Our video walk-through can help you visualize how lumbar spinal stenosis affects your nerves:
Each one of the vertebrae in your lumbar spine has a space in the middle (part of your spinal canal) through which your nerve bundles travel.
Nerve roots extend off your spinal canal on either side through a space at the back of your vertebrae known as the foramen.
How lumbar spinal stenosis affects your lumbar nerves
If your spine is healthy, both your nerve bundle and nerve roots have ample room within your spinal canal and foramen.
But if you have lumbar spinal stenosis, degenerative changes (such as bone spurs) can restrict the space that your nerves have within your spinal canal. In turn, this may place pressure on your nerves.
See Bone Spur Causes
Bone spurs can also affect the foramen, narrowing the space for one or more of your nerve roots as they exit your spine.
Common symptoms of lumbar spinal stenosis include:
- Leg pain
- Heightened leg pain while walking
- Tingling, weakness or numbness that radiates from your lower back into your buttocks and legs
There are numerous non-surgical treatment options for lumbar spinal stenosis, including the following: