A bonesetter is a practitioner of joint manipulation. Before the advent of chiropractors, osteopaths, and physical therapists, bonesetters were the main providers of this type of treatment. Traditionally, they practiced without any sort of formal training in accepted medical procedures. Bonesetters would also reduce joint dislocations and "re-set" bone fractures.
Chiropractic is a form of alternative medicine mostly concerned with the diagnosis and treatment of mechanical disorders of the musculoskeletal system, especially the spine.
Spinal manipulation, which chiropractors call "spinal adjustment" or "chiropractic adjustment", is the most common treatment used in chiropractic care.