Total knee arthroplasty (TKA) is applied in end-stage osteoarthritis to reduce pain, improve functional ability, and provide greater health related quality of life. However, evidence showed that presence of severe pain, impaired functional outcomes and reduced muscle strength continue up to 6 to 12 month after surgery. Relaxation techniques such as progressive muscle relaxation exercise and rhythmic breathing have long been used in treating postoperative pain and for various health-related purposes. Although the number of studies that include relaxation techniques in treating postoperative pain is increasing, there isn't any study that investigate the effectiveness of progressive muscle relaxation exercise on pain, functional outcomes and muscle strength in patients with TKA.~The aim is to investigate the effectiveness of progressive muscle relaxation (PMR) exercise on pain, functional outcomes and muscle strength in patients with TKA.
The purpose of this study is to investigate the effectiveness of progressive muscle relaxation (PMR) exercise on pain, functional outcomes and muscle strength in patients with TKA. Seventy patients with TKA are going to randomly assigned to intervention group and control group.