Neurospine.  2019 Mar;16(1):34-40. 10.14245/ns.1836304.152.

Anatomical Relationship of the Vertebral Artery With the Lateral Recess: Clinical Importance for Posterior Cervical Foraminotomy

• Oh SW
• Singh R
• Adsul NM
• Noh JH
• Park JH
• Kim HS
• Jang IT
• Oh SH

• KMID: 2447808
• DOI: http://doi.org/10.14245/ns.1836304.152

Abstract

OBJECTIVE
Vertebral artery injuries during posterior cervical foraminotomy are rare, but can be fatal. Therefore, we investigated the anatomical correlation between the lateral recess and the vertebral artery.
METHODS
On axial cuts of cervical magnetic resonance imaging from 108 patients, we measured the distance between the vertebral arteries and the medial border of the facet joints. The anatomical vertebro-facet distance (AVFD), surgical vertebro-facet distance (SVFD), and vertebro-facet angle (VFA) were measured.
RESULTS
The mean AVFD values on the right side at the C3-4, C4-5, C5-6, and C6-7 levels showed statistically significant differences. On the right side, the mean SVFD values were equivalent to the AVFD values. The mean values of the VFA on the right side at all levels showed statistically significant differences. For all measurements, the greatest differences were seen between the C5-6 and C6-7 levels, and higher levels were associated with smaller distances from the lateral recess. The mean values of the AVFD on the right and left sides showed statistically significant differences at all levels, and the distances on the left were smaller than those on the right.
CONCLUSION
The vertebral artery is closer to the lateral recess at higher cervical levels than at lower cervical levels. The largest distances were found at the C5-6 and C6-7 levels, and the left vertebral arteries were closer to the lateral recess than the right vertebral arteries.

Keyword

Vertebral artery; Lateral recess; Posterior cervical foraminotomy

MeSH Terms

Foraminotomy*
Humans
Magnetic Resonance Imaging
Vertebral Artery*
Zygapophyseal Joint