The extensor digitorum is located in the back of the forearm. It contributes to pain in the back of the hand and middle finger which sometimes radiates up into the back of the wrist and the back of the forearm. Pain is occasionally felt in the front of the wrist, just below the palm.
The flexor digitorum profundus muscle is found in the front of the forearm. It can contribute to pain and twitching in the four fingers. It can affect one or any combination of the fingers. It can also cause trigger finger, where a finger will lock in a bent position.
The flexor digitorum superficialis is located in the front of the forearm. It contributes to pain in the four fingers, the palm, and occasionally the wrist. The muscle is a major contributor to trigger finger.
The palmaris longus muscle contributes to pain in the wrist, the palm of the hand, and will sometimes extend up into the forearm.
The flexor carpi ulnaris muscle is located on the inside (pinky side) of the forearm. It contributes to pain in the wrist, palm of the hand, and the ring and little fingers. Pain is sometimes felt in the elbow.
The flexor carpi radialis muscle is located in the front of the forearm. It contributes to pain in the wrist, bottom of the palm that often extends to the thumb pad and thumb. Twisting the wrist and gripping objects is painful.
The pronator quadratus muscle is located just above the wrist. It can contribute to pain in the wrist, thumb pad and thumb. It can also contribute to numbness in the hand which is most pronounced on the thumb and index finger side.
The extensor indicis muscle is located in the back of the forearm. It contributes to pain in the back of the wrist, hand, and index finger. The pain will often feel like you have sprained or strained the back of the hand. It can also cause charley horse like cramps in the index finger.
The flexor pollicis longus muscle is located in the forearm, same side as the thumb. It contributes to pain in the middle joint and tip of the thumb. Pinching motions between the forefinger and thumb can cause intense pain. It can also cause the middle thumb joint to pop and sometimes lock.
The pronator teres muscle is located in the front of the forearm. It can contribute to pain in the wrist near the thumb. Pain is often felt in the thumb pad and can extend up into the forearm. Cupping the hand can become almost impossible because of intense pain in the wrist and or thumb pad.
The extensor carpi ulnaris is found in the back of the forearm toward the side of the little finger. It can contribute to wrist pain. The pain feels like a severe sprain. Twisting the wrist can cause sharp pain. The muscle is also a prime contributor to writers cramp.
The extensor carpi radialis brevis muscle is located in the back of the forearm on the side of the thumb. It contributes to a burning pain in the back of the hand that sometimes extends up to the forearm. Twisting the wrist can cause excruciating pain. It also can cause a weakened unreliable grip.
The extensor carpi radialis longus contributes to pain in the elbow, forearm, back of the hand and first finger. It contributes to tennis elbow and can cause a weak unreliable grip.
The anconeus muscle is located in the forearm contributes to pain in the elbow. Pain is most pronounced when straightening the elbow. It is a prime contributor to tennis elbow and affects golfer’s non-dominant elbow.
The brachioradialis is located on the outside of the arm and is a contributor to tennis elbow. It can cause pain on the outside of the elbow, forearm and often descends down into the wrist and thumb. It can contribute to numbness around the thumb as well as a weakened grip.
The supinator muscle is located on the thumb side of the elbow. It can contribute to pain in the elbow, forearm, and back of the hand at the base of the thumb. It can also contribute to numbness and tingling in the thumb side of the hand.
The triceps brachii muscle is found in the back of the upper arm. It can contribute to dull aching pain in the shoulder upper arm, elbow, forearm which occasionally extends into the fingers. The elbow can be hypersensitive and difficult to bend and straighten.
The coracobrachialis muscle connects the shoulder to the upper arm. It can contribute to pain in the shoulder, back of the arm, and occasionally the middle finger. Pain is often felt when attempting to put your hand behind your back and or raising your arm over your head.
The biceps brachii muscle is found in the front of the upper arm. It contributes to pain in the shoulder, upper arm and elbow. Straightening the arm when the palm is facing up can be painful and difficult.
The brachialis muscle connects the upper arm to the lower arm. It contributes to pain in the upper arm, elbow, thumb pad and thumb. It can also cause tingling and / or numbness in the back of the forearm into the thumb. Bending and straightening the elbow is painful.
