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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.

2R3A1 Radius, extraarticular, radial styloid avulsion fracture

2R3A1 Radial styloid avulsion fracture

2R3A2 Radius, extraarticular, simple fracture

2R3A2.1 Transverse, no displacement/tilt (may be shortened)

2R3A2.2 Dorsal displacement/tilt (Colles)

2R3A2.3 Volar displacement/tilt (Smith’s)

2R3A3 Radius, extraarticular, wedge or multifragmentary fracture

2R3A3.1 Intact wedge fracture

2R3A3.2 Fragmentary wedge fracture

2R3A3.3 Multifragmentary fracture

2U3A1 Ulna, extraarticular, styloid process fracture

2U3A1.1 Tip of styloid fracture

2U3A1.2 Base of styloid fracture

2U3A2 Ulna, extraarticular, simple fracture

2U3A2.1 Spiral fracture

2U3A2.2 Oblique fracture (≥30°)

2U3A2.3 Transverse fracture (<30°)

2U3A3 Ulna, extraarticular, multifragmentary fracture

2U3A3 Ulna, extraarticular, multifragmentary fracture

2R3B1 Radius, partial articular, sagittal fracture

2R3B1.1 Involving scaphoid fossa

2R3B1.3 Involving lunate fossa

2R3B2 Radius, partial articular, dorsal rim (Barton’s) fracture

2R3B2.1 Simple fracture

2R3B2.2 Fragmentary fracture

2R3B2.3 With dorsal dislocation

2R3B3 Radius, partial articular, volar rim (reverse Barton’s, Goyrand-Smith’s II) fracture

2R3B3.1 Simple fracture

2R3B3.3 Fragmentary fracture

2R3C1 Radius, complete, simple articular and metaphyseal fracture

2R3C1.1* Dorsomedial articular fracture

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

2R3C1.2* Sagittal articular fracture

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

2R3C1.3* Frontal/coronal articular fracture

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

2R3C2 Radius, complete, simple articular, metaphyseal multifragmentary fracture

2R3C2.1* Sagittal articular fracture

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

2R3C2.2* Frontal/coronal fracture

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

2R3C2.3* Extending into the diaphysis

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

2R3C3 Radius, complete, multifragmentary articular, simple or multifragmentary metaphyseal fracture

2R3C3.1* Simple metaphyseal fracture

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

2R3C3.2* Metaphyseal multifragmentary fracture

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

2R3C3.3* Extending into the diaphysis

*Qualifications:
t - DRUJ stable
u - DRUJ unstable

Executive Editor: Steve Krikler

Authors: Renato Fricker, Jesse Jupiter, Matej Kastelec

Additional credits

Distal forearm

Appendix

Note

Evaluate patient for

  • age
  • hand dominance
  • occupation
  • level of activity
  • quality of bone
  • general medical condition

Shortcuts

Evidence summary

Decision support

Additional material

Further reading

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