Pathogenesis of the Degenerative Lumbar Canal Stenosis

We determine the size of the dural sac of the lumbar spine by measuring the sectional area. The area of lumbar canal stenosis is below 90mm2. According to this indicator, eighteen cases of lumbar canal stenosis (LCS) and eleven cases of spondylosis (OAS) are investigated. The average ages are sixty-one in LCS and seventy-four in OAS. Other morphological investigations by CT revealed no difference between LCS and OAS.We conclude that the symptoms of LCS mainly depends on the dynamic factors and spinal instability.