Inclusion Criteria:  Patients between the ages of 50-70  Patients who have been followed up with the diagnosis of knee ostheoarthritis Patients who have been followed up with the diagnosis of knee ostheoarthritis and sarcopenia  Exclusion Criteria:  Previous history of any trauma/surgical history of the lower extremities (other than amputation) Rheumatic diseases Contracture of the knee and the ankle of the intact limb malignant disease hyperthyroidism/ hypothyroidism chronic inflammatory disease diabetes mellitus, and uncontrollable heart and kidney diseases pregnant women