In most cases, your doctor can tell you if you have osteoarthritis and recommend treatment based on your symptoms and by doing a physical exam. Your doctor may also do some other tests to be sure that the diagnosis is correct or to rule out other conditions that have similar symptoms.
X-raysX-rays. Pictures of the bones in a joint, such as the hip or knee, are taken to look for cartilage damage.
An arthroscopyAn arthroscopy. A thin, lighted tube called an arthroscope is placed inside a small cut made near the joint. The doctor uses the scope to look for problems on the surfaces of the joint and the soft tissues that surround it. This test is not done very often.