Lumbar Spinal Stenosis
Understanding Lumbar Spinal Stenosis found on Lumbar Spine Magnetic Resonance Imaging imaging. Learn what this finding means and what steps to take next.
Radiographic Appearance
Magnetic Resonance Imaging FindingNarrowed central canal with crowding of cauda equina; hypertrophic ligamentum flavum and facet arthropathy common.
Clinical Significance
Causes neurogenic claudication; imaging guides surgical decompression planning.
What is Lumbar Stenosis?
Canal narrowing compressing nerve roots, usually degenerative. MRI shows the level and cause of compression.
Imaging Appearance
- Reduced AP canal diameter
- Facet overgrowth, ligamentum flavum thickening
- Disc bulge or herniation contributing
- CSF effacement with nerve root crowding
Clinical Significance
- Correlates with neurogenic claudication and radicular pain
- Guides level(s) for decompression
Symptoms
- Leg pain/weakness worsened by walking, relieved by sitting/flexion
Diagnosis
- MRI lumbar spine
- Physical exam: shopping-cart sign
Treatment
- Physical therapy, NSAIDs, epidural steroids
- Surgical decompression ± fusion for refractory cases
Prognosis
- Many improve after decompression; PT can help mild cases
What Should You Do?
- Trial flexion-based PT and posture modifications.
- Discuss surgery if walking limited despite therapy.
- Monitor new weakness or bladder changes urgently.
Medical Disclaimer: Educational only; follow spine specialist advice.
Correlate with Lab Results
Doctors often check these blood tests when Lumbar Spinal Stenosis is found on imaging:
Related Imaging Terms
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