AO Classification

The AO group has developed a comprehensive classification of fractures. The classification is arranged in order of increasing severity according to the complexities of the fracture, difficulty of treatment and worsening prognosis.

More detailed information about the classification can be obtained from AO Foundation

• AO Classification – General Principles
• AO Classification 11 – Proximal Humerus
• AO Classification 12 – Humeral Diaphysis
• AO Classification 13 – Distal Humerus
• AO Classification 21 – Radius/Ulna Proximal
• AO Classification 22 – Radius/Ulna Diaphysis
• AO Classification 23 – Radius/Ulna Distal
• AO Classification 31 – Femur Proximal
• AO Classification 32 – Femur Diaphysis
• AO Classification 33 – Femur Distal
• AO Classification 41 – Tibia/Fibula Proximal
• AO Classification 42 – Tibia/Fibula Diaphysis
• AO Classification 43 – Tibia/Fibula Distal
• AO Classification 43 – Tibia/Fibula Malleoli

Last Updated on November 3, 2014 by orthonet