There are two types of chiropractors: those who focus on the musculoskeletal system and those who focus on the nervous system. Musculoskeletal chiropractors treat disorders of the bones, muscles, and joints. They use a variety of techniques to adjust the spine and other joints in the body. Nervous system chiropractors treat disorders of the nervous system. They use a variety of techniques to adjust the spinal cord and other nerves in the body.