In the three surgical models with titanium plate fixation (mACDF, ACCF, and HDF), the ACCF group had the highest stress at the titanium plate-screw interface, while the mACDF group had the lowest stress. In all models, the mACDF-CA group had the lowest stress on the intervertebral disc, while the ACCF group had the highest stress. Stress on the intervertebral discs at adjacent segments was higher for the upper C2/3 than the lower C6/7 intervertebral disc. Of the four models, stress on the upper (C2/3) adjacent intervertebral disc was the lowest in the mACDF-CA group and highest in the ACCF group. Biomechanical characteristics on the plate and the disc of adjacent levels (C2/3, C6/7) were comparatively analyzed. Four additional models were developed from the fusion model, including multilevel anterior cervical discectomy and fusion (mACDF), anterior cervical corpectomy and fusion (ACCF), hybrid decompression and fusion (HDF), and mACDF with cage alone (mACDF-CA). MethodsĪn intact C2-C7 cervical spine model was developed and validated. The purpose of this study is to compare the biomechanical characteristics of the intervertebral discs at the adjacent segments and internal fixation, and to provide scientific experimental evidence for surgical treatment of MCSM. If your symptoms don't begin to improve after several weeks of treatments, chiropractic adjustment might not be the best option for you.The decision to treat multilevel cervical spondylotic myelopathy (MCSM) remains controversial. A lot depends on your particular situation. Not everyone responds to chiropractic adjustments. Some studies suggest that spinal manipulation may also be effective for headaches and other spine-related conditions, such as neck pain. ResultsĬhiropractic adjustment can be effective in treating low back pain, although much of the research done shows only a modest benefit - similar to the results of more-conventional treatments. These may include headaches, fatigue or pain in the parts of the body that were treated. Some people experience minor side effects for a few days after chiropractic adjustment. You may hear popping or cracking sounds as your chiropractor moves your joints during the treatment session. The chiropractor uses his or her hands to apply a controlled, sudden force to a joint, pushing it beyond its usual range of motion. Often, you're positioned lying facedown on a specially designed, padded chiropractic table. During the procedureĭuring a typical chiropractic adjustment, your chiropractor places you in specific positions to treat affected areas. Your chiropractor may also recommend other examinations or tests, such as X-rays. What you can expectĪt your initial visit, your chiropractor will ask questions about your health history and perform a physical exam, with particular attention to your spine. No special preparation is required before a chiropractic adjustment. A known bone abnormality in the upper neck.Numbness, tingling, or loss of strength in an arm or leg.A certain type of stroke after neck manipulationĭon't seek chiropractic adjustment if you have:.Compression of nerves in the lower spinal column.A herniated disk or a worsening of an existing disk herniation.Serious complications associated with chiropractic adjustment are overall rare, but may include: Chiropractic adjustment is safe when it's performed by someone trained and licensed to deliver chiropractic care.
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