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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.
Types of Dislocated Fingers. 1  PIP dislocation or proximal interphalangeal joint dislocation is the commonest type of finger dislocation, which occurs in the first finger joint from the knuckles. 2  Traumatic injuries are a common cause of PIP dislocation.islocated Finger Joint Pictures and Treatment. A dislocated finger joint is rarely seen in orthopedic practice, due to the inborn reflexive attitude of a person to protect fingers from injury. This can also be due to the fact, that finger movements are controlled by a large area of the brain.