Hello, I have studied your case. Nsaid medication like Arthrotec will give lot of side effects on long term use. You should not continue medication with large dosage. You can start cartilage protecting medication like chondritin sulphate twice daily, that you need to take for couple of months. Physiotherapy like ultrasound and tens will help, along with knee exercises Life style changes will help in reducing pain which include, ACTIVITY MODIFICATION -It is important to maintain as much activity and joint motion as possible, but impact activities will aggravate arthritis. Running and jumping will often accelerate cartilage loss from the joint. The key is to focus on low impact activities, such as swimming or cycling. VISCOSUPPLEMENTATION: Hyaluronic acid injections given into the joint (especially large joints like knee joint) in prescribed dosages will give good short term pain relief in arthritic joints ranging from 1-2 years. You need to consult orthopaedic surgeon for taking it. Hope this answers your query. 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