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Cervical Ossification of Posterior Longitudinal Ligament Treated by Expansive Open Door Laminoplasty

LIU Zhongjun, DANG Gengting, CAI Qinlin. Department of Orthopedics, The Third Teaching Hospital, Beijing Medical University, Beijing 100083  
Objective To discuss suitable surgical approaches and techniques for treating the ossification of posterior longitudinal ligament (OPLL) of cervical spine. Methods 302 cases with OPLL treated by expansive open door laminoplasty were reviewed and analysed. Some relevant imaging examination data, which were taken pre or post operatively, including plain X-ray film, CT scan and MRI were compared. Results The neurological function score of 302 cases increased obviously after operation and the mean rate of improvement of 46%was obtained 2-3 weeks after surgery and a mean rate of improvement of 68%was found at 1-9 years later. Plain X-ray film showed the increase of sagittal diameter of cervical spinal canal and CT scan showed the enlargement of cervical spinal canal while MRI showed the backward movement and decompression of spinal cord. Conclusion Both enlargement of cervical spinal canal and decompression of spinal cord can be obtained by expansive open door laminoplasty. Clinical result was satisfactory following the above mentioned procedure.
【CateGory Index】: R687.4
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