The Discuss Of Clinical Studies And Efficacy Of Imaging Changes Made By The Treatment Of Severe Multiple Segments Cervical Myelopathy In The Posterior Lateral Mass Screw Decompression Surgery

Objective: By comparing posterior decompression lateral mass screwfixation surgery postoperative radiographic and clinical indicators of in thetreatment of severe Multiple Segments cervical myelopathy patients, discussespostoperative results, and provide a reference surgical strategy.Methods: A retrospective analysis of January2009to October2013,select37cases Patients who have accepted posterior decompression lateralmass screw fixation surgery.23males and14females, Age46-72years old,The mean age (61.05±2.56) years old. All patients were followed up1week,3months,6months,12months After surgery. Cervical lateral X-ray film andCT scan+check-dimensional reconstruction. Three months after do the MRIReview. Inter-body height is the distance from the midpoint of the bottomvertebral endplate to the midpoint of the top vertebral endplate of surgerystage. Cervical MRI contrast before and after surgery, Observing cervicalSpinal stenosis and spinal cord compression. The JOA(Japanese OrthopaedicAssociation) scoring system, Neck Disability Index (NDI) and VisualAnalogue Scale VAS score were applied to evaluate the neurological functionand axial neck/shoulder pain before and after surgery, respectively.Results: The mean operative time of37patients is148.31±54.17min. Allpatients were treated with anesthesia. The average Intraoperative blood loss is356.74±175.26ml. Last follow-up JOA score was14.01±1.91points, comp-ared with preoperative7.89±2.32points significantly improved. JOA scoreimprovement rate show: good rate91.89%. NDI score after the last follow-upwas3.28±0.97points, compared with the preoperative17.90±7.49points, NDIscore is Decreased significantly. VAS score results obtained similar results with NDI. Last follow-up between the vertebral height5.95±1.24mm, comp-ared with the preoperative inter-body height5.94±1.43mm, The differencewas not statistically significant(P＞0.05). At last follow CCI is9.91%±4.54%,compared with preoperative8.59%±8.11%, The difference was not statis-tically significant (P>0.05). No patient experienced spinal cord injury, palsy ofthe C5nerve root, For Lateral mass screw fixation system, loosening did notoccur.Conclusion: posterior decompression lateral mass screw fixation for thetreatment of severe multi-segmental cervical myelopathy, Maintain theoriginal cervical curvature and intervertebral height, Complete decompression,That minimizes the risk of surgery, reducing the incidence of postoperativecomplications. Can effectively improve neurological function, decrease theincidences of axial symptoms and C5nerve root palsy. For patients withcervical myelopathy who Loss the chance of anterior cervical surgery,posterior decompression lateral mass screw fixation Is a good treatment.