hi there should be fresh x ray and MRI to know extent of knee joint disease.Euflexxa shots once a month for 5 months are also helpful, your doctor may decide when to use it depending on cartilage damage.There are glucosamine tablets, and NSAIDS pain medicines which can be tried along with physical therapy, hotfomentation, mild knee exercises etc. But first careful evaluation radiologically must be undertaken, whether conservative treatment will suffice or some surgery indicated.For tolerable symptoms and movable joint, conservative treatment as above with medications is enough Best wishes gh