If your doctor recommends arthroscopic surgery for your shoulder problem, you can expect this to be done as a procedure that involves a day of hospitalization or in most of the cases, it may become an ambulatory procedure. You will have the respective pre-surgery exams and evaluations the day before or the same day of surgery, and you will be instructed not to eat or drink anything after midnight of the night before your arthroscopic procedure. The shoulder arthroscopy is performed under general anesthesia, which will put you to sleep during the surgery. The procedure is usually done between 1½ and 2½ hours. Your doctor will use an arthroscope (miniature telescope) to see the intra-articular structures of the shoulder joint. Using small instruments, the surgeon will then make tiny incisions and perform the corrective measures dictated for your particular injury. The most frequent injuries to be treated in the shoulder include tears or ruptures of the rotator cuff, injuries of the glenoid labrum (SLAP), exocytosis of the thrower, sub-acromial bursitis and others.