In medicine,<unk>  (from the Greek [χειρουργική] error: {{lang}}: text has italic markup (help) and latin [chirurgiae] error: {{lang}}: text has italic markup (help) meaning "hand work") is a 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, to help improve bodily function or appearance, or sometimes for some other reason.  An act of performing<unk>  may be called a<unk> ical procedure, operation, or simply<unk> .  In this context, the verb operating  means performing<unk> .  The adjective<unk> ical means pertaining to<unk> ; e.g.<unk> ical instruments or<unk> ical nurse.  The patient or subject that the<unk>  is being performed on can be a person or an animal.  A<unk> eon is a person who performs<unk>  on patients.  Persons described as<unk> eons are commonly medical practitioners, but the term is also applied to dentists and veterinarians.<unk>  can last from minutes to hours, but is typically not an ongoing or periodic type of treatment.
The term<unk>  can also refer to the place where<unk>  is performed, or simply the office of a physician, dentist, or veterinarian.
Surgery
Surgical suture
Blood substitutes
Implantation
Transfusion medicine
Steroid
Cosmetic surgery
Radiocontrast