The proximal row of carpals articulates with the radius and ulna to deliver extension, flexion, ulnar deviation, and radial deviation. This joint is supported by an extrinsic list of potent palmar ligaments that crop up within the radius and ulna. Dorsally, it is actually supported with the dorsal intercarpal ligament https://marioqyfk18518.wikilinksnews.com/5237117/crafting_excellence_the_rivet_manual_hand_press_in_artisanal_work