Supinator Trigger Points - Dr. Jonathan Kuttner    Trigger Points in the Supinator Muscles are Too Often Overlooked As The Muscle Lies Deep and "Concealed" - They are Often Associated with Elbow Pain. The supinator is associated with deceleration of the elbow during extension. When the forearm is held between supination and pronation, the supinator will decelerate elbow extension. The supinator is a lateral elbow pain generator. The muscle sneaks pain down into the web of the thumb on the dorsal side. Changes in sensations include, but are not limited to, numbness and weakness in the hand (which may...