This chapter provides detail description of Lumbar canal stenosis. Chapter has 5 well illustrated diagrams and pictures. Lumbar canal stenosis, normal anatomy of lumbar vertebral canal, pathophysiology of spinal stenosis, spinal claudication syndrome, neurogenic compression theory, vascular compression theory, clinical presentation of lumbar stenosis, imaging studies of spinal stenosis, management of lumbar stenosis, laminotomy or laminectomy, decompression and spinal fusion are described in detail. 32 references are included at the end of the chapter to facilitate further reading