Stenosis in the lumbar spine may be diagnosed if degenerative changes have narrowed the bony openings of the spine and affected the nervous tissues, such as the spinal nerves, spinal cord, and/or the cauda equina. This is a medical condition which usually occurs due to age-related changes and this may decrease the size of the canal. The narrowing may not cause any symptoms. This disorder usually involves the narrowing of one or two areas of the spine: 1. The reduction in canal size may cause local neural compression and/or compromise of the blood supply to the cauda equina ... Microsoft PowerPoint - Spinal Stenosis.ppt Author: fuer03 Stenosis of the central portion is almost always associated with stenosis of the lateral corners of the spinal canal reverse may not be true. SPINAL ( CANAL ) STENOSIS Overview of Spinal Stenosis Spinal stenosis is a narrowing of spaces in the spine that results in pressure on the spinal cord and/ or nerve roots. The intervertebral foramen (lateral stenosis) Spinal stenosis is a term used to describe a narrowing of the spinal canal. The prevalence of LSS is estimated to be 9% in the general population and up to 47% in people older than 60 years [1]. Lumbar spinal stenosis (LSS) is a medical condition in which the spinal canal narrows and compresses the nerves and blood vessels at the level of the lumbar vertebrae.Spinal stenosis may also affect the cervical or thoracic region, in which case it is known as cervical spinal stenosis or thoracic spinal stenosis. Most often it occurs when you walk. However, the narrowing may progress to cause squeezing (compression) of the spinal nerves or compression of the spine. The lumbar canal stenosis is a condition which indicates the narrowing of your spinal canal or the tunnels through which your nerves and other body parts communicate with the canal. Lumbar canal stenosis, the most common form of spinal stenosis, causes neurogenic intermittent claudication and radiculopathy, and these symptoms dominate the clinical presentation. The lumbar spinal canal consists of a central part, two lateral parts and a posterior part corresponding to the interlaminar angle. This may put pressure on the nerves and can cause pain, numbness, or weakness in your buttocks, legs, or feet. Thickening of the spinal ligaments inside the vertebral canal, leading to compressive forces on the spinal cord and spinal nerves. 1 The central spinal canal is rounded and occupied by the thecal sac. Stenosis in the spine is the narrow-ing of the bony canal that surrounds the nerves. Lateral lumbar spinal canal stenosis:classification, pathologic anatomy and surgical decompression. The spinal canal (central stenosis) 2. Lumbar Stenosis • Central canal stenosis: 9Narrowing of the AP dimension of the spinal canal. LSS may occur on a congenital narrow lumbar canal or may result from degenerative processes. 1997 Volvo Award winner in clinical studies. Spinal stenosis causes back pain and leg pain. It may result from trauma or as a normal part of aging. Central stenosis involves narrowing of the spinal canal around the thecal sac containing the cauda equina, and occurs as a result of the facet joint arthrosis and hypertrophy, thickening and bulging of the ligamentum flavum, bulging of the intervertebral disc, or spondylolisthesis. Rationale for spinal fusion in lumbar spinal stenosis . When the narrowing happens in the lower part of your back, it is called lumbar stenosis. Lumbar spinal stenosis (LSS) is a common spinal condi-tion and the most frequent indication for spinal surgery in elderly people. Degenerative processes or two areas of the canal a common spinal condi-tion and the most frequent indication for spinal in... 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