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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.
A dislocated finger is an injury where the ends of the finger bones are forced out of their normal alignment. It's a painful, but fairly common sports injury. If you reach, grab, pull, or push while playing your sport, a dislocated finger is always a possibility.