Mathematical calculations for modeling the damaged vertebral body with adjacent discs and the sagittal angle in the thoracic and lumbar regions
https://doi.org/10.56618/20712693_2022_14_4_98
Abstract
INTRODUCTION: Based on the CT examination of the thoracic and lumbar spine, morphometry and mathematical calculations of the spinal segment of three adjacent vertebrae and intervertebral discs were performed in 25 patients of different sex and age to simulate the recovery of the damaged vertebral body and adjacent discs. Measurements were made using computer software in the RadiAnt viewer on the mid-sagittal section.
MATERIALS AND METHODS: The results of spiral computed tomography (SCT) of 25 patients (12 women and 13 men aged 18 to 60 years) who were treated in the neurosurgical department were taken for the study.
RESULTS: According to the results of statistical processing with a 95 % confidence interval, the following calculation error was obtained: when modeling the anterior and posterior dimensions of the damaged vertebral body — 0.7±0.2 mm; anterior and posterior dimensions of the damaged disc — 0.8±0.2 mm and 0.65±0.2 mm, respectively; anterior and posterior dimensions of the vertebral body and upper disc — 1.1±0.4 mm and 1.2±0.5 mm; anterior and posterior dimensions of the vertebral body with adjacent discs — 1.4 ± 0.4 mm and 1.3 ± 0.5 mm. When modeling the angle α: with violation of the anterior and posterior dimensions of the vertebral body and upper disc, the error in the calculations is 2.7±0.8 degrees; with violation of the anterior and posterior dimensions of the vertebral body and adjacent discs — 2.5±0.6 degrees.
DISCUSSION OF THE RESULTS: The obtained calculations can be used when planning a surgical intervention to restore the damaged spinal motion segment in the thoracic and lumbar regions and modeling to the original undamaged state.
About the Authors
V. D. Usikov
St. Petersburg State Budgetary Healthcare Institution “City Hospital № 26”, neurosurgical department № 1
Russian Federation
Russian Federation
Vladimir D. Usikov.
196247, Saint Petersburg
V. S. Kuftov
St. Petersburg State Budgetary Healthcare Institution “City Hospital № 26”, neurosurgical department № 1
Russian Federation
Russian Federation
Vladimir S. Kuftov.
196247, Saint Petersburg
D. N. Monashenko
St. Petersburg State Budgetary Healthcare Institution “City Hospital № 26”, neurosurgical department № 1
Russian Federation
Russian Federation
Dmitrii N. Monashenko.
196247, Saint Petersburg
A. A. Dolgushin
St. Petersburg State Budgetary Healthcare Institution “City Hospital № 26”, neurosurgical department № 1
Russian Federation
Russian Federation
Artem A. Dolgushin.
196247, Saint Petersburg
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Review
For citations:
Usikov V.D., Kuftov V.S., Monashenko D.N., Dolgushin A.A. Mathematical calculations for modeling the damaged vertebral body with adjacent discs and the sagittal angle in the thoracic and lumbar regions. Russian Neurosurgical Journal named after Professor A. L. Polenov. 2022;14(4):98-110. (In Russ.) https://doi.org/10.56618/20712693_2022_14_4_98
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