Background: The objective of the study was to assess the effectiveness of a 2-week therapeutic programme consisting of combination therapy and postisometric relaxation and its effect on the mobility of joints and the level of perception of pain in patients with osteoarthritis of hip joints. Material/Methods:The research was carried out on subjects clinically and radiologically diagnosed as patients with osteoarthritis of hip joints. 30 subjects, including 7 men and 23 women (average age of 67.8 yrs), underwent the examinations. The therapy lasted 2 weeks and consisted of 10 treatment sessions. The medical program included a combination therapy and individual exercises, i.e. postisometric relaxation of the hip joint. In the combination therapy conventional TENS and ultrasounds were applied. Moreover, tailored exercises were performed systematically every day at home. Results: The study proved that an individually prepared therapeutic program including postisometric relaxation and combination therapy improves ROM in all planes of hip joins in osteoarthritis. It was also stated that after 2 pain assessment tests (the VAS and Laitinen scales) the therapy was confirmed to be a successful method in pain relief. The researchers also noticed that systematically conducted therapy led to reducing the incidence of pain which is manifested by limitation of pharmacotherapy. Conclusions: The research shows that combination therapy together with postisometric relaxation is an effective form of conservative treatment for degenerative changes in the hip joint.