Carpometacarpal dislocation

Background
  • Also known as CMC joint
  • Uncommon due to strong ligaments and insertions of wrist flexors/extensors

Clinical Features
  • Cause is usually result of high-speed mechanisms
  • Usually dislocates dorsally with associated fracture(s)

Differential Diagnosis

Hand and finger dislocations

Evaluation
  • X-ray

Management

Reduction
  • Traction and flexion with simultaneous longitudinal pressure on metacarpal base
  • If unable to reduce or remains unstable, immobilize with both dorsal and volar splints for urgent hand surgeon referral[1]

Disposition
  • Refer to hand surgeon

See Also

References
  1. German C. Hand and wrist emergencies. In: Bond M, ed. Orthopedic Emergencies: Expert Management for the Emergency Physician. Cambridge: Cambridge University Press; October 31, 2013.
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