According to the General Chiropractic Council (GCC), chiropractic is  a health profession concerned with the diagnosis, treatment and prevention of mechanical disorders of the musculoskeletal system, and the effects of these disorders on the function of the nervous system and general health  .
obligation (Noun). The act of binding oneself by a social, legal, or moral tie to someone. obligation (Noun). A social, legal, or moral requirement, duty, contract, or promise that compels someone to follow or avoid a particular course of action.
An example of obligation is for a student to turn in his homework on time every day. 1  an obligating or being obligated. 2  a binding contract, promise, moral responsibility, etc.  a duty imposed legally or socially; thing that one is bound to do by contract, promise, moral responsibility, etc.