AN APPROPRIATE subtitle for this presentation could be "The Anatomy of the Endolymphatic Sac in Relation to the Problems of Surgical Approach," or more precisely, "The Vestibular Aqueduct, the Structures that It Contains and to Which It Is Related."
A report on applied anatomy requires consideration of the form and relations of the vestibular aqueduct as one of the transcapsular channels that bring the labyrinthine spaces into connection with the cranial cavity; this involves review of their varying spatial interrelationships on the posterior surface of the petrous part of the temporal bone, and of differences in their contents. For reasons familiar to all otologists, this aspect of aural surgery currently subordinates all others because of its direct connection with the physiological bases of Meniere's disease. Needless to say, the anatomic factors are the structure of the endolymphatic duct and sac and of the blood vessels in the wall of the
Anson BJ. Endolymphatic Hydrops. Arch Otolaryngol. 1969;89(1):70–84. doi:10.1001/archotol.1969.00770020072012
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