Hand

Interphalangeal Dislocation

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Interphalangeal Dislocation, IP Dislocation, IP Joint Dislocation, Finger Dislocation at Interphalangeal Joint

  • Mechanism
  1. Hyperextension injury most common
  2. Common injury in athletes
  • Complications
  1. Longterm stiffness
  2. Phalanx Fracture
  3. Tendon Injury
  • Exam
  1. Ligament stability
  2. Motor function
  3. Sensation
  4. Distal circulation (Capillary Refill)
  5. Active joint range of motion
    1. Flexion
    2. Extension
  6. Finger alignment
    1. Extension
    2. Flexion
      1. Finger tips should not overlap
      2. Finger tips should all point towards thenar eminence
  • Signs
  1. Grossly deformed digit
  2. Swelling
  3. Erythema
  4. Decreased range of motion
  5. Tenderness to palpation
  • Imaging
  • Three View Finger XRay before and after reduction
  1. Exclude avulsion Fracture
  2. Reduction may be attempted on sideline without XRay