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Musculoskeletal system



Bennett fracture

  • mechanism: forced abduction of thumb

  • findings:
    • intraarticular fracture/dislocation of the base of the 1st metacarpal at the ulnar aspect
    • small fragment of metacarpal continues to articulate with the trapezium
    • lateral retraction of metacarpal shaft by abductor pollicis longus

  • difficult to keep in anatomical alignment
  • complication: pseudoarthrosis
  • better prognosis than Rolando fracture

see: thumb fractures

Yong H. Hahn, MD  -  2 February 1995
Last updated:  1 October 2013


Related CHORUS documents:
thumb fractures
ankle anatomy
aneurysmal bone cyst
bone island
Jefferson fracture
cervical spine fractures


Copyright © 2013, Charles E. Kahn, Jr.