Chiropractic is a branch of the healing arts which is concerned with human health and disease processes. Doctors of Chiropractic are physicians who consider man as an integrated being and give special attention to the physiological and biochemical aspects including structural, spinal, musculoskeletal, neurological, vascular, nutritional, emotional and environmental relationships.

The practice and procedures which may be employed by Doctors of Chiropractic are based on the academic and clinical training received in and through accredited chiropractic colleges and include, but are not limited to, the use of current diagnostic and therapeutic procedures. Such procedures specifically include the adjustment and manipulation of the articulations and adjacent tissues of the human body, particularly of the spinal column. Included is the treatment of intersegmental aberrations for alleviation of related functional disorders.

Chiropractic is a drug-free, non-surgical science and, as such, does not include pharmaceuticals or incisive surgery. Due regard shall be given to the fact that state laws, as well as the nation's antitrust laws, may allow Doctors of Chiropractic to utilize ancillary health care procedures commonly referred to as being in the common domain.

The first paper below shows the large evidence base, effectiveness and safty of chiroptactic.

Spinal Manipulation Utilization and Methods paper 

History, Education, and Scope of Chiropractic Care