The possible causes of joint pain in the right leg include soft tissue injury of the knee joint, meniscus injury, osteophytes and so on. 1. Knee soft tissue injury: Knee soft tissue injury may be caused by straining from strenuous exercise or being hit by the outside world. If the right knee joint soft tissue injury, the patient will have the symptoms of right leg joint pain and activity limitation. 2. Meniscus injury: meniscus injury may be caused by indirect violent trauma such as knee twisting, or it may be the result of long-term weight-bearing cumulative injury. If the meniscus of the right leg joint is damaged, the symptoms will also appear. 3. Osteomalacia: If the patient’s right leg has osteomalacia, it may also lead to obvious pain in the right leg joint, especially when the pain is more obvious during weight-bearing activities. Right leg joint pain may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.