Stenosis is the abnormal narrowing of the spinal canal or the opening between vertebrae through which nerve roots exit (the
intervertebral foramen).

The narrowing in spinal stenosis may be the result of aging, degenerative disc disease, disc herniation, scar formation, or a tumor. Stenosis may also result from disc collapse, new bone growth,
or spondylolisthesis.


• Decreased endurance during physical exercise and activities
• Weakness and/or loss of balance
• Numbness and a “prickly” feeling in your legs, calves, or buttocks
• Aching, dull back pain spreading to your legs
• Symptoms improve when you sit, lean forward, lie on your back, or      sit with your feet  raised
• Neurogenic claudication

>> Learn more from the National Institute of Arthritis and Musculoskeletal and Skin Diseases.