Thoracic spinal stenosis, at the level of the mid-back, is much less common.In lumbar stenosis, the spinal nerve roots in the lower back are compressed which can lead to symptoms of sciatica (tingling, weakness, or numbness that radiates from the low back and into the buttocks and legs).Cervical spinal stenosis can be far more dangerous by compressing the spinal cord. Cervical canal stenosis may lead to myelopathy, a serious condition causing symptoms including major body weakness and paralysis. Such severe spinal stenosis symptoms are virtually absent in  lumbar stenosis, however, as the spinal cord terminates at the top end of the adult lumbar spine, with only nerve roots (cauda equina) continuing further down. Cervical spinal stenosis is a condition involving narrowing of the spinal canal at the level of the neck. It is frequently due to chronic degeneration, but may also be congenital or traumatic. Treatment frequently is surgical. Signs and symptoms
Common
Standing discomfort (94%)
Discomfort/pain, in shoulder, arm, hand (78%)
Bilateral symptoms (68%)
Numbness at or below the level of involvement  (63%)
Weakness at or below the level of involvement  (43%)
Pain or weakness in buttock / thigh only (8%)
Pain or weakness below the knee (3%)

Neurological disorders
Cervical (spondylotic) myelopathy, a syndrome caused by compression of the cervical spinal cord which is associated with "numb and clumsy hands", imbalance,   loss of bladder and bowel control, and weakness that can progress to paralysis. Pinched nerve, causing numbness.
Cardiac failure may occur in two forms: sudden heart failure or gradual cardiac failure characterized by lung anemia that causes death due to suffocation.Ewes may be given an injection of vitamin E/selenium prior to lambing to prevent deficiencies in lambs. In areas, such as Ontario, where lambs are highly susceptible to the condition, management practices should include vitamin E/selenium injections. Cattle
In dairy breeds, the disease may occur in calves between birth and 4 months of age. In rustic breeds or beef cattle, heifers and young steers up to 12 months of age can be affected. In calves, muscles in upper portion of the front legs and the hind legs are degraded, causing the animal to have a stiff gait and it may have difficulty standing. The disease may also present in the form of respiratory distress. Gallery
External links

Description of the disease in Merck Veterinary Manual


== References ==