Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooFinger Proximal Interphalangeal (PIP) Joint Dislocation

Elbow, Wrist & Hand

What It Is

The proximal interphalangeal (PIP) joint is the middle joint of the finger. A PIP joint dislocation happens when an injury forces the bones of this joint out of position, usually by bending the finger backwards or sideways past its normal limits (East Kent Hospitals University NHS Foundation Trust, 2026). It is the most commonly dislocated joint in the body (Leggit and Meko, 2006a). This often results in a painful, bruised and swollen joint that doesn't move properly, if it moves at all.

Sprains occur when the ligaments are stretched or torn, and can happen without the joint being dislocated. Sometimes a small piece of bone is pulled off along with the ligament; this is called an avulsion fracture (East Kent Hospitals University NHS Foundation Trust, 2026). It can be hard to tell whether a finger is broken, dislocated or badly sprained, so you will probably need an X-ray (NHS, 2025).

Suspected dislocations and sprains need to be checked and treated as quickly as possible. Until then, try not to move the finger, lift your hand up to reduce swelling, and remove any rings from that hand (NHS, 2025). Once the injury has been assessed and treated, gentle movement becomes important (see Therapy below).

Finger Proximal Interphalangeal Joint Dislocation Anatomy

All of the fingers have three bones in them, while the thumb only has two bones. At each joint, the bones are held together by ligaments, which are tough bands of connecting tissue (East Kent Hospitals University NHS Foundation Trust, 2026). There is a collateral ligament on each side of the joint, and a thick ligament on the palm side called the volar plate. Most PIP dislocations happen when the finger is bent backwards, and this mainly injures the volar plate, often with some damage to the collateral ligaments as well (Leggit and Meko, 2006a; Leggit and Meko, 2006b). The muscles that move the fingers are in the forearm and hand. They turn into tendons, which attach the muscles to the finger bones, and the muscles move the fingers by pulling on the tendons. The finger bones join the five metacarpal bones that make up the palm of the hand.

Many finger dislocations happen through blunt trauma in sport. Often, catching a ball at an awkward angle is enough, and rugby and American football injuries can also dislocate the finger.

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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