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About Chiropractic and Its Use in Treating Low-Back Pain

This is what the National Institute for Health has to say about chiropractic and its use for low back pain!

Treatment Information

* By treatment or therapy * By disease or condition

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* Key Points * What is chiropractic? * What is the history of the discovery and use of chiropractic? * Who uses chiropractic and for what health problems? * What kind of training do chiropractors receive? * What do chiropractors do in treating patients? * Have side effects or problems been reported from using chiropractic to treat back pain? * Does the government regulate chiropractic? * Do health insurance plans pay for chiropractic treatment? * What has scientific research found out about whether chiropractic works for low-back pain? * Are there scientific controversies associated with chiropractic? * Is NCCAM funding research on chiropractic? * For More Information * References * Appendix I * Appendix II Chiropractic ("kye-roh-PRAC-tic") is a form of health care that focuses on the relationship between the body's structure, primarily of the spine, and function. Doctors of chiropractic, who are also called chiropractors or chiropractic physicians, use a type of hands-on therapy called manipulationThe application of controlled force to a joint, moving it beyond the normal range of motion in an effort to aid in restoring health. Manipulation may be performed as a part of other therapies or whole medical systems, including chiropractic medicine, massage, and naturopathy. (or adjustment) as their core clinical procedure. While there are some differences in beliefs and approaches within the chiropractic profession, this Research Report will give you a general overview of chiropractic, discuss scientific research findings on chiropractic treatment for low-back pain, and suggest other sources of information. Key Points * Chiropractic is most often used to treat musculoskeletal conditions--problems with the muscles, joints, bones, and connective tissue such as cartilage, ligaments, and tendons. * Research studies of chiropractic treatment for low-back pain have been of uneven quality and insufficient to allow firm conclusions. Nonetheless, the overall sense of the data is that for low-back pain, chiropractic treatment and conventional medical treatments are about equally helpful. It is harder to draw conclusions about the relative value of chiropractic for other clinical conditions. * The risk of experiencing complications from chiropractic adjustment of the low back appears to be very low. However, the risk appears to be higher for adjustment of the neck. * It is important to inform all of your health care providers about any treatment that you are using or considering, including chiropractic. This will help each provider make sure that all aspects of your health care are working together.

1. What is chiropractic?

The word "chiropractic" combines the Greek words cheir (hand) and praxis (action) and means "done by hand." Chiropractic is an alternative medical system and takes a different approach from conventional medicineMedicine as practiced by holders of M.D. (medical doctor) or D.O. (doctor of osteopathy) degrees and by their allied health professionals such as physical therapists, psychologists, and registered nurses. (see box) in diagnosing, classifying, and treating medical problems. What is conventional medicine? Conventional medicine is medicine as practiced by holders of M.D. (Doctor of Medicine) or D.O. (Doctor of Osteopathic Medicine) degrees and by their allied health professionals, such as physical therapists, psychologists, and registered nurses. Other terms for conventional medicine include allopathy; Western, mainstream, orthodox, and regular medicine; and biomedicineMedicine as practiced by holders of M.D. (medical doctor) or D.O. (doctor of osteopathy) degrees and by their allied health professionals such as physical therapists, psychologists, and registered nurses.. What is complementary and alternative medicine (CAM)A group of diverse medical and health care systems, practices, and products that are not presently considered to be part of conventional medicine. Complementary medicine is used together with conventional medicine, and alternative medicine is used in place of conventional medicine.? Health care practices and products that are not presently considered to be part of conventional medicine are called CAM. Complementary medicine is used together with conventional medicine. Alternative medicine is used in place of conventional medicine. For more information on conventional medicine and CAM, see the NCCAM fact sheet "What Is Complementary and Alternative Medicine (CAM)?" The basic concepts of chiropractic can be described as follows: * The body has a powerful self-healing ability. * The body's structure (primarily that of the spine) and its function are closely related, and this relationship affects health. * Chiropractic therapy is given with the goals of normalizing this relationship between structure and function and assisting the body as it heals.

