<prompt> Lumbar canal stenosis presents as ?ClaudicationScoliotic deformityKyphotic deformityRadiculopathy  <response>: Ans. is a i.e., Claudication The patient of lumbar canal stenosis is usually a man aged over 50, complains of aching, heaviness, numbness and paraesthesia in the thighs and legs; it comes on after standing upright or walking for 5-10 minutes, and is consistently relieved by sitting, squatting or leaning against a wall to flex the spine hence the term spinal claudication. 