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06.06.2018 | Original Article

Magnetic resonance morphometry of the adult normal lumbar intervertebral space

verfasst von: Apostolos H. Fyllos, Dimitrios L. Arvanitis, Apostolos H. Karantanas, Sokratis E. Varitimidis, Michael Hantes, Aristeidis H. Zibis

Erschienen in: Surgical and Radiologic Anatomy | Ausgabe 9/2018

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Abstract

Purpose

This study aims to: (a) quantify and evaluate normal relationships between neighboring spinal units using MR imaging indices, (b) propose an easy-to-apply-and-reproduce method of estimating the correct amount of distraction when surgically restoring a collapsed intervertebral disc, based on individualized measurements.

Methods

This is a retrospective cross-sectional MR imaging study of 119 adult subjects, aged 18–54, asymptomatic for low back pain. Each of the examinees should demonstrate two or more consecutive intervertebral discs classified as Pfirrmann grade I or II to be included. We measured and studied the relationships of disc height index, Dabbs index, Farfan index, disc convexity index and mean and posterior disc height per spinal level using multiple regression analysis. All measurements were tested for intra- and interobserver agreement by two raters.

Results

DHI, Dabbs, Farfan, and mean disc height had a statistically significant correlation with the spinal level and age. Our results were highly reproducible, with excellent inter- and intraobserver agreement and reliability between two raters (ICC = 0.992 and 0.994, respectively). Furthermore, we expressed each intervertebral space as a percentage of its adjacent space, introducing the coefficient α factor for every intervertebral space.

Conclusions

Our results suggest that a normal values’ database to refer during preoperative planning of correction of a degenerated intervertebral disc is feasible. Our study offers new anatomical and radiological insight in terms of spinal measurements and their potential correlation with current surgical techniques. A new approach for calculating disc space as an expression of its adjacent disc has been introduced with various potential applications.

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Titel: Magnetic resonance morphometry of the adult normal lumbar intervertebral space
verfasst von: Apostolos H. Fyllos
Dimitrios L. Arvanitis
Apostolos H. Karantanas
Sokratis E. Varitimidis
Michael Hantes
Aristeidis H. Zibis
Publikationsdatum: 06.06.2018
Verlag: Springer Paris
Erschienen in: Surgical and Radiologic Anatomy / Ausgabe 9/2018
Print ISSN: 0930-1038
Elektronische ISSN: 1279-8517
DOI: https://doi.org/10.1007/s00276-018-2048-7

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Magnetic resonance morphometry of the adult normal lumbar intervertebral space