Be the first person to write an overview of "major surgery".
Surgery (from the Greek: χειρουργική cheirourgikē (composed of χείρ, "hand", and έργον, "work"), via Latin: chirurgiae, meaning "hand work") is an ancient medical specialty that uses operative manual and instrumental techniques on a patient to investigate and/or treat a pathological condition such as disease or injury, or to help improve bodily function or appearance.