 Namaskara, I am Dr. Merlina, the orthopedic surgeon working in Manipal Hospital, Bangalore. In surgery, we introduce a telescope and depending upon the condition, we will do the surgery. If there is a ligament injury, which requires a ligament reconstruction, in that condition we take a ligament from other part of the body and fix it in the joint. That is commonly done for the anterior cruciate ligament of the knee joint. We take a ligament from the thigh area and fix it with the screws or some clip. Nowadays, we are fixing the ligament without any screws and now that is a screwless surgery. Sometimes we do this surgery for removal of the loose bodies from the joint or trimming of some of the ligaments which will be obstructing the joint or aligning the kneecap bone. These are the common conditions in which we do arthroscopic surgeries.