Axial Loading During Magnetic Resonance Imaging in Patients With Lumbar Spinal Canal Stenosis

<sec><title>Study Design</title>Cross-sectional retrospective study designed to assess interobserver agreement.</sec><sec><title>Purpose</title>To investigate if interobserver agreement using magnetic resonance imaging (MRI) in the evaluation of lumbar spinal canal stenosis and root compression can be improved upon combination with magnetic resonance myelography (MRM).</sec><sec><title>Overview of Literature</title>The interpretation of lumbar spinal MRI, which is the imaging modality of choice, often has a significant influence on the diagnosis and treatment of low back pain. However, using MRI alone, substantial interobserver variability has been reported in the evaluation of lumbar spinal canal stenosis and nerve root compression.</sec><sec><title>Methods</title>Hardcopies of 30 lumbar spinal MRI (containing a total of 150 disk levels) as well as MRM films were separately reviewed by two radiologists and a neurosurgeon. At each intervertebral disk, the observers were asked to evaluate the thecal sac for the presence and degree of spinal stenoses (mild, moderate, or severe) and presence of root canal compression. Interobserver agreement was measured using weighted kappa statistics.</sec><sec><title>Results</title>Regarding lumbar spinal canal stenosis, interobserver agreement between the two radiologists was moderate (kappa, 0.4) for MRI and good (kappa, 0.6) for combination with MRM. However, the agreement between the radiologist and neurosurgeon remained fair for MRI alone or in combination with MRM (kappa, 0.38 and 033, respectively). In the evaluation of nerve root compression, interobserver agreement between the radiologists improved from moderate (kappa, 0.57) for MRI to good (kappa, 0.73) after combination with MRM; moderate agreement between the radiologist and neurosurgeon was noted for both MRI alone and after combination with MRM (kappa, 0.58 and 0.56, respectively).</sec><sec><title>Conclusions</title>Interobserver agreement in the evaluation of lumbar spinal canal stenosis and root compression between the radiologists improved when MRM was combined with MRI, relative to MRI alone.</sec>

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

Journal of Medicine and Pharmacy ◽

10.34071/jmp.2018.6.20 ◽

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

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Compression patterns of nerve root on magnetic resonance myelogram in patients with lumbar spinal canal stenosis

The Journal of Japanese Society of Lumbar Spine Disorders ◽

10.3753/yotsu.15.117 ◽

2009 ◽

Vol 15 (1) ◽

pp. 117-121

Author(s):

Shinya KATO

Keyword(s):

Magnetic Resonance ◽

Nerve Root ◽

Spinal Canal ◽

Spinal Canal Stenosis ◽

Lumbar Spinal Canal Stenosis ◽

Canal Stenosis ◽

Lumbar Spinal Canal ◽

Lumbar Spinal

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Assessment of lumbar spinal canal stenosis by magnetic resonance phlebography

Journal of Orthopaedic Science ◽

10.1007/s007760300000 ◽

2003 ◽

Vol 8 (1) ◽

pp. 1-7 ◽

Cited By ~ 7

Author(s):

Masakazu Manaka ◽

Masashi Komagata ◽

Kenji Endo ◽

Atsuhiro Imakiire

Keyword(s):

Magnetic Resonance ◽

Spinal Canal ◽

Spinal Canal Stenosis ◽

Lumbar Spinal Canal Stenosis ◽

Canal Stenosis ◽

Lumbar Spinal Canal ◽

Lumbar Spinal

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Wild-type transthyretin amyloid cardiomyopathy complicated by spinal canal stenosis, carpal tunnel syndrome, and rotator cuff tears: a case report

European Heart Journal - Case Reports ◽

10.1093/ehjcr/ytaa329 ◽

2020 ◽

Author(s):

Seiji Takashio ◽

Masato Nishi ◽

Yuichiro Tsuruta ◽

Kenichi Tsujita

Keyword(s):

Rotator Cuff ◽

Spinal Canal ◽

Spinal Canal Stenosis ◽

Rotator Cuff Tears ◽

Lumbar Spinal Canal Stenosis ◽

Canal Stenosis ◽

Tunnel Syndrome ◽

Amyloid Cardiomyopathy ◽

Lumbar Spinal Canal ◽

Lumbar Spinal

Abstract Background Wild-type transthyretin amyloid cardiomyopathy (ATTRwt-CM) is receiving increasing attention due to the availability of novel treatment options. Carpal tunnel syndrome (CTS) and lumbar spinal canal stenosis are known early symptoms of transthyretin (TTR) amyloidosis preceding the cardiac involvement and are considered as ‘Red Flags’ for transthyretin amyloid cardiomyopathy (ATTR-CM). Case summary A 67-year-old man with a history of lumbar spinal canal stenosis for the last 10 years, right rotator cuff tears for the last 4 years, and bilateral CTS for the last 1 year was scheduled for orthopaedic surgery for lumbar spinal canal stenosis. Investigations revealed severe left ventricular hypertrophy and hypertroponinaemia, which were suggestive of cardiac amyloidosis. Cardiac magnetic resonance imaging and 99mTc-labelled pyrophosphate scintigraphy demonstrated positive findings for ATTR-CM. Transthyretin deposition was found in both the myocardium and the yellow ligamentum excised during surgery. There was no transthyretin mutation on genetic testing. The final diagnosis was ATTRwt-CM. Discussion Transthyretin deposition in the ligaments or tendons has been observed in a number of patients with CTS, spinal canal stenosis, and rotator cuff tears. These orthopaedic diseases are predictive for the future occurrence of ATTR-CM. In addition, the coexistence of these multiple diseases might strongly predict ATTR-CM. This knowledge needs to be shared with orthopaedicians and cardiologists for the early diagnosis of ATTR-CM.

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