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Scaphoid Fracture AO Classification

A Type: Tubercle Avulsion Fracture A1: Tubercle Cortical Avulsion Fracture
A2: Larger Tubercle Fracture
A3: Multiple Tubercle Fractures
B Type: Waist Fracture B1: Transverse Fracture
B2: Oblique Fracture
B3: Longitudinal Fracture
C Type: Comminuted or Fragmented Fracture C1: Comminuted Fracture of the Medial Articular Surface of the Scaphoid
C2: Comminuted Fracture of the Lateral Articular Surface of the Scaphoid
C3: Comminuted Fracture of Both Medial and Lateral Articular Surfaces of the Scaphoid
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