The most common causes of pain in the joints of the right leg are trauma, rheumatoid arthritis, osteoarthritis and so on. 1. Trauma: If the joints of the right leg of the patient have been traumatized, it is easy to cause local muscle and ligament damage, local inflammatory reaction, which in turn causes pain. 2. Rheumatoid arthritis: If the patient’s rheumatoid arthritis has an acute attack, it is easy to cause redness, swelling and pain in the joints of the right leg, as well as limitation of movement. 3. Osteoarthritis: If the joints of the right leg of the patient suffer from trauma or other reasons, causing degenerative changes of the bones, it is easy to have pain in the joints, and the severe symptoms may also cause deformity of the joints. The causes of pain in the joints of the right leg are many, and may be related to gout, osteophytes, local infections and synovitis, etc. If the symptoms continue to be unrelieved, it is recommended to go to the hospital in time to find out the cause of the disease, and be treated by the doctor.