A subluxation-based program of periodic spinal examinations and "adjustments" alleged to help maintain the patient's health. This is a type of "preventive maintenance.

Treatment given in the absence of significant symptomatology; well-person care; preventative or prophylactic care

Care given to people with chronic diseases or conditions to keep them from getting worse. For example, exercise and physical therapy can minimize abnormal or painful positioning of the joints and may prevent or delay curvature of the spine in a person with Muscular Dystrophy.

Service and supplies furnished primarily to maintain rather than improve a level of physical or mental function.