Knee osteoarthritis (KOA), is a chronic degenerative joint pathology with a global prevalence of 22.9% in individuals aged 40 and over. It is a leading cause of disability and poor quality of life worldwide due to musculoskeletal pain and functional limitations. Musculoskeletal pain is the primary patient-reported outcome in patients with osteoarthritis (OA) and a major cause of disability and functional limitations this study was carried to investigate the correlation between knee pain and lumbar proprioception