scholarly journals Inclination of the small laminar slope angle leads to lumbar spinal stenosis due to hypertrophy of the ligamentum flavum

2021 ◽  
Vol 29 (2) ◽  
pp. 230949902110128
Author(s):  
Xiaosheng Yu ◽  
Junduo Zhao ◽  
Fan Feng ◽  
Yingchao Han ◽  
Guibin Zhong ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Ligamentum Flavum ◽  
Lumbar Disc ◽  
Slope Angle ◽  
Resonance Imaging ◽  
Significant Difference ◽  
Lumbar Spinal

Objective: This study was designed to investigate the relationship between the laminar slope angle (LSA) and the lumbar disc degenerative grade, the cross-section area (CSA) of multifidus muscle, the muscle-fat index, and the thickness of the ligamentum flavum. Methods: Retrospective analysis of 122 patients who were scheduled to undergo a lumbar operation for diagnoses associated with degenerative lumbar disease between January and December 2017. The L4–L5 disc grade was evaluated from preoperative sagittal T2-weighed magnetic resonance imaging of the lumber region; the CSA of the multifidus and muscle-fat index were measured at the L4 level, while the thickness of the ligamentum flavum was measured at the L4–L5 facet level from axis T2-weighed magnetic resonance imaging. The slope of the laminar was evaluated from preoperative three-dimensional computer tomography at the tip level of the facet joints and selected by the axis plane. Independent-sample T-tests were used to assess the association between age and measurement indices. Results: Our results showed that age was positively connected with the LSA of L4 and L5 in different patients, although there was no significant difference between age and the difference of the two segment LSA. Partial correlation analysis, excluding the interference of age, revealed a strong negative relationship between the LSA of L4 and the thickness of the ligamentum flavum, irrespective of whether we considered the left or right. However, there was no correlation with lumbar disc degenerative grade, the CSA of the multifidus, and the muscle-fat index. Conclusion: The thickness of the ligamentum flavum showed changes with anatomical differences in the LSA, but not the lumbar disc degenerative grade, the CSA of the multifidus, and the muscle-fat index. A small change in LSA may cause large mechanical stress; this may be one of the causative factors responsible for lumbar spinal stenosis.

X-RAY AND MAGNETIC RESONANCE IMAGING FEATURES IN PATIENTS WITH ACQUIRED LUMBAR SPINAL STENOSIS

2018 ◽  
Vol 8 (6) ◽  
pp. 151-156
Author(s):  
Trung Hoang Van ◽  
Cuong Le Van Ngoc
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Spinal Canal ◽  
Resonance Imaging ◽  
X Ray ◽  
Canal Stenosis ◽  
Lumbar Spinal Canal ◽  
Lumbar Spinal

Background: Lumbar spinal stenosis often associates with chronic pain described the abnormal narrowing of the lumbar spinal canal, resulting in compression of neural elements within the central spinal canal or the lateral recesses or the root canals or coordinate with each other. The purpose of this study was to describe and compare the plain X-ray and magnetic resonance imaging features of lumbar canal stenosis. Materials and methods: This was a cross-sectional study of 78 patients with an acquired lumbar spinal canal between October 2017 and May 2018. Results: The X-rays confirmed osteophytes in 92.3%, endplate sclerosis in 88.5% and disc space narrowing 62.8%. On MRI, 213 lumbar levels were lumbar spinal canal stenosis, 181 lumbar levels were evaluated for the grade of central spinal canal stenosis. Conclusions: X-ray examination has limitations in a diagnosis of lumbar spinal stenosis but also serves as a diagnostic aid. MRI is well diagnosed as spinal pathology as well as lumbar spinal stenosis. Key words: Lumbar spinal, Lumbar spinal stenosis, Magnetic resonance imaging (MRI), X-ray, Grading

scholarly journals Reliability of Readings of Magnetic Resonance Imaging Features of Lumbar Spinal Stenosis

Spine ◽  
2008 ◽  
Vol 33 (14) ◽  
pp. 1605-1610 ◽  
Author(s):  
Jon D. Lurie ◽  
Anna N. Tosteson ◽  
Tor D. Tosteson ◽  
Eugene Carragee ◽  
John Carrino ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Lumbar Spinal

scholarly journals Bilateral leg pain and unilateral calf atrophy caused by polymyositis accompanying lumbar spinal stenosis and disc herniation: a case report

2022 ◽  
Vol 50 (1) ◽  
pp. 030006052110694
Author(s):  
In-Hwa Baek ◽  
Hyung-Youl Park ◽  
Ho-Young Jung ◽  
Jun-Seok Lee
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Leg Pain ◽  
Resonance Imaging ◽  
Muscle Enzyme ◽  
Lumbar Spinal ◽  
Calf Pain

Polymyositis is a subgroup of idiopathic inflammatory myopathies characterized by symmetric proximal limb weakness and chronic skeletal muscle inflammation. We herein report the first case of bilateral leg pain and unilateral calf atrophy caused by polymyositis accompanying lumbar spinal stenosis and disc herniation. A 52-year-old man presented with intermittent claudication and calf pain that had become gradually aggravated during the last 3 months. Magnetic resonance imaging showed spinal stenosis at the L3/4 and L4/5 levels and lumbar disc herniation at the L4/5 level. Preoperative laboratory investigations revealed elevated muscle enzyme concentrations. Magnetic resonance imaging also showed atrophy, fatty degeneration, and edema in both calf muscles. Histological examination showed inflammatory myositis and fibrosis in the perifascicular connective tissues. The patient was diagnosed with polymyositis. We performed decompressive laminectomy at the L3/4 and L4/5 levels and discectomy at the L4/5 level. After administration of prednisolone for 6 months and methotrexate for 3 months, the patient’s bilateral calf pain and abnormal laboratory findings improved. The combination of surgical decompression and adequate medical treatment resulted in a successful recovery. Polymyositis should be suspected in patients with lumbar spinal stenosis or lumbar disc herniation who exhibit increased muscle enzyme concentrations or lower extremity muscle atrophy.

scholarly journals Inter- and Intraobserver Agreement of Morphological Grading for Central Lumbar Spinal Stenosis on Magnetic Resonance Imaging

2015 ◽  
Vol 5 (5) ◽  
pp. 406-410 ◽  
Author(s):  
Clemens Weber ◽  
Vidar Rao ◽  
Sasha Gulati ◽  
Kjell A. Kvistad ◽  
Øystein P. Nygaard ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Intraobserver Agreement ◽  
Resonance Imaging ◽  
Lumbar Spinal
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