Score: Proximal humerus fractures

Use: AO (ASIF) classification

A: unifocal fractures

  • A1: extra-articular unifocal fracture, tuberosity
  • A2: extra-articular unifocal fracture, impacted metaphyseal
  • A3: extra-articular unifocal fracture, non-impacted metaphyseal
  • B: bifocal fractures

  • B1: extra-articular bifocal fracture, with metaphyseal impaction
  • B2: extra-articular bifocal fracture, without metaphyseal impaction
  • B3: extra-articular bifocal fracture, with glenohumeral dislocation
  • C: articular fractures

  • C1: articular fracture, with slight displacement
  • C2: articular fracture, impacted with marked displacement
  • C3: articular fracture, with glenohumeral dislocation
  • Reference

    Classification and Diagnosis in Orthopaedic Trauma. Editors: Rahij Anwar, Kenneth W. R. Tuson, Shah Alam Khan. Cambridge University Press, 2008