AO Classification of Fractures

Following in the footsteps of Prof Maurice E Müller and as a continuation of a long history of fracture classification in the AO Foundation, the AO Classification Advisory Group, together with AO Clinical Investigation and Documentation, supports AO Specialties in the implemention of projects aimed at the development and validation of fracture classification systems. In this context a comprehensive software classification tool has been developed.​


Revised AO/OTA Fracture and Dislocation Classification

A revision of the AO/OTA Fracture and Dislocation Classification was published in the January 2018 issue of the Journal of Orthopaedic Trauma.

Click here to access the new compendium and support materials.

To provide users with a more streamlined, concise, and clinically relevant tool, changes to terminology and typography were made, a review of the codes with regards to frequency and applicability was conducted, paired bones (radius/ulna and tibia/fibula) are now coded individually, all fracture illustrations were newly produced, and a list of universal modifiers and qualifications were introduced.