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Table 1 AO/ASIF classification of tibia shaft fractures [4]

From: Tibial shaft fractures in football players

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
  1. AO/ASIF, Arbeitsgemeinschaft Osteosynthesefragen/Association for the study of Internal Fixation.