<prompt> Which of the following isare true about lefos fractureIt is fracture of zygomatic boneMay cause CSF rhinorrheaType 1: complete separation of facial bones form the cranial bonesClassified as types 1 to 5  <response>: Answer- B.May cause CSF rhinorrheaLe Fo I transverse- crosses lower pa of nasal septum, maxillary antra and the pterygoid plates.Le Fo II pyramidal- passes through the root ofnose, lacrimal bone, floor oforbit, upper pa of maxillary sinus and pterygoid platesLe Fo III craniofacial dysjunction- There is complete separation offacial bones from the cranial bones.Clinical features of maxillary fracture-Malocclusion of teethMobility in the maxillaCSF rhinorrhoea. 