2. What is the history of the discovery and use of chiropractic?

Chiropractic is a form of spinal manipulation, which is one of the oldest healing practices. Spinal manipulation was described by Hippocrates in ancient Greece.1-3 In 1895, Daniel David Palmer founded the modern profession of chiropractic in Davenport, Iowa. Palmer was a self-taught healer and a student of healing philosophies of the day. He observed that the body has a natural healing ability that he believed was controlled by the nervous system. He also believed that subluxations, or misalignments of the spine (a concept that had already existed in the bonesetter and osteopathic traditions), interrupt or interfere with this "nerve flow." Palmer suggested that if an organ does not receive its normal supply of impulses from the nerves, it can become diseased. This line of thinking led him to develop a procedure to "adjust" the vertebrae, the bones of the spinal column, with the goal of correcting subluxations. Some chiropractors continue to view subluxation as central to chiropractic health care.2 However, other chiropractors no longer view the subluxation theory as a unifying theme in health and illness or as a basis for their practice. Other theories as to how chiropractic might work have been developed.

3. Who uses chiropractic and for what health problems?

In 1997, it was estimated that Americans made nearly 192 million visits a year to chiropractors.4 Over 88 million of those visits were to treat back or neck pain.5 In one recent survey, more than 40 percent of patients receiving chiropractic care were being treated for back or low-back problems.6 More than half of those surveyed said that their symptoms were chronic. Conditions commonly treated by chiropractors include back pain, neck pain, headaches, sports injuries, and repetitive strains. Patients also seek treatment of pain associated with other conditions, such as arthritis.7 Low-back pain is a common medical problem, occurring in up to one-quarter of the population each year. Most people experience significant back pain at least once during their lifetime.8 Several recent reviews on low-back pain have noted that in most cases acute low-back pain gets better in several weeks, no matter what treatment is used.8-10 Often, the cause of back pain is unknown, and it varies greatly in terms of how people experience it and how professionals diagnose it.11 This makes back pain challenging to study.

4. What kind of training do chiropractors receive?

Chiropractic training is a 4-year academic program consisting of both classroom and clinical instruction (see box). At least 3 years of preparatory college work are required for admission to chiropractic schools.12,13 Students who graduate receive the degree of Doctor of Chiropractic (D.C.) and are eligible to take state licensure board examinations in order to practice. Some schools also offer postgraduate courses, including 2- to 3-year residency programs in specialized fields.14 Chiropractic Training Chiropractic training typically includes12: * Coursework in anatomy, physiology, microbiology, biochemistry, pathology, nutrition, public health, and many other subjects * The principles and practice of chiropractic * Research methods and procedures * Direct experience in caring for patients The Council on Chiropractic Education, an agency certified by the U.S. Department of Education, is the accrediting body for chiropractic colleges in the United States.14

5. What do chiropractors do in treating patients?

If you become a chiropractic patient, during your initial visit the chiropractor will take your health history. He will perform a physical examination, with special emphasis on the spine, and possibly other examinations or tests such as x-rays.15 If he determines that you are an appropriate candidate for chiropractic therapy, he will develop a treatment plan. When the chiropractor treats you, he may perform one or more adjustments. An adjustment (also called a manipulation treatment) is a manual therapy, or therapy delivered by the hands. Given mainly to the spine, chiropractic adjustments involve applying a controlled, sudden force to a joint. They are done to increase the range and quality of motion in the area being treated. Other health care professionals--including physical therapists, sports medicine doctors, orthopedists, physical medicine specialists, doctors of osteopathic medicine, doctors of naturopathic medicineA whole medical system that originated in Europe. Naturopathy aims to support the body's ability to heal itself through the use of dietary and lifestyle changes together with CAM therapies such as herbs, massage, and joint manipulation., and massagePressing, rubbing, and moving muscles and other soft tissues of the body, primarily by using the hands and fingers. The aim is to increase the flow of blood and oxygen to the massaged area. therapists--perform various types of manipulation. In the United States, chiropractors perform over 90 percent of manipulative treatments.16 Most chiropractors use other treatments in addition to adjustment, such as mobilization, massage, and nonmanual treatments (see examples in the box).1 Examples of Nonmanual Chiropractic Treatments1 * Heat and ice * Ultrasound * Electrical stimulation * Rehabilitative exercise * Magnetic therapy * Counseling about diet, weight loss, and other lifestyle factors * Dietary supplements * Homeopathy * Acupuncture To find out more about magnetic therapyThe use of magnets or magnetic devices for health purposes., homeopathyA whole medical system that originated in Europe. Homeopathy seeks to stimulate the body's ability to heal itself by giving very small doses of highly diluted substances that in larger doses would produce illness or symptoms (an approach called "like cures like")., acupunctureA family of procedures that originated in traditional Chinese medicine. Acupuncture is the stimulation of specific points on the body by a variety of techniques, including the insertion of thin metal needles though the skin. It is intended to remove blockages in the flow of qi and restore and maintain health., and other CAM therapies, contact the NCCAM Clearinghouse (see "For More Information").

