Types of temporal bone fractures that cause facial paralysis

The type of temporal bone fracture most likely to cause facial palsy is the transverse temporal bone fracture, which is primarily the result of direct violence to the head and occiput and is usually accompanied by severe damage to the inner ear and bleeding from the cochlea and hemimelia. Patients experience vertigo, nausea, and vomiting in the case of labyrinth injuries, and about half of the patients have facial palsy as a complication. In addition to transverse fractures of the temporal bone, there are also longitudinal fractures of the temporal bone, mainly due to direct violence to the top of the head and temporal area, often combined with fractures or dislocation of the auditory tuberosity of the inner ear, damage to the tympanic chambers, and also ruptured and perforated tympanic membranes, bleeding from the external auditory canal or symptoms of meningeal tear and cerebrospinal fluid ear leakage. In a few cases, the facial nerve is involved and facial paralysis occurs. There is another rare type of temporal bone fracture called apical fracture, which mostly damages the cranial nerve, and the patient presents with ocular symptoms such as ptosis, pupil dilation, limited eye movement, diplopia, strabismus, or trigeminal neuralgia.