Attached to the back of each vertebral body is an arch of bone that forms a continuous hollow longitudinal space, which runs the whole length of the back. This space, called the spinal canal, is the area through which the spinal cord and nerve bundles pass. The spinal cord is bathed in cerebrospinal fluid (CSF) and surrounded by three protective layers called the meninges (dura, arachnoid and pia mater).
They are mostly good for corroborating what is already obviously a serious problem — for instance, if you already have other red flags and ominous symptoms and there are MRI findings of degeneration that might explain those symptoms. But of course in such case you will already know that you have a big problem! The scan is just clarifying why. Maybe. BACK TO TEXT
Like their MD colleagues, doctors of chiropractic are subject to the boundaries established in state practice acts and are regulated by state licensing boards. Further, their education in four-year doctoral graduate school programs is nationally accredited through an agency that operates under the auspices of the U.S. Department of Education. After graduation, they must pass national board exams before obtaining a license to practice, and then must maintain their license annually by earning continuing education (CE) credits through state-approved CE programs.  
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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