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Arm Muscles

The pain, symptoms and signs of dysfunction in the arm muscles. Cause and effect are listed as well as other muscles that may be contributing to your pain.

Extensor Digitorum Muscle: Arm, Elbow, Hand, Finger Pain

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.

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Extensor Indicis Muscle: Hand and Finger Pain

The extensor indicis muscle is located in the back of the forearm. It contributes to pain in the back of the wrist, hand, and the 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.

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Flexor Pollicis Longus Muscle: Thumb Pain

The flexor pollicis longus muscle is located in the forearm, same side as the thumb. It contributes to pain in 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.

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Pronator Teres Muscle: Forearm, Wrist, Thumb Pain

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.

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Extensor Carpi Ulnaris Muscle: Wrist Pain

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.

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Anconeus Muscle: Elbow Pain

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.

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Brachioradialis Muscle: Elbow, Forearm, Thumb Pain

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.

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Supinator Muscle: Elbow and Thumb Pain

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.

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Triceps Brachii Muscle: Shoulder, Arm, Elbow, Hand Pain

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.

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Coracobrachialis Muscle: Arm, Shoulder and Hand Pain

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.

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Brachialis Muscle: Arm, Elbow, Thumb Pain

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.

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