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Updated: Nov 6, 2025

Precision Measurements and Parametric Models of Vertebral Endplates

Precision Measurements and Parametric Models of Vertebral Endplates

Published on: September 17, 2019

Morphometric Measurement of Lower Lumbar Intervertebral Foramina Based on Digital Three-Dimensional Simulation.

Jian-Hui Dai¹, Zheng-Xi Yu, Xing Li

¹Minimally Invasive Spinal Surgery, The Affiliated Hospital of Putian University, Southern Medical University, Putian 351100, Fujian, China.

Turkish Neurosurgery

|May 12, 2021

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This study used 3D models to analyze lumbar intervertebral foramina morphology. Findings show foraminal size decreases inferiorly and with age, aiding endoscopic surgery guidance.

Area of Science:

Spinal anatomy and biomechanics
Medical imaging and simulation
Minimally invasive surgical techniques

Background:

Accurate anatomical knowledge of lumbar intervertebral foramina is crucial for safe endoscopic spinal surgery.
Existing methods for assessing foraminal dimensions may lack precision and individualization.

Purpose of the Study:

To investigate the morphological characteristics of lower lumbar intervertebral foramina using a high-fidelity 3D simulation model.
To evaluate the utility of this 3D model for guiding endoscopic procedures through the intervertebral foramina.

Main Methods:

Computed tomography (CT) scans of 100 disease-free individuals were used to create patient-specific 3D lumbar spine models.
Stereoscopic measurements of longitudinal and transverse foraminal diameters were performed directly on the 3D models.

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Statistical analysis (t-test, ANOVA) was employed to compare measurements based on sex and age.

Main Results:

Average longitudinal and transverse diameters of the lower lumbar intervertebral foramina decreased in the inferior direction.
Foraminal dimensions showed no significant differences between sexes or age groups, except for a decrease in longitudinal diameter with advancing age (P < 0.05).

Conclusions:

The developed 3D lumbar vertebrae simulation model accurately represents human lumbar spine anatomy.
This approach offers precise, individualized, and standardized guidance for endoscopic surgery targeting the lumbar intervertebral foramina.