### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I have known OA, have had meniscuses surgery bilaterally over the last 3 years. Moderate OA in this knee. Age 57. Having pain behind knee more toward the outside lateral then directly behind knee. Hurts to bend the knee, hurts when walking and standing, hurts even at night when trying to sleep. When trying to bend knee it (leg) feels heavy. At night it is more a throbbing pain that is not positional. I can walk into a store and within 15 minutes pain is bad and by the time I get back to the car very difficult to bend knee to get into the car. No known injury or even movement that initiated the problem. Massage therapist thinks it is the IT band- she worked the area and for about 30 minutes afterward I could bend the knee without pain and no heaviness. I do have an ortho apt in 3 weeks. It does not feel like previous knee pain.

### output:

Hello, I have studied your case. Definitive treatment for your disease may be kneed joint replacement. Total knee joint replacement patient find good difference in mobility after joint replacement. So you can do TKR after consulting joint replacement surgeon, there will not be any problem, probably.Post-operative Physiotherapy like ultrasound and tens will help, along with knee exercises for early recovery. For further details you can contact on my profile directly http://doctor.ChatDoctor .com/doctors/ Chat Doctor.  If you have additional questions or follow-up queries then please do not hesitate in writing to us. I will be happy to answer your queries. If you are satisfied with answer do not forget to give rating to this answer. Wishing you good health. Take care.