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Finger dislocation, also called a finger jam, is a common injury. It occurs when the bones of the finger are moved (dislocated) from their normal position. A dislocated finger can occur in any of the joints of any finger, but it occurs most often in the middle knuckle of the little, ring, middle, or index finger.
If your finger becomes dislocated, you should avoid manipulating it, take steps to prevent swelling, and promptly seek medical attention. An examining physician may take x-rays, relocate the dislodged bone, and immobilize the finger.