Spinal stenosis is an abnormal narrowing of the spinal canal. The spinal canal is the passageway where the spinal cord and nerve roots are encased. This narrowing can happen at any area in the spine.
There are three major types of spinal stenosis, and identifying each will help with the treatment.
Lateral stenosis: This is the most common type and occurs when a nerve root that leaves the spinal canal is compressed by either a bulging or herniated disc. This compression can result in sciatica or lumbar/ cervical radiculopathy; depending on where the compression is.
Central stenosis: This occurs when the central canal of the spinal cord is being choked. This can lead to compression of the spinal cord and the nerve roots.
Foraminal stenosis: This area is where the nerve root leaves the spinal canal, when this is compressed it can cause radiculopathy.