Osteoarthritis is a disease manifested by degenerative changes in joint cartilage. The main symptom of hip arthrosis is pain, which increases during joint activity and decreases during rest. There are standardized criteria used to diagnose osteoarthritis, the most widely used being that of the American College of Rheumatology. Through observation, we obtain data on the patient's range of motion and muscle activity and strength. By visual examination, we can see several key factors such as the patient's, functional and anatomical length of the leg. In most cases, the diagnosis is made by comparing and combining information obtained from the anamnesis, physical examination and the results of various findings. . The knee and hip joints are the two most commonly affected joints. Preoperative rehabilitation before surgery lasts approximately 2 weeks and is usually carried out by strengthening all muscles, cardio training, physical therapy and learning to walk with crutches. It is important to educate individuals and their families about muscle strengthening exercises, fall prevention, and proper use of postoperative aids. Exercise and functional training should be started immediately after surgery or the day after surgery. In the treatment of osteoarthritis, there are two forms of therapy, namely drug therapy or therapy without drugs and surgical treatment. Non-pharmacological approaches are based on patient education, weight reduction (it depends on each patient individually) and exercise. A combination of proper nutrition, aerobic training and exercise can be more effective in reducing pain and improving function of the same exercise. The goals of the therapy are set according to the patient's priorities and capabilities. Total hip arthroplasty should be the last solution for the patient, i.e. after the possible failure of all other forms of therapy. The most important determinants of non-pharmacological treatment are that the patient is at the center of the treatment and that the approach is individualized.