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学科主题: 临床医学
题名:
Effect of lumbar angular motion on central canal diameter: positional MRI study in 491 cases
作者: Wei Feng2; Wang, Jeffrey1; Zou, Jun1; Hong, Soon-woo1; Zhang, Haihong1; He, Wubing1; Miyazaki, Masashi1; Lee, Sang-hun1; Alanay, Ahmet1
关键词: positional MRI ; lumbar spinal stenosis ; quantitative measure ; flexion and extension ; positional dependence
刊名: CHINESE MEDICAL JOURNAL
发表日期: 2010-06-05
DOI: 10.3760/cma.j.issn.0366-6999.2010.11.013
卷: 123, 期:11, 页:1422-1425
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Medicine, General & Internal
研究领域[WOS]: General & Internal Medicine
关键词[WOS]: SPINAL STENOSIS ; FORAMINA
英文摘要:

Background Lumbar spinal stenosis is a common problem that is receiving attention with the advent of novel treatment procedures. Prior positional MRI studies demonstrated lumbar canal diameter changes with flexion and extension. There have not been any studies to examine the amount of spinal canal diameter change relative to the amount of angular motion. The purpose of this study was to evaluate the correlation between the lumbar canal diameter change and the angular motion quantitatively.

Methods Positional MRI (pMRI) images for 491 patients, including 310 males and 181 females (16 years-85 years of age), were obtained with the subjects in sitting flexion 40 degree, upright, and with extension of 10 degrees within a 0.6 T Positional MRI scanner. Quantitative measurements of the canal diameter and segmental angle of each level in the sagittal midline plane were obtained for each position. Then the diameter change and angular motion were examined for correlation during flexion and extension with linear regression analysis.

Results The lumbar segmental angles were lordotic in all positions except L1-2 in flexion. The changes of canal diameters were statistically correlated with the segmental angular motions during flexion and extension (P <0.001). The amount of canal diameter change correlated with the amount of angular change and was expressed as a ratio.

Conclusions Positional MRI demonstrated the amount of spinal canal diameter change that was statistically correlated with the segmental angular motion of the spine during flexion and extension. These results may be used to predict the extent of canal diameter change when interspinous devices or positional changes are used to treat spinal stenosis and the amount of increased canal space may be predicted with the amount of angular or positional change of the spine. This may correlate with symptomatic relief and allow for improved success in the treatment of spinal stenosis. Chin Med J 2010;123(11):1422-1425

语种: 英语
WOS记录号: WOS:000278725700013
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/51301
Appears in Collections:北京大学第三临床医学院_骨科_期刊论文

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作者单位: 1.UCLA Spine Ctr, UCLA Sch Med, Santa Monica, CA 90404 USA
2.Peking Univ, Hosp 3, Dept Orthopaed, Beijing 100191, Peoples R China

Recommended Citation:
Wei Feng,Wang, Jeffrey,Zou, Jun,et al. Effect of lumbar angular motion on central canal diameter: positional MRI study in 491 cases[J]. CHINESE MEDICAL JOURNAL,2010,123(11):1422-1425.
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