MORPHOMETRIC CHARACTERISTICS OF THE INTERVERTEBRAL FORAMENA IN THE LUMBAR REGON OF THE SPINE



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Abstract

Morphoscopic and morphometric characteristics of the intervertebral foramen (IF) of the lumbosacral spine were evaluated in 70 patients of both sexes aged 25-74 years using the data of multispiral computed tomography (CT) and special software programs. The comparative data analysis was performed according to lumbar level of IF and patient gender. Four IF forms were described: elliptic, reniform, pear-shaped, teardrop-shaped. The frequency of occurrence of various forms of IF was determined. The main morphometric parameters estimated included: the height of intervertebral space at IF level; IF height; the distance from the top edge of the underlying vertebral pedicle to the spinal nerve; IF upper and lower diameters; IF area; availability zone (reserve space) area for transforaminal endoscopic approach to the structures of vertebral canal. A reduction of all studied parameters from the upper lumbar segments to the lumbar-sacral transition was detected. The results obtained can be used as the indicators of the range of the norm in the diagnosis of foraminal stenosis, as well as in planning of endoscopic transforaminal approach to the structures of lumbar spine and the vertebral canal.

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About the authors

G. G. Bulyshchenko

S. M. Kirov Military Medical Academy

Email: drbulish@gmail.com

A. I. Gaivoronskiy

S. M. Kirov Military Medical Academy

I. V. Gaivoronskiy

S. M. Kirov Military Medical Academy

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