Arthroscopic surgery is a minimally invasive procedure performed using an arthroscope through small button-hole like keyhole skin incisions. An arthroscope is a pen-like telescopic camera which is used to look-into a joint to diagnose and treat joint pathologies. The diameter of a standard arthroscopy is 4 mm for large joints and 2.7 mm for small joints. An arthroscope can be used to treat all major joints.