsoid
A modified ball and socket joint inwhich the opposing surfaces are shaped like a spindle or are ellipsoidal instead of being spherical. eg. wrist joint
Trochoid
A pivot joint that resembles a pulley and allows movement in a partial ring. eg. radiounlar joints
Arthrodia
Agliding joint where bones slide face to face and movement is limited by restraining ligaments.eg.intercarpal and intertarsal joints
Articular Cartilage
Connective tissue covering the ends of long bones
Saddle Joint
Freely Movable joint where both bones have a convex and concave shape eg. carpometacarpal joint
Gliding Joint
Freely movable joint that allows bones to make sliding motion
Hinge Joint
Freely movable joint that has one convex surface and one concave surface
Pivot Joint
Freely movable joint where a bones moves around a central axis
Ball and Socket Joint
Freely movable joints in which a rounded end of one bone fits into an indented end of another
Condyloid Joint
Freely moveable joint that allows bones to move about one another in many directions, BUT NOT rotation
Synarthroses
Immovable joint that lacks synovial cavity and held together by fibrous connective tissue. eg. sutures of the cranium and the sternocostal joints
Sutures
Joint where thin layer of dense fibrous connective tissue unites bones of the skull
Synovial fluid
Lubricating substance found in joint cavities
Syndesmoses
The fibrocartilage forms an interosseous ligament between the bones. eg. the inferior tibiofibular articulation an the bones of the infant skull. Slightly movable joints where bones are connected by ligaments.
Symphysis
The opposed surfaces of the bone are connected through fibrocartilage. eg. include the symphysis pubis and the intervertebral discs.
Diarthroses
aka synovial joints; freely movable joints that is lubricated by synovial fluid within the joint space