Study aim: 1- Comparison of pain before and after intervention in two groups of intervention and control. 2- Comparison of pain intensity before and after intervention in two groups of intervention and control. 3- Comparison of dry joints before and after intervention in intervention and control groups. 4. Comparison of physical function before and after intervention in two groups of intervention and control. 5- Comparison of pre-and post-intervention drug use in both intervention and control groups. Design: The sample size is based on Table B.12 1 for the comparison of the mean of the three independent groups (control, conventional treatment, acupressure). Settings and conduct: Samples were collected from patients referring to the Imam Khomeini Hospital clinic as well as orthopedic clinics. Following the training, weekly follow up is done on the intervention and the results. Participants/Inclusion and exclusion criteria: 1- The severity of the pain in the knee is based on a scale of over 3. 2. Not using other complementary therapies or relaxation techniques such as yoga and relaxation and ... 3. No knee injury that prevents acupressure in that area 4. Failure to develop a disease of rheumatoid arthritis or lupus that may cause symptoms such as osteoarthritis. Intervention groups: Patients are randomly assigned into three independent groups (control and conventional therapy and acupressure). The training is given to the intervention group during the same session in person. The acupressure training is also given to the control group, with the difference that we introduce the pressure points at a distance of 1 cm from the main points. At the end of the study, acupressure training will be given to the control group.. Main outcome variables: Acupressure; pain; pain intensity; physical function