Reproduction of the Lumbar Lordosis: A Comparison of Standing Radiographs Versus Supine Magnetic Resonance Imaging Obtained with Straightened Lower Extremities

Andreasen, Marianne Løgtholt; Langhoff, Lotte; Jensen, Tue Secher; Albert, H

doi:10.1016/j.jmpt.2006.11.009

Cited by 54 publications

(41 citation statements)

References 31 publications

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“…Lumbar lordosis and sacral slope measurements were in the supine position; nevertheless, it is well known that these measurements are similar to those obtained in a standing posture [40,41].…”

Section: Measurements In the Mid-sagittal Planementioning

confidence: 57%

Degenerative lumbar spinal stenosis and lumbar spine configuration

et al. 2010

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As life expectancy increases, degenerative lumbar spinal stenosis (DLSS) becomes a common health problem among the elderly. DLSS is usually caused by degenerative changes in bony and/or soft tissue elements. The poor correlation between radiological manifestations and the clinical picture emphasizes the fact that more studies are required to determine the natural course of this syndrome. Our aim was to reveal the association between lower lumbar spine configuration and DLSS. Two groups were studied: the first included 67 individuals with DLSS (mean age 66 ± 10) and the second 100 individuals (mean age 63.4 ± 13) without DLSS-related symptoms. Both groups underwent CT images (Philips Brilliance 64) and the following measurements were performed: a crosssection area of the dural sac, vertebral body dimensions (height, length and width), AP diameter of the bony spinal canal, lumbar lordosis and sacral slope angles. All measurements were taken at L3 to S1. Vertebral body lengths were significantly greater in the DLSS group at all levels compared to the control, whereas anterior vertebral body heights (L3, L4, L5) and middle vertebral heights (L3, L5) were significantly smaller in the LSS group. Lumbar lordosis, sacral slope and bony spinal canal were significantly smaller in the DLSS compared to the control. We conclude that the size and shape of vertebral bodies and canals significantly differed between the study groups. A tentative model is suggested to explain the association between these characteristics and the development of degenerative spinal stenosis.

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Section: Measurements In the Mid-sagittal Planementioning

confidence: 57%

Degenerative lumbar spinal stenosis and lumbar spine configuration

et al. 2010

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“…Radiologic measurements cannot be automatically transferred from one position to another [4 -8]. Only few studies have examined positiondependent measurement or the interchangeability of radiologic technologies in lumbar spine imaging [4,6]. Regarding the interchangeability of CT measurements in supine position with upright conventional sagittal radiographs, CT measurements have been shown to be an inappropriate tool for baseline assessment of sagittal lordosis of the injured thoracolumbar spine if upright conventional sagittal plane radiographs are used for follow-up measurements [4].…”

Section: Objectivesmentioning

confidence: 99%

“…Regarding the interchangeability of CT measurements in supine position with upright conventional sagittal radiographs, CT measurements have been shown to be an inappropriate tool for baseline assessment of sagittal lordosis of the injured thoracolumbar spine if upright conventional sagittal plane radiographs are used for follow-up measurements [4]. One investigator using MRI measurements in supine position showed that lumbar lordosis visible in upright position can be reproduced by placing the patient in supine position with straightened legs [9]. Other studies have shown good correlations for Cobb angles depending on the particular curve severity in adolescent idiopathic scoliosis [10].…”

Section: Objectivesmentioning

confidence: 99%

Comparison of Lumbar Lordosis in Lateral Radiographs in Standing Position with supine MR Imaging in consideration of the Sacral Slope

