<prompt> Hangmans fracture is-Subluxation of C5 over C6Fracture dislocation of C2Fracture dislocation of ankle jointFracture of odontoid  <response>: Hangmans fracture is bilateral fracture of the pars interaicularis of axis c2 with traumatic sponsylolisthesis of axis C2 over C3 veebrae. Thus Hangmans fracture is not simply a fracture, but fracture dislocation of axis C2. Ref: Surgical treatment of ohopedic trauma 4the p.116 