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ORIGINAL ARTICLE
Year : 2014  |  Volume : 2  |  Issue : 1  |  Page : 3-7

Magnetic resonance imaging in the diagnosis of lumbar canal stenosis in Indian patients


1 Departments of Orthopedics, ESI Model Hospital and Post Graduate Institute of Medical Sciences and Research, Basaidarapur, New Delhi, India
2 Department of Radiology, ESI Model Hospital and Post Graduate Institute of Medical Sciences and Research, Basaidarapur, New Delhi, India

Correspondence Address:
Supreethi Kohli
Tower 5, flat no 1403, Sushant Estate, Sector 52, Gurgaon, Haryana 122 002
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2319-2585.134200

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Introduction: Magnetic resonance imaging (MRI) has become the choice of imaging modality for lumbar canal stenosis (LCS) due to limitations and radiation risks of computed tomography (CT) and spinal radiography. The radiological criteria for diagnosis of LCS are still ambiguous. Aim of this study is to find out the radiological dimensions on MRI of lumbar spinal canal in Indian patients and the critical dimensions at which the symptoms occur. Materials and Methods: A cross-sectional study was conducted in ESI Hospital, New Delhi from July 2011 to 2013. Two study groups were studied, the symptomatic LCS group, consisted of 30 individuals of either sex in age group of 45-65 years. The control group consisted of 30 asymptomatic age matched individuals. MRI scans were performed on 1.5 Tesla scanner. Dimensions of lumbar canal at all the levels (L1-L5) of lumbar vertebra of 60 patients were measured. Results: In our study, in symptomatic group, narrowest mid-sagittal diameter antero-posterior (mean 10.61) was at L5-S1 level. The interligamentous diameter (ILD) showed no significant difference between the two groups. Lateral recess depths showed a significant difference between the two groups at all levels except L1 on right side and L1 and L2 on left side. Critical canal dimension was found to be 11.13 mm. Conclusion: MRI can effectively evaluate the lumbar canal stenosis. The critical canal dimensions at which symptoms of stenosis appear were 11.13.


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