6. Have side effects or problems been reported from using chiropractic to treat back pain?

Patients may or may not experience side effects from chiropractic treatment. Effects may include temporary discomfort in parts of the body that were treated, headache, or tiredness. These effects tend to be minor and to resolve within 1 to 2 days.7,17 The rate of serious complications from chiropractic has been debated. There have been no organized prospective studies on the number of serious complications. From what is now known, the risk appears to be very low.14,16,17 It appears to be higher for cervical-spine, or neck, manipulation (e.g., cases of stroke have been reported18,19). The rare complication of concern from low-back adjustment is cauda equina syndrome, estimated to occur once per millions of treatments (the number of millions varies; one study placed it at 100 million16).1,20,a For your safety, it is important to inform all of your health care providers about any care or treatments that you are using or considering, including chiropractic. This is to help ensure a coordinated course of care (to find out more, see the NCCAM fact sheet "Selecting a Complementary and Alternative Medicine Practitioner"). aMore information on the topic of complications can be found in references 1-3, 14, 21, and 22, and in scientific databases such as CAM on PubMed (see "For More Information").

7. Does the government regulate chiropractic?

Chiropractic practice is regulated individually by each state and the District of Columbia. Most states require chiropractors to earn continuing education credits to maintain their licenses.1,13 Chiropractors' scope of practice varies by state--including with regard to laboratory tests or diagnostic procedures, the dispensing or selling of dietary supplements, and the use of other CAM therapies such as acupuncture or homeopathy.13,14,23 Chiropractors are not licensed in any state to perform major surgery or prescribe drugs.b bIn Oregon, chiropractors can become certified to perform minor surgery (such as stitching cuts) and to deliver children by natural childbirth.14,23,24

8. Do health insurance plans pay for chiropractic treatment?

Compared with CAM therapies as a whole (few of which are reimbursed), coverage of chiropractic by insurance plans is extensive. As of 2002, more than 50 percent of health maintenance organizations (HMOs), more than 75 percent of private health care plans, and all state workers' compensation systems covered chiropractic treatment.1 Chiropractors can bill Medicare, and over two dozen states cover chiropractic treatment under Medicaid.23 If you have health insurance, check whether chiropractic care is covered before you seek treatment. Your plan may require care to be approved in advance, limit the number of visits covered, and/or require that you use chiropractors within its network (read more in the NCCAM fact sheet "Consumer Financial Issues in Complementary and Alternative Medicine").

