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Two examples of hangman’s fractures, or bilateral pedicle/posterior arch fractures of C2. On the more subtle fracture (A), note that the spinolaminar line from C1 to C3 (dotted line) falls greater than 2 mm posterior to the spinolaminar junction of C2 (double-headed arrow). Also note the fat C2 vertebral body relative to that of C3 (yellow single line versus yellow double lines).
