Lunate fracture

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Background

  • Isolated lunate injuries are rare
  • Occurs via FOOSH mechanism
  • Blood supply enters distal end - proximal fracture fragment at risk of avascular necrosis (Kienbock’s disease)

Clinical Features

  • Tenderness elicited by axial compression applied along 3rd metacarpal

Differential Diagnosis

Carpal fractures

AP view

Evaluation

  • Hand x-ray (PA and lateral views)
  • MRI/CT may be required to identify occult fractures

Management

General Fracture Management

Immobilization

Disposition

  • Discharge with referral to orthopedic surgery

See Also

References