9. What has scientific research found out about whether chiropractic works for low-back pain?

For this report, the results of individual clinical trials and reviews of groups of clinical trials were examined. Sources were drawn from the National Library of Medicine's PubMed database; were published in English; and studied chiropractic techniques that were identified as such (e.g., "chiropractic manipulation") rather than some other forms of "manipulation" or "spinal manipulation therapy"--which, as noted above, may be delivered by certain other health care providers.c Clinical Trials A clinical trial is a research study in which a treatment or therapy is tested in people to see whether it is safe and effective. Clinical trials are a key part of the process in finding out which treatments work, which do not, and why. Clinical trial results also contribute new knowledge about diseases and medical conditions. To find out more, see NCCAM's fact sheet "About Clinical Trials and Complementary and Alternative Medicine." So far, the scientific research on chiropractic and low-back pain has focused on if, and how well, chiropractic care helps in relieving pain and other symptoms that people have with low-back pain. This research often compares chiropractic to other treatments. Research studies Appendix I gives detailed findings from seven controlled clinical trials and one prospective observational study of chiropractic treatment for low-back pain published between January 1994 and June 2003. Summary of the research findings The studies all found at least some benefit to the participants from chiropractic treatment. However, in six of the eight studies, chiropractic and conventional treatments were found to be similar in effectiveness.22,25-29 One trial found greater improvement in the chiropractic group than in groups receiving either sham manipulation or back school.30. Another trial found treatment at a chiropractic clinic to be more effective than outpatient hospital treatment.31 General reviews, systematic reviews, and meta-analyses Appendix II lists three reviews of clinical trials on chiropractic treatment for back pain, published between October 1996 and June 2003. Summary of the research findings Overall, the evidence was seen as weak and less than convincing for the effectiveness of chiropractic for back pain. Specifically, the 1996 systematic review reported that there were major quality problems in the studies analyzed; for example, statistics could not be effectively combined because of missing and poor-quality data. The review concludes that the data "did not provide convincing evidence for the effectiveness of chiropractic."32 The 2003 general review states that since the 1996 systematic review, emerging trial data "have not tended to be encouraging´┐Ż. The effectiveness of chiropractic spinal manipulation for back pain is thus at best uncertain."33 The 2003 meta-analysis found spinal manipulation to be more effective than sham therapy but no more or no less effective than other treatments.10 Several other points are helpful to keep in mind about the research findings. Many clinical trials of chiropractic analyze the effects of chiropractic manipulation alone, but chiropractic practice includes more than manipulation (see Question 5).34 Results of a trial performed in one setting (such as a managed care organization or a chiropractic college) may not completely apply in other settings.29,35 And, researchers have observed that the placebo effect may be at work in chiropractic care,34 as in other forms of health care. cThis fact sheet often uses the term "adjustment" to refer to chiropractic manipulation. In Question 9 and Appendices I and II, "manipulation" is used where it is used in the source(s) on chiropractic being discussed.

10. Are there scientific controversies associated with chiropractic?

Yes, there are scientific controversies about chiropractic, both inside and outside the profession. For example, within the profession, there have been disagreements about the use of physical therapy techniques, which techniques are most appropriate for certain conditions, and the concept of subluxations. Outside views have questioned the effectiveness of chiropractic treatments, their scientific basis, and the potential risks in subsets of patients (for example, the risks of certain types of adjustments to patients with osteoporosis or risk factors for osteoporosis, compared to patients with healthier bone structures33,36). Research studies on chiropractic are ongoing. The results are expected to expand scientific understanding of chiropractic. A key area of research is the basic science of what happens in the body (including its cells and nerves) when specific chiropractic treatments are given.

11. Is NCCAM funding research on chiropractic?

Yes. For example, recent projects supported by NCCAM include: * Comparing conventional medical care for acute back pain with an "expanded benefits" package (consisting of conventional care plus a choice of chiropractic, massage, or acupuncture) * Finding out what happens (through measurement) in the lumbar portion of the spine after chiropractic positioning and adjustment * Evaluating the effects of the speed of spinal adjustment on muscles and nerves * Studying the effectiveness of chiropractic adjustment for a variety of conditions, including neck pain, chronic pelvic pain, and temporomandibular disorders (TMD) in the jaw

