<prompt> Blow-out fracture refers toFracture of orbitFracture of nasal septumFracture base of skullFracture of mandible  <response>: Isolated fractures of orbital floor, which occur when a large blunt object strikes the globes, are known as blow-out fractures Ref: Textbook of diseases of ENT; PL Dhingra;7th edition, pg 206 