Radiculopathy. A 2013 systematic review and meta-analysis found a statistically significant improvement in overall recovery from sciatica following SM, when compared to usual care, and suggested that SM may be considered.[101] There is moderate quality evidence to support the use of SM for the treatment of acute lumbar radiculopathy[102] and acute lumbar disc herniation with associated radiculopathy.[103] There is low or very low evidence supporting SM for chronic lumbar spine-related extremity symptoms and cervical spine-related extremity symptoms of any duration and no evidence exists for the treatment of thoracic radiculopathy.[102]
The percentage of the population that utilizes chiropractic care at any given time generally falls into a range from 6% to 12% in the U.S. and Canada,[207] with a global high of 20% in Alberta in 2006.[208] In 2008, chiropractors were reported to be the most common CAM providers for children and adolescents, consuming up to 14% of all visits to chiropractors.[209] In 2008, there were around 60,000 chiropractors practicing in North America.[4] In 2002–03, the majority of those who sought chiropractic did so for relief from back and neck pain and other neuromusculoskeletal complaints;[20] most do so specifically for low back pain.[20][207] The majority of U.S. chiropractors participate in some form of managed care.[21] Although the majority of U.S. chiropractors view themselves as specialists in neuroleptic malignant syndrome conditions, many also consider chiropractic as a type of primary care.[21] In the majority of cases, the care that chiropractors and physicians provide divides the market, however for some, their care is complementary.[21]
There is a wide range of ways to measure treatment outcomes.[91] Chiropractic care, like all medical treatment, benefits from the placebo response.[92] It is difficult to construct a trustworthy placebo for clinical trials of spinal manipulative therapy (SMT), as experts often disagree about whether a proposed placebo actually has no effect.[93] The efficacy of maintenance care in chiropractic is unknown.[12]
All treatment is based on an accurate diagnosis of your back pain. The chiropractor should be well informed regarding your medical history, including ongoing medical conditions, current medications, traumatic/surgical history, and lifestyle factors. Although rare, there have been cases in which treatment worsened a herniated or slipped disc, or neck manipulation resulted spinal cord injury. To be safe, always check with your medical doctor to make sure your condition will benefit from chiropractic or other pain relief alternatives. 
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