L5-S1 please help understand results.


Q: What does this mean from recent MRI

History of L5-S1 laminectomy with left-sided weakness, now
presents with one month of radicular pain

Technique: Standard MRI lumbar spine protocol.

The conus medullaris appears normal the L1-L2 level

Normal lumbar lordosis is present.

No significant marrow signal abnormality otherwise.

L1-2: Normal

L2-L3: Normal

L3-4: The intervertebral disc is normal in contour. There is mild
ligamentum flavum hypertrophy and facet arthropathy. The spinal
canal and neural foramina are patent.

L4-5: Intervertebral disc is normal in contour. There is mild
posterior ligamentum flavum hypertrophy and facet arthropathy. The
spinal canal and neural foramina are patent.

L5-S1: There is decreased signal and height in the intervertebral
disc. There is also a left posterior paracentral and lateral disc
protrusion scar tissue measuring 5 mm in AP diameter and 16 mm in
transverse diameter. This protrusion extends into the left lateral
recess and may impinge the transiting left S1 nerve root. This
protrusion extends into the inferior aspect of the left neural
foramen, contributing to mild narrowing. The right neural foramen
and spinal canal are patent. There are postsurgical changes of a
laminectomy at the L5-S1 articulation.

Minimal lumbar spondylosis as described above. The most severe
changes are identified at the L5-S1 articulation. Specifically
there is intermediate signal within the left lateral recess, which
may be secondary to extruded disc material/scar tissue. These
findings may impinge the transiting left S1 nerve root.
Correlation with the patient's physical exam and clinical history
is recommended to determine the significance of these findings

Symptoms:  Want to know how serious this is. I already have numbness since 1st back surgery in 2006 and now I am getting numbness on right side

A:   Hi,
Thank you for posting your query on ATD.
I have gone through your query and understand your concern. There is disc protruding at L5S1 level causing pressure changes mainly left side. Right side is relatively unaffected. Other levels are normal. At present treatment of it is rest in lateral position with both hips and knees flexed,analgesic such as ibuprofen are given for pain relief. Mecobalamine reduces numbness.
Hope your query get answered.
Wishing you a good health.
Take care.

Related Q&A

Q: 23 y.o. female had lower right back pain for about 1 year following a burning pain from bending over (I thought it wa...

Q: Hello, I'm Adriana, I just received MRI results of my brain, I'm 40 yrs old, suffer from migraines, tension headaches...

Q: Hello I got liked in the chest 4days ago ( accident ) in the middle of the chest next to my left breast actually Righ...

Q: Hello, I had thoracic back pain (dully/achey) on my right side. This past Feb that lasted through May along with som...

Q: It began about three months ago. I would have lower back pain for a day and it would go away. Then it would happen a...


Dr. James Obaji M.D.

  • 247 Reviews
  • Family Physician

Dr. Suneel Sharman M.D.

  • 190 Reviews
  • Family Physician

Dr. Pat Golden M.D.

  • 169 Reviews
  • Cardiologist

Dr. Kunaal Jindal M.D.

  • 112 Reviews
  • Plastic Surgeon