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.
Synonyms: force, compel, coerce, oblige, obligate. These verbs mean to cause one to follow a prescribed or dictated course against one's will. Force, the most general, usually implies the exertion of physical power or the operation of circumstances that permit no options: The driver was forced from his car at gunpoint.