Metacarpophalangeal finger dislocation
Alerts and Notices
Synopsis
Causes / typical injury mechanism: The most common mechanism is a fall onto an outstretched hand.Classic history and presentation: Metacarpophalangeal (MCP) joint dislocation typically presents with characteristic MCP joint extension and associated proximal interphalangeal (PIP) and distal interphalangeal (DIP) joint flexion.
Prevalence:
- Age – Most commonly seen in children and adults between the ages of 20 and 30 years.
- Sex / gender – Predominantly male.
- Finger – The index finger is most commonly affected. The thumb is the second most commonly affected.
Codes
ICD10CM:S63.269A – Dislocation of metacarpophalangeal joint of unspecified finger, initial encounter
SNOMEDCT:
312844001 – Dislocation of metacarpophalangeal joint
Look For
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Diagnostic Pearls
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Differential Diagnosis & Pitfalls
- Proximal phalanx fracture
- Metacarpal fracture
- PIP joint dislocation
- Carpometacarpal joint dislocation
- Flexor tendon rupture
- Extensor tendon rupture
- Sagittal band rupture
Best Tests
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Management Pearls
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Therapy
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References
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Last Reviewed:09/14/2020
Last Updated:10/12/2020
Last Updated:10/12/2020
Metacarpophalangeal finger dislocation