<prompt> Hangmans fracture isSubluxation of C5 over C6Fracture dislocation of C2Fracture dislocation of ankle jointFracture of odontoid  <response>: B Fracture dislocation of C2 Hangmans fracture is traumatic spondylolisthesis of axis C2 veebrae on C3Q due to fracture line passing through the neural arch pedicle pars interaicularisQ 