The Role of the Primitive Lateral Basilovertebral Anastomosis of Padget in Variations of the Vertebrobasilar Arterial System

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Abstract

Purpose: The primitive lateral basilovertebral anastomosis (PLBA) is an embryonic longitudinal anastomotic channel that transiently interconnects the developing branches of the vertebrobasilar system. This study reviews the anatomy of the PLBA and describes several variants associated with its partial persistence. Methods: Four types of vertebrobasilar anomalies linked to the PLBA are illustrated by 13 angiographic observations. Results: The angiographic appearances of (i) typical and atypical persistent trigeminal artery variants, (ii) common trunks of origin for one, two, or three cerebellar arteries, (iii) aberrant origins of the cerebellar arteries, and (iv) vertebrobasilar duplications are described. The PLBA is the cranial continuation of the ascending ramus of the dorsal radicular branch of the proatlantal artery (i.e., the radicular artery of C1) and represents the cranial equivalent of the posterior-lateral spinal artery. Conclusion: Several previously ill-defined or misunderstood variations of the vertebrobasilar system can be explained by partial persistence of the PLBA.

Original languageEnglish (US)
JournalAnatomical Record
DOIs
StateAccepted/In press - 2017

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arteries
persistence
Arteries
anatomy
anomaly
Anatomy
method

Keywords

  • Aberrant cerebellar artery
  • Dorcas Hager Padget
  • Persistent trigeminal artery variant
  • Primitive lateral basilovertebral anastomosis
  • Vertebrobasilar duplication

ASJC Scopus subject areas

  • Anatomy
  • Biotechnology
  • Histology
  • Ecology, Evolution, Behavior and Systematics

Cite this

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title = "The Role of the Primitive Lateral Basilovertebral Anastomosis of Padget in Variations of the Vertebrobasilar Arterial System",
abstract = "Purpose: The primitive lateral basilovertebral anastomosis (PLBA) is an embryonic longitudinal anastomotic channel that transiently interconnects the developing branches of the vertebrobasilar system. This study reviews the anatomy of the PLBA and describes several variants associated with its partial persistence. Methods: Four types of vertebrobasilar anomalies linked to the PLBA are illustrated by 13 angiographic observations. Results: The angiographic appearances of (i) typical and atypical persistent trigeminal artery variants, (ii) common trunks of origin for one, two, or three cerebellar arteries, (iii) aberrant origins of the cerebellar arteries, and (iv) vertebrobasilar duplications are described. The PLBA is the cranial continuation of the ascending ramus of the dorsal radicular branch of the proatlantal artery (i.e., the radicular artery of C1) and represents the cranial equivalent of the posterior-lateral spinal artery. Conclusion: Several previously ill-defined or misunderstood variations of the vertebrobasilar system can be explained by partial persistence of the PLBA.",
keywords = "Aberrant cerebellar artery, Dorcas Hager Padget, Persistent trigeminal artery variant, Primitive lateral basilovertebral anastomosis, Vertebrobasilar duplication",
author = "Lydia Gregg and Philippe Gailloud",
year = "2017",
doi = "10.1002/ar.23633",
language = "English (US)",
journal = "Anatomical Record",
issn = "1932-8486",
publisher = "John Wiley and Sons Inc.",

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TY - JOUR

T1 - The Role of the Primitive Lateral Basilovertebral Anastomosis of Padget in Variations of the Vertebrobasilar Arterial System

AU - Gregg, Lydia

AU - Gailloud, Philippe

PY - 2017

Y1 - 2017

N2 - Purpose: The primitive lateral basilovertebral anastomosis (PLBA) is an embryonic longitudinal anastomotic channel that transiently interconnects the developing branches of the vertebrobasilar system. This study reviews the anatomy of the PLBA and describes several variants associated with its partial persistence. Methods: Four types of vertebrobasilar anomalies linked to the PLBA are illustrated by 13 angiographic observations. Results: The angiographic appearances of (i) typical and atypical persistent trigeminal artery variants, (ii) common trunks of origin for one, two, or three cerebellar arteries, (iii) aberrant origins of the cerebellar arteries, and (iv) vertebrobasilar duplications are described. The PLBA is the cranial continuation of the ascending ramus of the dorsal radicular branch of the proatlantal artery (i.e., the radicular artery of C1) and represents the cranial equivalent of the posterior-lateral spinal artery. Conclusion: Several previously ill-defined or misunderstood variations of the vertebrobasilar system can be explained by partial persistence of the PLBA.

AB - Purpose: The primitive lateral basilovertebral anastomosis (PLBA) is an embryonic longitudinal anastomotic channel that transiently interconnects the developing branches of the vertebrobasilar system. This study reviews the anatomy of the PLBA and describes several variants associated with its partial persistence. Methods: Four types of vertebrobasilar anomalies linked to the PLBA are illustrated by 13 angiographic observations. Results: The angiographic appearances of (i) typical and atypical persistent trigeminal artery variants, (ii) common trunks of origin for one, two, or three cerebellar arteries, (iii) aberrant origins of the cerebellar arteries, and (iv) vertebrobasilar duplications are described. The PLBA is the cranial continuation of the ascending ramus of the dorsal radicular branch of the proatlantal artery (i.e., the radicular artery of C1) and represents the cranial equivalent of the posterior-lateral spinal artery. Conclusion: Several previously ill-defined or misunderstood variations of the vertebrobasilar system can be explained by partial persistence of the PLBA.

KW - Aberrant cerebellar artery

KW - Dorcas Hager Padget

KW - Persistent trigeminal artery variant

KW - Primitive lateral basilovertebral anastomosis

KW - Vertebrobasilar duplication

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