For More Information

* NCCAM Clearinghouse Toll-free in the U.S.: 1-888-644-6226 International: 301-519-3153 TTY (for deaf and hard-of-hearing callers): 1-866-464-3615 E-mail: info@nccam.nih.gov NCCAM Web site: nccam.nih.gov Address: NCCAM Clearinghouse, P.O. Box 7923, Gaithersburg, MD 20898-7923 Fax: 1-866-464-3616 The NCCAM Clearinghouse provides information on CAM and on NCCAM. Services include fact sheets, other publications, and searches of Federal databases of scientific and medical literature. The Clearinghouse does not provide medical advice, treatment recommendations, or referrals to practitioners. * National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) Web site: www.niams.nih.gov Toll-free in the U.S.: 1-877-22-NIAMS (or 301-495-4484) NIAMS supports research into the causes, treatment, and prevention of arthritis and musculoskeletal and skin diseases; training of scientists; and information based on research. Publications are available. * Agency for Healthcare Research and Quality (AHRQ) Web site: www.ahrq.gov Telephone: 301-427-1364 AHRQ is the health services research arm of the Department of Health and Human Services. Publications that may be of interest include Chiropractic in the United States: Training, Practice, and Research (1998) and AHRQ's Clinical Practice Guideline No. 14: Acute Low-Back Problems in Adults (1994; however, this document has been archived by AHRQ and is not considered current clinical guidance). * CAM on PubMed Web site: www.nlm.nih.gov/nccam/camonpubmed.html CAM on PubMed, a database on the Internet developed jointly by NCCAM and the National Library of Medicine, offers citations to (and in most cases, brief summaries of) articles on CAM in scientifically based, peer-reviewed journals. CAM on PubMed also links to many publisher Web sites, which may offer the full text of articles. * ClinicalTrials.gov Web site: www.clinicaltrials.gov ClinicalTrials.gov is a database of information on clinical trials, primarily in the United States and Canada, for a wide range of diseases and conditions. It is sponsored by the National Institutes of Health and the U.S. Food and Drug Administration. * The Cochrane Library Web site: www.cochrane.org/reviews/clibintro.htm The Cochrane Library is a collection of science-based reviews from the Cochrane Collaboration, an international nonprofit organization that seeks to provide "up-to-date, accurate information about the effects of health care." Its authors analyze the results of rigorous clinical trials on a given topic and prepare systematic reviews. Abstracts (brief summaries) of these reviews can be read online without charge. You can search by treatment name or medical condition. Subscriptions to the full text are offered at a fee and are carried by some libraries.

