Functional joint classifications: synarthrosis, amphiarthrosis, diarthrosis, syndesmosis,pivot

Synarthrosis

• A immobile or nearly immobile joint

• Example: include sutures, which are the fibrous joints between the skull bones

Amphiarthrosis

- is a immovable joint

• examples include the pubic symphysis where the pubic bones of the pelvis are joined by fiber cartilage, and the intervertebra discs, which are thick pads of fibrocartilage that separate the vertebrae

Diarthrosis

• A freely moveable joint most common type of joint in the body

Synchismosis

Syndesmosis

-Bones are held together by either a band(interosseous ligament) or a sheet (interosseous membrane) of dense regular collagenous connective tissue

Example is the interosseous membrane between the radius and ulna in the forearm

Pivot

• The rounded or conical particular surface of one bone articulates with A shallow depression on another bone, allowing uniaxial rotation; examples include the atlantoaxial joint and the proximal radioulnar joint