Inclusion Criteria:  Being diagnosed as knee osteoarthritis Being between the ages 45-74 Being at stage 2-3 according to Kellegren Lawrence Classification Having body mass index lower than 30 Being volunteer for participation to this study  Exclusion Criteria:  Refusing to participation to study Having another orthopeadic problem ralated to lower extremity Having uncontrollable hypertension Having arterial and venous disease Having neurological disease Having perceptual problem Having cardiac pacemaker Participation to physiotherapy program in the last 6 months for the same extremity Taking injection from the same extremity in the last 6 months