References

1. Meeker WC, Haldeman S. Chiropractic: a profession at the crossroads of mainstream and alternative medicine. Annals of Internal Medicine. 2002;136(3):216-227. 2. Kaptchuk TJ, Eisenberg DM. Chiropractic: origins, controversies, and contributions. Archives of Internal Medicine. 1998;158(20):2215-2224. 3. Bronfort G. Spinal manipulation: current state of research and its indications. Neurologic Clinics. 1999;17(1):91-111. 4. Eisenberg DM, Davis RB, Ettner SL, et al. Trends in alternative medicine use in the United States, 1990-1997: results of a follow-up national survey. Journal of the American Medical Association. 1998;280(18):1569-1575. 5. Wolsko PM, Eisenberg DM, Davis RB, et al. Patterns and perceptions of care for treatment of back and neck pain: results of a national survey. Spine. 2003;28(3):292-297. 6. Coulter ID, Hurwitz EL, Adams AH, et al. Patients using chiropractors in North America: who are they, and why are they in chiropractic care? Spine. 2002;27(3):291-296. 7. Vickers A, Zollman C. ABC of complementary medicine. The manipulative therapies: osteopathy and chiropractic. BMJ. 1999;319(7218):1176-1179. 8. Atlas SJ, Nardin RA. Evaluation and treatment of low back pain: an evidence-based approach to clinical care. Muscle and Nerve. 2003;27(3):265-284. 9. Pengel HM, Maher CG, Refshauge KM. Systematic review of conservative interventions for subacute low back pain. Clinical Rehabilitation. 2002;16(8):811-820. 10. Assendelft WJ, Morton SC, Yu EI, et al. Spinal manipulative therapy for low back pain. Annals of Internal Medicine. 2003;138(11):871-881. 11. Complementary medicine: fact and fiction about chiropractic. Harvard Health Letter. 1999;24(3):1-3. 12. The Council on Chiropractic Education. Standards for Doctor of Chiropractic Programs and Requirements for Institutional Status January 2003. Council on Chiropractic Education Web site. Accessed at www.cce-usa.org on June 16, 2003. 13. Eisenberg DM, Cohen MH, Hrbek A, et al. Credentialing complementary and alternative medical providers. Annals of Internal Medicine. 2002;137(12):965-973. 14. Agency for Health Care Policy and Research. Chiropractic in the United States: Training, Practice, and Research. Rockville, MD: Agency for Health Care Policy and Research; 1998. AHCPR publication no. 98-N002. 15. Dagenais S, Haldeman S. Chiropractic. Primary Care. 2002;29(2):419-437. 16. Shekelle PG, Adams AH, Chassin MR, et al. Spinal manipulation for low-back pain. Annals of Internal Medicine. 1992;117(7):590-598. 17. Senstad O, Leboeuf-Yde C, Borchgrevink C. Frequency and characteristics of side effects of spinal manipulative therapy. Spine. 1997;22(4):435-440. 18. Hufnagel A, Hammers A, Schonle PW, et al. Stroke following chiropractic manipulation of the cervical spine. Journal of Neurology. 1999;246(8):683-688. 19. Jeret JS, Bluth M. Stroke following chiropractic manipulation: report of 3 cases and review of the literature. Cerebrovascular Diseases. 2002;13(3):210-213. 20. Haldeman S, Rubinstein SM. Cauda equina syndrome in patients undergoing manipulation of the lumbar spine. Spine. 1992;17(12):1469-1473. 21. Haldeman S, Rubinstein SM. Compression fractures in patients undergoing spinal manipulative therapy. Journal of Manipulative and Physiological Therapeutics. 1992;15(7):450-454. 22. Hurwitz EL, Morgenstern H, Harber P, et al. A randomized trial of medical care with and without physical therapy and chiropractic care with and without physical modalities for patients with low back pain: 6-month follow-up outcomes from the UCLA low back pain study. Spine. 2002;27(20):2193-2204. 23. Cooper RA, Henderson T, Dietrich CL. Roles of nonphysician clinicians as autonomous providers of patient care. Journal of the American Medical Association. 1998;280(9):795-802. 24. Chiropractic regulatory boards. Federation of Chiropractic Licensing Boards Web site. Accessed at www.fclb.org/boards.htm on June 16, 2003. 25. Hsieh CY, Adams AH, Tobis J, et al. Effectiveness of four conservative treatments for subacute low back pain: a randomized clinical trial. Spine. 2002;27(11):1142-1148. 26. Cherkin DC, Deyo RA, Battie M, et al. A comparison of physical therapy, chiropractic manipulation, and provision of an educational booklet for the treatment of patients with low back pain. New England Journal of Medicine. 1998;339(15):1021-1029. 27. Bronfort G, Goldsmith CH, Nelson CF, et al. Trunk exercise combined with spinal manipulative or NSAID therapy for chronic low back pain: a randomized, observer-blinded clinical trial. Journal of Manipulative and Physiological Therapeutics. 1996;19(9):570-582. 28. Carey TS, Garrett J, Jackman A, et al. The outcomes and costs of care for acute low back pain among patients seen by primary care practitioners, chiropractors, and orthopedic surgeons. The North Carolina Back Pain Project. New England Journal of Medicine. 1995;333(14):913-917. 29. Pope MH, Phillips RB, Haugh LD, et al. A prospective randomized three-week trial of spinal manipulation, transcutaneous muscle stimulation, massage and corset in the treatment of subacute low back pain. Spine. 1994;19(22):2571-2577. 30. Triano JJ, McGregor M, Hondras MA, et al. Manipulative therapy versus education programs in chronic low back pain. Spine. 1995;20(8):948-955. 31. Meade TW, Dyer S, Browne W, et al. Randomised comparison of chiropractic and hospital outpatient management for low back pain: results from extended follow up. BMJ. 1995;311(7001):349-351. 32. Assendelft WJ, Koes BW, van der Heijden GJ, et al. The effectiveness of chiropractic for treatment of low back pain: an update and attempt at statistical pooling. Journal of Manipulative and Physiological Therapeutics. 1996;19(8):499-507. 33. Ernst E. Chiropractic spinal manipulation for back pain. British Journal of Sports Medicine. 2003;37(3):195-196. 34. Ernst E. Chiropractic care: attempting a risk-benefit analysis. American Journal of Public Health. 2002;92(10):1603-1604. 35. Hurwitz EL, Morgenstern H, Harber P, et al. A randomized trial of chiropractic manipulation and mobilization for patients with neck pain: clinical outcomes from the UCLA neck-pain study. American Journal of Public Health. 2002;92(10):1634-1641. 36. Sran MM. Commentary on "Chiropractic spinal manipulation for back pain." British Journal of Sports Medicine. 