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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.
Many doctors also recommend ice be applied to a dislocated thumb. To do this, apply an ice pack to the palm of the hand just under the thumb. If no ice pack is readily available, anything cold or frozen will do, such as a bag of frozen vegetables.