The function of the<unk>  joint is to lift and maneuver weight load from the<unk><unk>  joint to be distributed across the forearm’s radius and ulna as a load-bearing joint. Supination of the<unk>  joint can move from 0 degrees neutral to approximately 80-90 degrees where Pronation of the<unk>  Joint can move from 0 degrees neutral to approximately 70-90 degrees. Supination (palms facing up) vs. pronation (palms facing down). Muscles that contribute to function are all supinator (Biceps Brachii, Brachioradialis, and Supinator) and pronator muscles (Brachioradialis, Pronator Quadratus, and Pronator Teres).
Distal radioulnar articulation
Proximal radioulnar articulation
Ulnar claw
Axon hillock
Radial plane
Pivot joint
Nintendo thumb
Neutral spine