2003;37:196. Top Appendix I Research Studies of Chiropractic Treatment in Adults with Back Pain Published from January 1994 through June 2003 Citation Description Findings Hurwitz et al., 200222 Randomized clinical trial (RCT) of patients in a managed care organization compared chiropractic cared (with and without any of the following added: heat or cold therapy, ultrasound, electrical muscle stimulation) with conventional medical care (with and without physical therapy added). Participants (652) had acute, subacute, or chronic low-back pain with or without leg pain. Back-pain intensity and back-related disability were measured. After 6 months of followup, the conventional medical care and chiropractic regimens were found to be comparably effective. Hsieh et al., 200225 RCT compared four treatments for subacute low-back pain (LBP): "joint manipulation" by a chiropractor, back school (program of counseling and exercises), myofascial therapy, and joint manipulation plus myofascial therapy. Participants (178) had LBP for either >3 weeks but <6 months in a current episode or >2 months within the preceding 8 months for recurrent LBP, and were evaluated 3 weeks and 6 months after treatment. No statistically significant differences were found between groups at 3 weeks or 6 months. Cherkin et al., 199826 RCT in an HMO setting of 321 adults aged 20-64 with low-back pain. Patients received either chiropractic manipulation, physical therapy (PT), or a booklet on self-managing back pain. They were monitored for 2 years and evaluated for bothersomeness of symptoms and level of dysfunction. The outcomes for those who received manipulation or PT were better than those who received the booklet, but "only marginally better." There were no significant differences between the manipulation and PT groups. Authors note that manipulation and PT "may slightly reduce symptoms." Bronfort et al., 199627 For chronic low-back pain, prospective RCT compared (1) chiropractic spinal manipulation therapy (SMT) plus trunk-strengthening exercises with (2) chiropractic SMT plus trunk-stretching exercises and (3) trunk-strengthening exercises combined with an NSAID (drug). Enrollees (174) were measured for low-back pain, disability, and functional health status at 5 and 11 weeks. Each of the 3 regimens yielded a "similar and clinically important improvement over time that was considered superior to the expected natural history of long-standing chronic low back pain." Carey et al., 199528 Prospective observational study on the outcomes of care for acute low-back pain by chiropractors, primary care practitioners, and orthopedic surgeons, including how long it took to return to functional status. Participants (1,633) had acute pain of less than 10 weeks' duration. Time to recovery was "essentially the same," regardless of which provider provided the care. Meade et al., 199531 RCT of 741 patients who came to chiropractic and hospital outpatient clinics in 11 centers, for low-back pain. Participants were randomized to receive either chiropractic or hospital-outpatient management. Outcomes were measured mainly with a pain disability questionnaire, at 6 weeks, 6 months, and 1, 2, and 3 years. Chiropractic was found to be more effective, especially for those with "short current episodes, a history of back pain, and initially high [pain scale] scores." Benefit was less evident at 2 and 3 years than earlier. Authors noted that further trials are needed, e.g., on specific components of chiropractic. Triano et al., 199530 RCT comparing chiropractic spinal manipulation, sham manipulation, and a back education program. Participants (170) had low-back pain (lasting 7 weeks or longer or consisting of at least 6 episodes in 12 months) and were evaluated for pain and activity tolerance at enrollment, after 2 weeks of treatment, and after 2 weeks of no treatment. Greater improvement was found in the manipulation group than in other groups. Pain relief continued to end of evaluation period. Pope et al., 199429 Prospective RCT compared chiropractic spinal manipulation for treatment of subacute low-back pain to massage, use of a corset, and TMS (electrical muscle stimulation). Patients (164) were treated for 3 weeks and evaluated through various standardized instruments and examinations. Various improvements were seen in all 4 groups. The manipulation group had the most improvement in flexion and pain. However, authors concluded overall that none of the changes in physical outcomes measured was significantly different between groups. dHurwitz et al. define chiropractic care as "spinal manipulation or another spinal-adjusting technique." Top Appendix II Reviews on Chiropractic Treatment for Back Pain in Adults Published from October 1996 through June 2003 Citation Description Findings Assendelft et al., 200310,e Meta-analysis of 39 randomized clinical trials of treatments for acute or chronic low-back pain in adults. The trials compared spinal manipulation (by chiropractors and other health care providers) with another treatment or control condition (including no treatment, conventional medical care, pain-relieving drugs, physical therapy, exercise, and back school). Spinal manipulation was more effective than sham therapy, but no more or no less effective than other treatments. Authors found that the specific profession of the manipulators (including chiropractors) did not affect these results. Ernst, 200333 General review of the scientific evidence for the effectiveness of chiropractic spinal manipulation for back pain (this review is not limited to low-back pain studies). Author noted there has been only one systematic review of chiropractic spinal manipulation exclusively (Assendelft et al., 1996, see below), and that, since that study, emerging trial data "have not tended to be encouraging´┐Ż. The effectiveness of chiropractic spinal manipulation for back pain is thus at best uncertain." Assendelft et al., 199632 Systematic review of 8 RCTs of chiropractic for acute or chronic low-back pain. Authors stated that all studies analyzed had serious flaws in design, execution, and reporting. Studies could not be pooled to reach statistical conclusions because of insufficient data and data quality problems. Authors summarized the available data narratively; concluded they "did not provide convincing evidence for the effectiveness of chiropractic for acute or chronic low back pain"; and noted that better-executed trials are needed in future. eThis study on spinal manipulation is included because the authors were able to break down the findings according to the profession of the manipulator, including chiropractors. This publication is not copyrighted and is in the public domain. Duplication is encouraged. NCCAM has provided this material for your information. It is not intended to substitute for the medical expertise and advice of your primary health care provider. We encourage you to discuss any decisions about treatment or care with your health care provider. The mention of any product, service, or therapy is not an endorsement by NCCAM. National Institutes of Health U.S. Department of Health and Human Services NCCAM Publication No. D196 November 2003

