Understanding Lumbar Spinal Stenosis
Where Stenosis Occurs Most Often
Stenosis can happen at any level of the lumbar spine, but certain levels are more commonly affected:
| Level | Location | How common |
|---|---|---|
| L4/5 | Between the 4th and 5th lumbar vertebrae | Most common |
| L3/4 | Between the 3rd and 4th lumbar vertebrae | Common |
| L5/S1 | Between the 5th lumbar vertebra and the sacrum | Less common |
It's not unusual for stenosis to occur at more than one level (multi-level stenosis).