Benditz¹,

Boluki²,

Weber³

et al. 2016

Fortschr Röntgenstr

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ZUSAMMENFASSUNGZiel Ziel dieser retrospektiven Studie war es, den Einfluss des "Sacral Slope" auf den Zusammenhang zwischen der gemessenen lumbalen Lordose in lateralen Röntgenaufnahmen der Wirbelsäule im Stehen und liegenden MRT Aufnahmen zu untersuchen. Dieser Zusammenhang ist in der Literatur weitgehend unbekannt. Bisherige Studien haben Zusammenhänge für die thorakale Wirbelsäule gezeigt, jedoch nicht für die lumbalen Anteile. Methods MR images and standing lateral radiographs of 63 patients without actual low back pain or radiographic pathologies of the lumbar spine were analyzed. Standing radiographic measurements included the sagittal parameters pelvic incidence (PI) pelvic tilt (PT), and sacral slope (SS); MR images were used to additionally measure lumbar L1-S1 lordosis and single level lordosis. Differences between radiographic and MRI measurements were analyzed and divided into 4 subgroups of different sacral slope according to Roussouly's classification.Results Global lumbar lordosis (L1-S1) was 44.99°(± 10 754) on radiographs and 47.91°(± 9.170) on MRI, yielding a clinically relevant correlation (r = 0.61, p < 0.01). Measurements of single level lordosis only showed minor differences. At all levels except for L5 / S1, lordosis measured by means of standing Musculoskeletal System 233Benditz A et al.

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“…[16][17][18][19][20][21] The five lumbar segments play a fundamental role in maintaining posture when upright. 22 Also, many methods of the lordosis angle measuring on standard radiograms and MRI have been proposed. The Cobb method and its modifications are the gold standard to date.…”

Section: Discussionmentioning

confidence: 99%

Quantitative evaluation of the lumbosacral sagittal alignment in degenerative lumbar spinal stenosis

Макиров¹,

Yuz²,

Jahaf³

et al. 2015

Int J Spine Surg

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Goal of the study This study intends to develop a method of quantitative sagittal balance parameters assessment, based on a geometrical model of lumbar spine and sacrum. MethodsOne hundred eight patients were divided into 2 groups. In the experimental group have been included 59 patients with lumbar spinal stenosis on L1-5 level. Forty-nine healthy volunteers without history of any lumbar spine pathlogy were included in the control group. All patients have been examined with supine MRI. Lumbar lordosis has been adopted as circular arc and described either anatomical (lumbar lordosis angle), or geometrical (chord length, circle segment height, the central angle, circle radius) parameters. Moreover, 2 sacral parameters have been assessed for all patients: sacral slope and sacral deviation angle. Both parameters characterize sacrum disposition in horizontal and vertical axis respectively. ResultsSignificant correlation was observed between anatomical and geometrical lumbo-sacral parameters. Significant differences between stenosis group and control group were observed in the value of the "central angle" and "sacral deviation" parameters. We propose additional parameters: lumbar coefficient, as ratio of the lordosis angle to the segmental angle (Kl); sacral coefficient, as ratio of the sacral tilt (ST) to the sacral deviation (SD) angle (Ks); and assessment modulus of the mathematical difference between sacral and lumbar coefficients has been used for determining lumbosacral balance (LSB). Statistically significant differences between main and control group have been obtained for all described coefficients (p = 0.006, p = 0.0001, p = 0.0001, accordingly). Median of LSB value of was 0.18 and 0.34 for stenosis and control groups, accordingly. ConclusionBased on these results we believe that that spinal stenosis is associated with an acquired deformity that is measureable by the described parameters. It's possible that spinal stenosis occurs in patients with an LSB of 0.2 or less, so this value can be predictable for its development. It may suggest that spinal stenosis is more likely to occur in patients with the spinal curvature of this type because of abnormal distribution of the spine loads. This fact may have prognostic significance for develop vertebral column disease and evaluation of treatment results.keywords: sagittal lumbosacral balance, lumbar lordosis, lordosis angle, lumbosacral sagittal alignment volume 9 article 68

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Reproduction of the Lumbar Lordosis: A Comparison of Standing Radiographs Versus Supine Magnetic Resonance Imaging Obtained with Straightened Lower Extremities

Cited by 54 publications

References 31 publications

Degenerative lumbar spinal stenosis and lumbar spine configuration

Degenerative lumbar spinal stenosis and lumbar spine configuration

Comparison of Lumbar Lordosis in Lateral Radiographs in Standing Position with supine MR Imaging in consideration of the Sacral Slope

Quantitative evaluation of the lumbosacral sagittal alignment in degenerative lumbar spinal stenosis

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