THE AGENCY ON HEALTH CARE POLICY AND RESEARCH STUDY On December 8, 1994, the Agency for Health Care Policy and Research (AHCPR) of the US Department of Health and Human Services released Clinical Practice Guidelines for the management of acute low back pain. Their guidelines were developed after extensive study of diagnostic and treatment methods for acute low back pain. The guidelines were created by the AHCPR panel to provide primary care clinicians with information and recommended strategies for the assessment and treatment of acute low back problems. The AHCPR panel was made up of 23 members consisting of medical doctors, chiropractic doctors, nurses, experts in spinal research, physical therapists, an occupational therapist, a psychologist, and a consumer representative. The following conclusions were made in this landmark study: * Conservative treatment such as spinal manipulation should be pursued in most before cases considering surgical intervention; * Prescription drugs such as oral steroids, antidepressant medications and colchicine are not recommended for acute low back problems. Other interesting finds included: * The risk of serious complications from lumbar spinal manipulation is rare; * There is currently no evidence supporting the use of trigger point, ligamentous and facet injections, needle acupuncture or dry needling as treatment for acute back problems; * The panel found no evidence of benefit from the application of physical agents and modalities such as ice, heat, massage, traction, ultrasound, cutaneous laser treatment, transcutaneous electrical nerve stimulation (T.E.N.S.) and biofeedback techniques. Acute Low Back Problems in Adults. Clinical Practice Guidelines. Bigos S, et al. Agency for Health Care Policy and Research Publication No. 950642 (1994) - U.S. Department of Health and Human Services.

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