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Revised AO/OTA classification (Jan 2018)

Introduction

A revision of the AO/OTA Fracture and Dislocation Classification was published in the January 2018 issue of the Journal of Orthopaedic Trauma (Compendium and support material). This module is organized according to the 2007 version. Please read through its revised classification (below) before returning to the AO Surgery Reference.

11A1 Extraarticular, unifocal, 2-part, tuberosity fracture

11A1.1 Greater tuberosity fracture

11A1.2 Lesser tuberosity fracture

11A2 Extraarticular, unifocal, 2-part, surgical neck fracture

11A2.1 Simple fracture

11A2.2 Wedge fracture

11A2.3 Multifragmentary fracture

11A3 Unifocal, 2-part, extraarticular vertical fracture

11A3 Unifocal, 2-part, extraarticular vertical fracture

11B1 Extraarticular, bifocal, 3-part, surgical neck fracture

11B1.1* With greater tuberosity fracture

*Qualifications:
u Intact wedge
v Fragmentary wedge

11B1.2* With lesser tuberosity fracture

*Qualifications:
u Intact wedge
v Fragmentary wedge

11C1 Articular or 4-part, anatomical neck fracture

11C1.1* Valgus impacted fracture

*Qualifications:
n Greater tuberosity
o Lesser tuberosity
p Both tuberosities

11C1.3 Isolated anatomical neck fracture

11C3 Articular or 4-part, anatomical neck fracture associated with metaphyseal fracture

11C3.1 With a multifragmentary metaphyseal segment with intact articular surface

11C3.2* With a multifragmentary metaphyseal segment with articular fracture

*Qualifications:
x Simple articular
y Multifragmentary articular

11C3.3* With a multifragmentary metaphyseal fracture, with diaphyseal extension and articular fracture

*Qualifications:
x Simple articular
y Multifragmentary articular

Executive Editor: Peter Trafton

Authors: Martin Jaeger, Frankie Leung, Wilson Li

Additional credits

Proximal humerus

Appendix

Note

Optimal treatment of proximal humeral fractures depends on several factors in addition to fracture morphology. Other important factors are:

  • Bone quality (eg, osteoporosis, comminution)
  • Blood supply to the humeral head
  • Preexisting condition of the rotator cuff
  • Patient's demands and comorbidities
  • Surgeon's preference/expertise/skills
  • Available resources

Shortcuts

Evidence summary

Decision support

Additional material

Further reading

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v2.0 2011-05-02