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Objective: To analyze cervical artificial disc in the cervical spine in patients with the clinical effect and its impact on cervical lordosis, cervical spine and adjacent intervertebral impact evaluation of cervical spondylosis cervical artificial disc in the long-term clinical efficacy of clinical treatment method selection . Methods: The study was conducted in our department from 2005-2007 artificial cervical disc replacement in 44 patients, preoperative patients were diagnosed as cervical spondylosis, fit and require artificial cervical disc replacement surgery, in which a single segment substitution lines and were followed up to 2 more than 11 years, respectively, in the preoperative and postoperative January, March, June, December, 24 months of its clinical efficacy and radiological results were followed up. Clinical results from the JOA score, VAS, NDI and Odsm comprehensive evaluation criteria. Follow-up imaging were performed cervical spine radiographs, dynamic radiographs and CT, MRI follow-up, the measurement of cervical replacement segment, near the upper and lower segments, cervical flexion and extension of the scope of activities and the FSU (ROM), and cervical lordosis, FSU angle to determine cervical artificial disc of the cervical spine mechanics of biological motion, and according to the results of CT and MRI evaluation of prostheses, spinal nerves and adjacent disc degeneration. According to the length of time will follow up results into recent results ( 12). RESULTS: Patients JOA score, VAS, NDI patients showed significant improvement compared with the preoperative, the difference was statistically significant, and with the follow-up time, better clinical effect than before. Activity of the cervical spine surgery segment activity, FSU activity and activity of adjacent segments in the early follow-up results smaller than before surgery, the difference was statistically significant, while the late follow-up results compared with the preoperative changed little, the difference was not statistically significant. However, compared with the preoperative postoperative lordosis lordosis angle increased significantly, and with the follow-up time increases, the more nearly normal lordosis curvature, and the difference was statistically significant. No prosthesis-related complications, and two years CT, MRI results showed no prosthesis displacement, without re-compression of spinal cord and nerve roots, no obvious adjacent segment disc degeneration, no translocation ossification . Conclusion: artificial cervical disc replacement patients have a good clinical results, while maintaining the replacement segment motor function and stability of the cervical spine, intervertebral adjacent segment activity and FSU activity and help restore normal cervical lordosis . Cervical artificial disc replacement surgery to get a good short-term clinical efficacy, and because maintaining the normal biological motion mechanics, can avoid or prevent the degeneration of adjacent segments are expected to have good long-term efficacy. 2-year follow-up with good results, still need longer follow-up.
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