title: [The specific features of the anatomical structure of the artery of labyrinth (an anatomical and topographical study)].
abstract: The objective of the present work was to study syntopy of the artery of labyrinth using block-preparations of the posterior cranial fossa, variants of its branching-off from the vertebro-basiliar basin (VBB), and peculiar features of its anatomical structure. A total of 12 block-preparations of the posterior cranial fossa were available for the investigation. They were preliminarily stained with red latex and fixed in a three-point system. These procedures were followed by retrosigmoid craniotomy, opening of dura mater in the supero-lateral part of the cerebellomedulllary cistern, traction of the cerebellum, and blunt separation of the basiliar artery (BA). Variants of branching of the antero-inferior cerebellar artery (AICA) and branching of the artery of labyrinth from AICA were studied. It was shown that the artery of labyrinth branches off from the antero-inferior cerebellar artery in 100% of the cases. The latter artery formed a loop in 14% of the cases (3 ears). The average diameter of the labyrinth artery was 0.32 mm and its mean area 0.06 sq.cm. The artery of labyrinth branched off from the posterior para-stem segment of the antero-inferior cerebellar artery in 42.6% of the cases (9 ears), and from the anterior para-stem segment of AICA in 14.2% of the cases (3 ears). Within the conventional «rhombus», the artery of labyrinth was straight in 76.2% of the cases (16 ears) and arc-shaped in 23.8% (4 ears).
authors.affiliation: L.I. Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow Health Department, Moscow, Russia, 117152.
authors.forename: A I
authors.initials: AI
authors.lastname: Kryukov
authors.affiliation: L.I. Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow Health Department, Moscow, Russia, 117152.
authors.forename: N L
authors.initials: NL
authors.lastname: Kunel'skaya
authors.affiliation: N.V. Sklifosovsky Research Institute of Emergency Medicine, Moscow, Russia, 107045.
authors.forename: V V
authors.initials: VV
authors.lastname: Krylov
authors.affiliation: N.V. Sklifosovsky Research Institute of Emergency Medicine, Moscow, Russia, 107045.
authors.forename: A G
authors.initials: AG
authors.lastname: Vinokurov
authors.affiliation: L.I. Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow Health Department, Moscow, Russia, 117152.
authors.forename: G Yu
authors.initials: GY
authors.lastname: Tsarapkin
authors.affiliation: L.I. Sverzhevsky Research Clinical Institute of Otorhinolaryngology, Moscow Health Department, Moscow, Russia, 117152.
authors.forename: V V
authors.initials: VV
authors.lastname: Mishchenko
mesh_terms: D001488:Basilar Artery / Q000033:anatomy & histology* / Q000473:pathology; D003388:Cranial Fossa, Posterior / Q000098:blood supply* / Q000473:pathology; D007758:Ear, Inner / Q000098:blood supply* / Q000473:pathology; D006801:Humans; D014711:Vertebral Artery / Q000033:anatomy & histology* / Q000473:pathology