The World Health Organization found chiropractic care in general is safe when employed skillfully and appropriately. There is not sufficient data to establish the safety of chiropractic manipulations. Manipulation is regarded as relatively safe but complications can arise, and it has known adverse effects, risks and contraindications. Absolute contraindications to spinal manipulative therapy are conditions that should not be manipulated; these contraindications include rheumatoid arthritis and conditions known to result in unstable joints. Relative contraindications are conditions where increased risk is acceptable in some situations and where low-force and soft-tissue techniques are treatments of choice; these contraindications include osteoporosis. Although most contraindications apply only to manipulation of the affected region, some neurological signs indicate referral to emergency medical services; these include sudden and severe headache or neck pain unlike that previously experienced. Indirect risks of chiropractic involve delayed or missed diagnoses through consulting a chiropractor.
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There is no good evidence that chiropractic is effective for the treatment of any medical condition, except perhaps for certain kinds of back pain. Generally, the research carried out into the effectiveness of chiropractic has been of poor quality. Numerous controlled clinical studies of treatments used by chiropractors have been conducted, with conflicting results. Research published by chiropractors is distinctly biased. For reviews of SM for back pain chiropractic authors tend to have positive conclusions, while others did not show any effectiveness.
Chiropractic has seen considerable controversy and criticism. Although D.D. and B.J. were "straight" and disdained the use of instruments, some early chiropractors, whom B.J. scornfully called "mixers", advocated the use of instruments. In 1910, B.J. changed course and endorsed X-rays as necessary for diagnosis; this resulted in a significant exodus from the Palmer School of the more conservative faculty and students. The mixer camp grew until by 1924 B.J. estimated that only 3,000 of the U.S.'s 25,000 chiropractors remained straight. That year, B.J.'s invention and promotion of the neurocalometer, a temperature-sensing device, was highly controversial among B.J.'s fellow straights. By the 1930s, chiropractic was the largest alternative healing profession in the U.S.
D.D. Palmer opened the first chiropractic school two years later, and in the century since, chiropractic professionals have used spinal adjustments to help people prevent and cope with back pain, carpal tunnel, muscle strain, headaches and migraines, and a variety of other physical ailments. Millions of people benefit from the work of Dr. Palmer today.
Jump up ^ Weeks, William B; Goertz, Christine M; Meeker, William C; Marchiori, Dennis M (2015-01-01). "Public Perceptions of Doctors of Chiropractic: Results of a National Survey and Examination of Variation According to Respondents' Likelihood to Use Chiropractic, Experience With Chiropractic, and Chiropractic Supply in Local Health Care Markets". Journal of Manipulative and Physiological Therapeutics. 38 (8): 533–44. doi:10.1016/j.jmpt.2015.08.001. PMID 26362263.
Chiropractors use hands-on spinal manipulation and other alternative treatments, the theory being that proper alignment of the body's musculoskeletal structure, particularly the spine, will enable the body to heal itself without surgery or medication. Manipulation is used to restore mobility to joints restricted by tissue injury caused by a traumatic event, such as falling, or repetitive stress, such as sitting without proper back support.