Abductor digiti minimi hand muscle contributes to pain on the outside of the hand radiating up into the little finger. Pain can be sharp when moving the little finger. The outside pad of the hand will often have a dull ache.
The lumbrical muscles of the hand contribute to pain in the back of the hand and the fingers. Pain in the index finger and/or the little finger are most common. Stiffness in the finger joints mimics arthritis pain. Stiffness and pain when opening and closing the hand is also common.
The opponens pollicis muscle contributes to pain in the thumb and wrist. Pinching and holding objects between the thumb and index finger causes a sharp pain