Lumbar spinal stenosis (LSS) is a common and often disabling, well-recognized spinal disorder that generally occurs in old age, although it can uncommonly occur in younger individuals. Degenerative LSS including intervertebral disc bulge, ligamentum flavum hypertrophy/calcification, facet joint hypertrophy, cause neural compression in the vertebral canal, lateral recess, or intervertebral foramen, resulting in pain, impaired function, and decreased quality of life.This work aims to assess the results of surgical treatment of lumbar spinal canal stenosis by laminectomy and posterolateral fusion.