Question

What is a pivot joint?

Answer 1

Pivot Joint:

1. It is a type of synovial joint in which the ends of the two bones connect.
2. In this joint, a cylinder-shaped bone rotates inside the other bone/ligament forming a ring around the joint.
3. Examples: The joint between the atlas(first cervical vertebrae) and axis(second cervical vertebrae) present right under the skull is a pivot joint that allows the turning of the head from side to side.
4. The twisting movement of the bones of the forearm, against the upper arm, is due to pivot joints.