<unk>  is the fundamental clinical feature of , which may be congenital or acquired. As a result of , the spinal canal in the lumbar spine narrows, causing damage and arthritic changes in the spine. These changes, such as bulging disks, thickening of ligaments and overgrowth of bone spurs, lead to pressure and potentially damage to the spinal nerve roots. The compression of the spinal nerve roots that control movements and sensations in the lower body subsequently causes the symptoms of . The causes of are most commonly acquired and include degenerative changes such as degenerative disc disease and spinal osteoarthritis. may also be acquired from changes due to spinal surgery such as excess scar tissue or bone formation. Other secondary causes include space-occupying lesions, ankylosing spondylitis, rheumatoid arthritis, and Paget's disease. Less commonly, the cause of spinal stenosis may be present at birth as seen in achondroplasia, spina bifida, and certain mucopolysaccharidoses. In addition to spinal stenosis, other lower back conditions such as spondylosis, tumors, infections and herniated or ruptured discs can cause . These conditions contribute to the potential narrowing of the spinal cord, increasing pressure and inducing damage on the spinal nerve roots, thus, causing paing, tingling or weakness in the lower body. Risk factors for include: * Age * Degenerative changes of the spine * Obesity * Family history of spinal stenosis * Tobacco use * Occupation involving repetitive mechanical stress on the spine *Past deformities or injuries to the spine
Neurogenic claudication
Intermittent claudication
Popliteal artery entrapment syndrome
Raynaud syndrome
Popliteal artery aneurysm
Jaw claudication
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Chronic venous insufficiency