Orthopedics Book

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Interphalangeal DislocationAka: IP Dislocation, IP Joint Dislocation, PIP Dislocation, Dislocation at Proximal Interphalangeal Joint, Finger Dislocation at Interphalangeal Joint

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  1. Mechanism
    1. Hyperextension injury most common
    2. Common injury in athletes
  2. Complications
    1. General
      1. Distal Phalanx Fracture
      2. Tendon Injury
    2. Dorsal PIP Dislocation (most common)
      1. Risk of Volar Plate Injury
    3. Volar PIP Dislocation (rare)
      1. Risk of Central slip rupture
      2. May result in Boutonniere Deformity
  3. Imaging: Finger XRay before and after reduction
    1. Exclude avulsion Fracture
    2. Reduction may be attempted on sideline without XRay
  4. Signs
    1. Grossly deformed digit
  5. Management
    1. See Dorsal PIP Dislocation
    2. See Lateral PIP Dislocation
    3. See Volar PIP Dislocation
    4. See DIP Dislocation
    5. See IP Joint Dislocation at Thumb
    6. See Metacarpal-Phalangeal Dislocation
  6. Complications
    1. Risk of longterm stiffness
    2. Risk of Boutonniere Deformity

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