Morphologic characterization of the superior cerebellar artery. A direct anatomic study

Luis Ballesteros-Acuña, Fabián Gómez-Torres, H. Yesid Estupiñán

Research output: Contribution to journalArticlepeer-review

Abstract

Aim: to determine the morphological features of superior cerebellar artery and its branches in a Colombian population sample. Materials and methods: Ninety-three superior cerebellar arteries from cadaveric donors were studied. In each sample, the vertebral arteries were injected with semi-synthetic resin. The biometric and morphological variables of superior cerebellar arteries were measured. Results: all samples from the superior cerebellar arteries originated from the basilar artery at a distance of 27.22 ± 3.13 mm from the vertebrobasilar junction. A symmetric origin was identified in 40 samples (43%), asymmetric in 53 (57%), unilateral duplication in 41 samples (22,1%). The superior cerebellar artery bifurcated in rostral and caudal branches, mainly in the second segment in 66 samples (47.5%). This excluding cases with duplication and agenesis of SCA. The superior cerebellar artery caliber in the anterior segment (1.46 ± 0.20 mm) was significantly larger than in the lateral segment (1.37 ± 0.18 mm) (p = 0.001) and in the cerebellum-mesencephalic segment (1.25 ± 0.22 mm) (p < 0.001). In its course, the artery contacted the trigeminal nerve in 47 samples (25.9%) and the trochlear nerve passed between the rostral and caudal branches in 92 samples (51.1%). Conclusion: this study reported the highest incidence of early SCA bifurcation (40.8%) and a detailed morphometric characterization of its cortical branches. Knowledge that benefices the diagnostic imaging, clinical and surgical approach of the SCA.

Original languageEnglish
Article number100150
JournalTranslational Research in Anatomy
Volume25
DOIs
StatePublished - Nov 2021
Externally publishedYes

Keywords

  • Anatomical variation
  • Basilar artery
  • Cortical branches
  • Superior cerebellar artery

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