Fraction of cases in which a communication between the subarachnoid space of the posterior cranial fossa and the perilymphatic space of the cochlea is patent (open, unobstructed)

Value 93 %
Organism Human Homo sapiens
Reference Sakka L, Coll G, Chazal J. Anatomy and physiology of cerebrospinal fluid. Eur Ann Otorhinolaryngol Head Neck Dis. 2011 Dec128(6):309-16. doi: 10.1016/j.anorl.2011.03.002 p.314 left column 2nd paragraphPubMed ID22100360
Primary Source [36] Gopen Q, Rosowski JJ, Merchant SN. Anatomy of the normal human cochlear aqueduct with functional implications. Hear Res. 1997 May107(1-2):9-22PubMed ID9165342
Method Primary source abstract: "The first part of this paper describes the anatomy of the normal human cochlear aqueduct as determined from a study of 101 temporal bones."
Comments P.314 left column 2nd paragraph: "The cochlear aqueduct, situated in the petrous part of the temporal bone, establishes a communication between the subarachnoid space of the posterior cranial fossa and the perilymphatic space of the cochlea. This communication, patent in 93% of cases [primary source], would explain the impact of intracranial pressure variations on cochlear function, such as tinnitus occurring at high altitude and after ventriculoperitoneal shunting."
Entered by Uri M
ID 117124