UCSD Musculoskeletal Radiology

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MSK Classifications

Effendi Hangman Fx Classification

 

Hangman Fx.  Effendi classification

    Grade 1: extension injury, displacement < 2mm. Rx flexion.

 

    Grade 2: extension injury, displacement >2mm and angulation. Rx flexion.

 

    Grade 3:  flexion injury, C2-3 facet joint subluxation/dislocation. Rx extension.