(Ulnar collateral ligament injury)
(Inflamation at the intersection of the thumb extensors and radial wrist extensors approx. 4-6 cm proximal to dorsal wrist crease)
(Compression of the brachial plexus through area bordered by first rib, clavicle, and neck muscles. Symptoms include numbness and tingling in the arm or hands, pain radiating up or down the arm, hand, or neck, and occasional muscular weakness.)