Knee Arthroscopy is a minimally invasive surgical procedure for the examination and sometimes treatment of damaged structures of the knee. The procedure is performed using a pencil-thin camera lens (arthroscope), that is inserted through a very small incision near the knee joint. Sterile fluid is used to fill the joint, making it easier to visualize internal knee structures. If the surgeon detects damage in need of repair, a second small incision is made and special instruments are inserted to treat the damaged area. This type of surgical procedure Usually takes 20-40 minutes to complete and is routinely performed under general anesthesia.