Question

Please describe what each of these bones are and do.

fixed joint, pivot joint, synovial joint, ball and socket joints and hinge joint


Thank you.

Answer 1

Fixed joint are joints that provide stability to certain bones and parts of the body. They include the bones of the skull and pelvis.

The pivot joint is a freely moveable joint providing rotary movements around a single axis, the joint between C1 and C2 vertebrates.

Ball and socket joints are characterized by the highest freedom of motion comprising flexion-extension, circumduction, and abduction-adduction, for instance, hip joint.

Hinge joint consists of two or three bones surfaces and allows bones to move in one direction (back and forth). The example is the elbow joint.