Transverse fractures 20%of Temporal Bone fractures Forces in the Antero- Posterion【w水 r Groove of greater petrosal rer direction on floor of skull Geniculum of farial nerv Inner ear injury ane of anterior(suo Cochlear nerve 50% Facial nerve taal nerve ( vI Opening of intemal Involvement Vestibulocochlear nerve (vIll) Lateral (horizontal) EAC intact semicircular canal Petrous part semicrcular canalTransverse fractures ◼ 20% of Temporal Bone Fractures ◼ Forces in the Antero-Posterior direction ◼ Inner ear injury ◼ 50% Facial Nerve Involvement ◼ EAC intact