Chiropractic spinal manipulation (commonly referred to as a chiropractic adjustment) is a drug-free, non-invasive manual procedure with a primary goal to treat areas of decreased movement in the joints of the body, particularly the spine, which can create a reaction in surrounding tissues (ligaments, muscles and nerves) resulting in pain, dysfunction and muscular spasm. Chiropractors assess disorders related to the spine, nervous system, and joints of the extremities and provide diagnosis, treatment and management of those disorders