The extensors of the fingers include extensor indicis, extensor digitorum, and extensor digiti minimi. Collectively they extend all four fingers of the hand at the knuckle and finger joints. They are grouped together here because their location, function, and activations are similar. Their chief function is to extend the fingers and to provide a balanced to make the grasp of individual fingers possible. They are essential for a strong grasp.

The extensor indicis extends the index finger. The extensor digitorum extends all the fingers but primarily extends the 3rd and 4th fingers. The extensor digiti minimi extends both the 5th finger and the elbow joint.

Symptoms include weakness as well as pain, tenderness, and stiffness in the hand and fingers. The finger involved corresponds to its primary extensor. They occur on the outside of the forearm, near the elbow, and progress down the arm toward the base of the thumb and hand. You may wake up at night from pain, drop objects, and have troubl