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Updated: Jun 24, 2026

The Third Channel-Assisted Unilateral Biportal Endoscopic Technique for Lumbar Spinal Stenosis Combined with Contralateral Disc Herniation
Published on: November 17, 2023
[Pathomechanisms of spinal canal stenosis - upright MRI image gallery]
P Niggemann1, D Grosskurth, H-K Beyer
1Radiologie, Privatpraxis für Upright MRT, Köln. p.niggemann@mrt-koeln.de
Aim:
Lumbar spinal canal stenosis is a common disease of the elderly patient, with a high prevalence and clinical importance. MRI is the established method of choice for the imaging of spinal canal stenosis. However, there is often a discrepancy between the clinical symptoms and the spinal canal stenosis as shown using MRI in a supine position. In such cases preoperative functional imaging is often warranted.
Methods:
In an image gallery three cases of a functional spinal canal stenosis of the lumbar spine are shown. In all three patients a dynamic, positional MRI (upright MRI) was performed.
Results:
The pathomechanisms of the spinal canal stenosis could be shown in all three cases.
Conclusion:
Using upright MRI a functional spinal canal stenosis can be shown. The pathomechanisms of the spinal canal stenosis are discussed. The possibilities and limitations of this new imaging modality are presented and analysed.
Insights
Upright MRI can reveal functional lumbar spinal canal stenosis, addressing discrepancies between supine imaging and patient symptoms. This dynamic imaging technique visualizes the underlying pathomechanisms effectively.
Area of Science:
- Radiology
- Orthopedics
- Neurosurgery
Background:
- Lumbar spinal canal stenosis is a prevalent condition in elderly patients, often presenting with symptoms disproportionate to supine MRI findings.
- Standard MRI in a supine position may not fully capture the dynamic nature of spinal canal stenosis.
- Preoperative functional imaging is crucial when supine MRI results do not correlate with clinical presentation.
Observation:
- This study showcases three cases of functional lumbar spinal canal stenosis.
- Dynamic, positional MRI (upright MRI) was utilized in all three patients.
- The pathomechanisms contributing to spinal canal stenosis were successfully visualized.
Findings:
- Upright MRI effectively demonstrates functional spinal canal stenosis.
- The study highlights the ability of dynamic imaging to reveal stenosis mechanisms.
- Pathomechanisms of lumbar spinal canal stenosis were elucidated in all presented cases.
Implications:
- Upright MRI offers a valuable tool for diagnosing functional spinal canal stenosis.
- Understanding the pathomechanisms through functional imaging can guide treatment strategies.
- This modality provides insights into the possibilities and limitations of dynamic spinal imaging.
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