6 doctors weighed in:

What does grade 1 spondylolisthesis at the l4-5 level mean?

6 doctors weighed in
Dr. Michael Bolesta
Orthopedic Surgery
4 doctors agree

In brief: Up to 25%

Grade 1 means that the forward slippage of L4 is up to one quarter (25%) of the top of the L5 vertebra.
So if the top of L5 front to back is 50 mm, the forward slip of L4 is more than zero and less than 12.5 mm.

In brief: Up to 25%

Grade 1 means that the forward slippage of L4 is up to one quarter (25%) of the top of the L5 vertebra.
So if the top of L5 front to back is 50 mm, the forward slip of L4 is more than zero and less than 12.5 mm.
Dr. Michael Bolesta
Dr. Michael Bolesta
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Dr. William Goldie
Pediatrics - Neurology

In brief: Slip of the spine

The lumbar region of the lower back has five vertebra: L1 -l5.
The lowest portion is at the very bottom of your spine where it connects to the pelvis. This is a common area for slippage. Poor posture, weak stomach muscle, heavy lifting, too much sitting all lead to this slippage. X-rays and mris may show this change, and you may have lots of low back pain. The spinal cord is not affected.

In brief: Slip of the spine

The lumbar region of the lower back has five vertebra: L1 -l5.
The lowest portion is at the very bottom of your spine where it connects to the pelvis. This is a common area for slippage. Poor posture, weak stomach muscle, heavy lifting, too much sitting all lead to this slippage. X-rays and mris may show this change, and you may have lots of low back pain. The spinal cord is not affected.
Dr. William Goldie
Dr. William Goldie
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