Thursday, 26 July 2012

BENNETT'S fracture

Frontal radiograph of left wrist shows fracture base of 1st metacarpal with extension into articular surface. The fracture fragment maintains articulation with trapezium, rest of the metacarpal shows mild displacement laterally.

Rolando Fracture
  • Comminuted
  • Intra-articular
  • Fracture through base of thumb
  • Prognosis: worse than Bennett's fracture
    (difficult to reduce)

Bennett's Fracture
  • Intra-articular fracture/dislocation of base of 1st metacarpal
  • Small fragment of 1st metacarpal continues to articulate with trapezium
  • Lateral retraction of 1st metacarpal shaft by abductor pollicis longus

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