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Back Problems Message Board

Back Problems Board Index

Conus terminates at L1, Marrow cavity is homogeneous. There is minimal grade 1 anterolistheses of L5 on S1 due to bilateral L5 pars defects. Paraspinal soft tissues are unremakable. There is mild SI joint degenerative change bilaterally.

L3-4: Moderate bilateral facet degenerative change and a mild diffuse disc osteophyte extends both neural foramina resulting in moderate bilateral foraminal stenosis. Central canal is intact.

L4-5: There is moderate left-sided greater than right lateral disc bulging resulting in moderate left and mild right-sided neural foraminal stenosis.

L5-S1: There is a grade 1 anterolisthesis due to the pars defects resulting in pseudodisc bulging which causes moderate right greater than left neural foraminal stenosis. Central Canal is intact.


Pars defects L5 with grade 1 anterolisthesis resulting in moderate bilateral foraminal stenosis.

Lateral disc bulding L4-5 results in moderate left and mild right foraminal stenosis.

Moderate bilateral foraminal stenosis L3-4 due to lateal disc bulging.
Welcome to the board. Very simply put, there are some degenerative changes in the lower three segments of the lumbar spine that are causing some compression of the spinal nerves in the foramina at these levels. The foramen is an opening located at each segment, on each side, that the spinal nerves goes through as it exits the spine and goes out to the area of the body it innervates. When "something" blocks the opening or causes its diameter to narrow, the nerve becomes compressed (pinched/squished). This can result in pain/tingling/numbness that can be felt at the point of compression, or anywhere along the path of the nerve. Each nerve innervates a specific part of the body...if curious, look up a " dermatome map" online to see what L3, L4, L5 and S1 innervate.

In addition at L5-S1 there is a spondylolisthesis. This is when one vertebra slips over the top of the adjacent vertebra. It can (but doesn't always) cause some instability. This is best seen with a flexion/extension X-ray. It is referred to in the report as Grade 1 anterolisthesis which means a small amount of slippage toward the front side of body.

One thing I found helpful to know is that there are standard words used to describe "how bad" or "how much" a finding is. They are minimal, mild, moderate and severe.

What symptoms are you experiencing?

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