Spinal stenosis is a back condition that can cause pain, numbness, or tingling in the back or down the legs. It is a narrowing of the spinal canal or of the spaces between the vertebrae where spinal nerves pass through. This narrowing is usually caused by arthritis or injury, and can for different reasons.
- The vertebrae can form “bone spurs.” These are bony growths that pinch the spinal cord or the nerves branching from the spinal cord.
- The discs can shrink and make the space between the vertebrae smaller. This can cause the vertebrae to pinch the nerves that pass through them.