Abstract
To assess the advantage of identification of the endolymphatic sac during the operative procedure, we measured the size and localization of the endolymphatic sac in seven patients with Meniere's disease, during the epidural shunt operation (Kitahara).
The measured points are as follows; (1) Sinus Posterior Canal Line, (2) Lateral Canal Line Isthmus, (3) Posterior Canal End Isthmus, (4) Posterior Canal Line Isthmus, (5) α; Angle from Posterior Canal Lane to Center of Sac, (6) Isthmus Inferior Edge of the Sac, (7) Isthmus Inferior Edge, (8) Inferior Edge Superior.
From the values obtained, it appears easier to identify the endolymphatic sac from the Posterior Canal End than from the Lateral Canal Line.
