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AO/ASIF classification of tibia shaft fractures [4]
| Type | Fracture | Subclassification |
| A | Simple | A1 – spiral |
| A2 – oblique | ||
| A3 – transverse | ||
| B | Wedge | B1 – spiral wedge |
| B2 – bending wedge | ||
| B3 – fragmented wedge | ||
| C | Complex | C1 – spiral |
| C2 – segmental | ||
| C3 – irregular |
AO/ASIF, Arbeitsgemeinschaft Osteosynthesefragen/Association for the study of Internal Fixation.
