Arthroscopic rotator cuff repair generally takes between one and two hours. It usually be performed under general anesthesia which means you will sleep through the surgery. An arthroscope is like a thin telescope with a light source used to magnify the structures inside the injured area of the shoulder allowing evaluation and treatment. After evaluating the shoulder joint using the arthroscopic camera, the surgeon can introduce surgical instruments via very few small incisions in the skin surrounding the shoulder to clean out damaged tissue, remove bone spurs, and reattach damaged tendons to the bones where they have torn off. Patients undergoing arthroscopic surgery can have varying diagnoses and pre-existing conditions. Surgeries vary widely and are patient specific.