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Dimensions and Anatomical Variants of the Foramen Transversarium of Typical Cervical Vertebrae.

Sangari SK, Dossous PM, Heineman T, Mtui EP - Anat Res Int (2015)

Bottom Line: The mean distance of the transverse foramen from the medial margin of uncinate process is an important landmark to avoid vertebral artery laceration and was 5.0 ± 0.87 mm (range: 3.5-7.9 mm) on the right and 5.0 ± 1.0 mm (range: 3.2-7.7 mm) on the left side.No statistically significant difference was observed between the right and left sides.The accessory transverse foramina seen in 24% of vertebrae suggest duplications or fenestrations in the vertebral artery.

View Article: PubMed Central - PubMed

Affiliation: Program in Anatomy and Body Visualization, Weill Cornell Medical College, Cornell University, New York, NY 10065, USA.

ABSTRACT
The study was conducted on random sample of seventy-one dried, typical cervical vertebrae (C3-C6). The data on the age, sex, and built was not available. Using vernier calipers with 0.01 mm accuracy, the anteroposterior and transverse diameters of transverse foramina and their distance from the medial margin of the uncinate process were measured bilaterally. The mean diameter of the right/left transverse foramen varied from 2.54 mm to 7.79 mm (mean = 5.55 ± 0.87 mm) and from 2.65 mm to 7.35 mm (mean = 5.48 ± 0.77 mm), respectively. The transverse foramen was less than 3.5 mm in three vertebrae on the right and two on the left. The osteocytes observed in 21.3% of specimens and the narrow transverse foramen may place patients at risk for vertebrobasilar insufficiency or thrombus formation. The mean distance of the transverse foramen from the medial margin of uncinate process is an important landmark to avoid vertebral artery laceration and was 5.0 ± 0.87 mm (range: 3.5-7.9 mm) on the right and 5.0 ± 1.0 mm (range: 3.2-7.7 mm) on the left side. No statistically significant difference was observed between the right and left sides. The accessory transverse foramina seen in 24% of vertebrae suggest duplications or fenestrations in the vertebral artery.

No MeSH data available.


Related in: MedlinePlus

Typical cervical vertebra showing measurements of the transverse foramen: A: transverse diameter, B: anteroposterior diameter, C: distance from the medial margin of the uncinate process to the medial margin of the transverse foramen.
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fig1: Typical cervical vertebra showing measurements of the transverse foramen: A: transverse diameter, B: anteroposterior diameter, C: distance from the medial margin of the uncinate process to the medial margin of the transverse foramen.

Mentions: Using a VWR digital stainless steel vernier caliper with 0.01 mm accuracy, the anteroposterior and transverse diameters of transverse foramina were measured bilaterally. The caliper was placed within each foramen and the widest transverse and anteroposterior diameters were measured. The mean of the transverse and anteroposterior diameter of each foramen was calculated to estimate the mean diameter of each transverse foramen. The distance between the medial margin of the uncinate process and the medial end of the transverse foramen was estimated with the help of vernier calipers (Figure 1).


Dimensions and Anatomical Variants of the Foramen Transversarium of Typical Cervical Vertebrae.

Sangari SK, Dossous PM, Heineman T, Mtui EP - Anat Res Int (2015)

Typical cervical vertebra showing measurements of the transverse foramen: A: transverse diameter, B: anteroposterior diameter, C: distance from the medial margin of the uncinate process to the medial margin of the transverse foramen.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4581543&req=5

fig1: Typical cervical vertebra showing measurements of the transverse foramen: A: transverse diameter, B: anteroposterior diameter, C: distance from the medial margin of the uncinate process to the medial margin of the transverse foramen.
Mentions: Using a VWR digital stainless steel vernier caliper with 0.01 mm accuracy, the anteroposterior and transverse diameters of transverse foramina were measured bilaterally. The caliper was placed within each foramen and the widest transverse and anteroposterior diameters were measured. The mean of the transverse and anteroposterior diameter of each foramen was calculated to estimate the mean diameter of each transverse foramen. The distance between the medial margin of the uncinate process and the medial end of the transverse foramen was estimated with the help of vernier calipers (Figure 1).

Bottom Line: The mean distance of the transverse foramen from the medial margin of uncinate process is an important landmark to avoid vertebral artery laceration and was 5.0 ± 0.87 mm (range: 3.5-7.9 mm) on the right and 5.0 ± 1.0 mm (range: 3.2-7.7 mm) on the left side.No statistically significant difference was observed between the right and left sides.The accessory transverse foramina seen in 24% of vertebrae suggest duplications or fenestrations in the vertebral artery.

View Article: PubMed Central - PubMed

Affiliation: Program in Anatomy and Body Visualization, Weill Cornell Medical College, Cornell University, New York, NY 10065, USA.

ABSTRACT
The study was conducted on random sample of seventy-one dried, typical cervical vertebrae (C3-C6). The data on the age, sex, and built was not available. Using vernier calipers with 0.01 mm accuracy, the anteroposterior and transverse diameters of transverse foramina and their distance from the medial margin of the uncinate process were measured bilaterally. The mean diameter of the right/left transverse foramen varied from 2.54 mm to 7.79 mm (mean = 5.55 ± 0.87 mm) and from 2.65 mm to 7.35 mm (mean = 5.48 ± 0.77 mm), respectively. The transverse foramen was less than 3.5 mm in three vertebrae on the right and two on the left. The osteocytes observed in 21.3% of specimens and the narrow transverse foramen may place patients at risk for vertebrobasilar insufficiency or thrombus formation. The mean distance of the transverse foramen from the medial margin of uncinate process is an important landmark to avoid vertebral artery laceration and was 5.0 ± 0.87 mm (range: 3.5-7.9 mm) on the right and 5.0 ± 1.0 mm (range: 3.2-7.7 mm) on the left side. No statistically significant difference was observed between the right and left sides. The accessory transverse foramina seen in 24% of vertebrae suggest duplications or fenestrations in the vertebral artery.

No MeSH data available.


Related in: MedlinePlus