Lumbar spinal stenosis (LSS) functionally limits individuals by causing pain in both the waist and the legs during activity and walking. Pain is, therefore, an important problem for patients. Pain lasts for years in LSS and thus becomes chronically persistent. As a result, persistent pain can cause sensitization due to a decrease in the pain threshold. This condition affects patients not only biomedically but also biopsychosocially. For this reason, various sleep disorders and mood disorders can develop in patients. Therefore, this study aimed to examine the relationship between central sensitization and pain, disability, sleep and depression in patients with LSS.