What locations would have a pivotal joint?

Pivotal joints allow for rotation around a single axis. They are found in the following locations:

Atlantoaxial joint: This joint is located between the first and second cervical vertebrae (C1 and C2). It allows the head to rotate from side to side.

Humeroulnar joint: This joint is located between the humerus (upper arm bone) and the ulna (one of the two bones of the forearm). It allows the forearm to rotate from palm up to palm down.

Radioulnar joint (proximal): This joint is located between the radius and ulna, the two bones of the forearm. It allows the radius to rotate around the ulna, which is necessary for pronation (palm down) and supination (palm up) of the hand.

Hip joint: This joint is located between the femur (thigh bone) and the acetabulum (a cup-shaped socket in the pelvis). It allows the leg to rotate medially (inward) and laterally (outward).

Knee joint: This joint is located between the femur (thigh bone) and the tibia (shin bone). It allows the leg to rotate slightly medially and laterally.