In Knee Arthroscopy, Surgeon will make 3 incision, one above and 2 below the patella bone. Surgical Instrument is passed through third cannula. Watch 3D video of Diagnostic, Therapeutic, Surgery procedure.
2. What is Osteoarthritis of the Knee & What are its Causes, Signs & Symptoms http://www.epainassist.com/sports-injuries/knee-injuries/osteoarthritis-of-the-knee