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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.

42A1 Simple, spiral fracture

42A1* Simple, spiral fracture

*Qualifications:
a - Proximal 1/3
b - Middle 1/3
c - Distal 1/3

42A2 Simple, oblique fracture (≥30°)

42A2* Simple, oblique fracture (≥30°)

*Qualifications:
a - Proximal 1/3
b - Middle 1/3
c - Distal 1/3

42A3 Simple, transverse fracture (<30°)

42A3* Simple, transverse fracture (<30°)

*Qualifications:
a - Proximal 1/3
b - Middle 1/3
c - Distal 1/3

42B2 Intact wedge fracture

42B2* Intact wedge fracture

*Qualifications:
a - Proximal 1/3
b - Middle 1/3
c - Distal 1/3

42B3 Fragmentary wedge fracture

42B3* Fragmentary wedge fracture

*Qualifications:
a - Proximal 1/3
b - Middle 1/3
c - Distal 1/3

42C2 Multifragmentary, intact segmental fracture

42C2 Multifragmentary, intact segmental fracture

42C3 Multifragmentary, fragmentary segmental fracture

42C3* Multifragmentary, fragmentary segmental fracture

*Qualifications:
i - Proximal diaphyseal-metaphyseal
j - Pure diaphyseal
k - Distal diaphyseal-metaphyseal

Executive Editor: Peter Trafton

Authors: Theerachai Apivatthakakul, Surapong Anuraklekha, George Babikian, Fabio Castelli, Antonio Pace, Vajara Phiphobmongkol, Raymond White, Kodi Kojima, Matthew Camuso

Additional credits

Tibial shaft

Appendix

Note

Importance of soft tissues:

Shortcuts

Evidence summary

Decision support

Additional material

Further reading

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v2.0 2012-05-13