Most potential route for transmission of Meningitis from CNS to Inner ear is:
Most potential route for transmission of Meningitis from CNS to Inner ear is Cochlear Aqueduct. The scala tympani is closed by secondary tympanic membrane; it is also connected with the subarachnoid space through the aqueduct of cochlea. Hence the infections from meninges can spread to inner ear.
Cochlear Aqueduct
Endolymphatic sac
Vestibular Aqueduct
Hyl's fissure