Lifetime morphological characteristics of the LIV-LV intervertebral disc in young and middle-aged adults

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Abstract

Morphoscopic and morphometric characteristics of the LIV–LV intervertebral disc were assessed according to magnetic resonance images of the lumbar spine of 90 patients (66 men, 24 women). The morphometric parameters of the LIV–LV intervertebral disc and nucleus pulposus were compared between young (18–44 years old) and middle-aged (45–60 years old) adults and in groups determined by sex and body type. In addition, morphoscopic characteristics, namely, the shape of the intervertebral disc and nucleus pulposus in the axial plane, were evaluated. Results. In normal intervertebral disc, LIV–LV on the axial section most often presents in a kidney-shaped (51%), elliptical (45%), and round (4%) form. The LIV–LV nucleus pulposus normally has an oval (50%), kidney (45%), and less often a lemniscate (5%) shape. The shape and individual morphometric parameters of the intervertebral disc and nucleus pulposus of the LIV–LV segment have significant sex differences. Thus, the most lateral height of the intervertebral disc on the right and left, anteroposterior size and area of the intervertebral disc, and anteroposterior size, width, and area of the nucleus pulposus are significantly larger in men than in women. When assessing the influence of body type on intervertebral disc structural features, no significant differences in its shape were found between asthenics, normo- and hypersthenics, while individual dimensions (intervertebral disc height in the center and its dorsal height) were significantly larger in hypersthenics. The kidney-shaped form of the nucleus pulposus was significantly more common in asthenics and the oval form in hypersthenics, whereas the morphometric parameters of the nucleus pulposus did not significantly differ between extreme body types. Statistically significant differences in the shape of the nucleus pulposus were found between age groups. The results of the analysis of morphometric characteristics revealed the intervertebral disc height tended to decrease in middle-aged people compared with young people. The results can be used in planning spine surgery and designing artificial intervertebral discs.

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About the authors

Maxim A. Priymak

1586th Military Clinical Hospital

Email: boec.87@inbox.ru
ORCID iD: 0000-0003-4984-9526
SPIN-code: 6826-2947

senior resident

Russian Federation, Podolsk

Alexei I. Gaivoronsky

Military Medical Academy of S.M. Kirov

Email: solnushko12@mail.ru
ORCID iD: 0000-0003-1886-5486
SPIN-code: 7011-6279

doctor of medical sciences, professor

Russian Federation, Saint Petersburg

Ivan V. Gaivoronsky

Military Medical Academy of S.M. Kirov; Saint Petersburg State University; Scientific Medical Research Center of V.A. Almazova

Email: i.v.gaivoronsky@mail.ru
ORCID iD: 0000-0002-7232-6419
SPIN-code: 1898-3355

doctor of medical sciences, professor

Russian Federation, Saint Petersburg; Saint Petersburg; Saint Petersburg

Gennadii I. Nichiporuk

Military Medical Academy of S.M. Kirov; Saint Petersburg State University

Email: nichiporuki120@mail.ru
ORCID iD: 0000-0001-5569-7325
SPIN-code: 3532-1203

candidate of medical sciences, associate professor

Russian Federation, Saint Petersburg; Saint Petersburg

Maria G. Gaivoronskaya

Saint Petersburg State University; Scientific Medical Research Center of V.A. Almazova

Author for correspondence.
Email: solnushko12@mail.ru
ORCID iD: 0000-0003-4992-9702
SPIN-code: 2357-5440

doctor of medical sciences, associate professor

Russian Federation, Saint Petersburg; Saint Petersburg

Inga A. Goriacheva

Military Medical Academy of S.M. Kirov; Saint Petersburg State University

Email: smoriarti@yandex.ru
ORCID iD: 0000-0003-3064-7596
SPIN-code: 6705-8553

candidate of medical sciences, associate professor

Russian Federation, Saint Petersburg; Saint Petersburg

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Supplementary files

Supplementary Files
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1. JATS XML
2. Fig. 1. Morphometric study at the LIV–LV level in the axial plane: a — length and width of the intervertebral disc; b — length and width of the fibrous ring; c — length and width of the gelatinous nucleus

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3. Fig. 2. Shapes of intervertebral discs: a — kidney–shaped; b — elliptical; c — round

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4. Fig. 3. Forms of the nucleus pulposus: a — kidney–shaped; b — oval; c — lemniscate shape

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