Magnetic resonance morphometry of the adult normal lumbar intervertebral space

Magnetic resonance morphometry of the adult normal lumbar intervertebral space 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Surgical and Radiologic Anatomy Springer Journals

Magnetic resonance morphometry of the adult normal lumbar intervertebral space

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer-Verlag France SAS, part of Springer Nature
Subject
Medicine & Public Health; Imaging / Radiology; Surgery; Anatomy; Orthopedics
ISSN
0930-1038
eISSN
1279-8517
DOI
10.1007/s00276-018-2048-7
Publisher site
See Article on Publisher Site

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

Journal

Surgical and Radiologic Anatomy – Springer Journals

Published: Jun 6, 2018

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