Immediate Effects of High-intensity Laser Therapy on Knee Joint Position Sense and Knee Muscle Strength in Patients with Knee Osteoarthritis

Inclusion Criteria: * knee pain greater than 3 on the Visual Analog Scale (VAS) for more than 3 months * diagnosed with unilateral knee osteoarthritis by a physician or meeting the American College of Rheumatology Classification Criteria for clinical knee osteoarthritis * the severity of knee osteoarthritis is classified as grades 0-3 according to the Kellgren-Lawrence (KL) classification * should not have undergone any specific treatments in the 3 months preceding the recruitment for the study, such as steroid injections. Exclusion Criteria: * any other musculoskeletal problems associated with knee pain * musculoskeletal problems associated with the hip and ankle joints * a history of lower limb fracture * neurological conditions * contraindications for laser therapy