Abstract: Abstract Objective：To study the effect of anterior cervical corpectomy and fusion with preserved posterior vertebral wall for cervical spondylotic myelopathy ,and to compare the results of anterior cervical corpectomy and fusion with preserved posterior vertebral wall with the classical anterior cervical corpectomy with fusion．Methods：From August 2007 to September 2009, 40 cases of CSM were randomized to undergo anterior cervical corpectomy with fusion (n = 20) or anterior cervical corpectomy and fusion with preserved posterior vertebral wall (n = 20). Operation time, blood loss, the numbers and types of complications, and preoperative and postoperative JOA scores were recorded. fusion rate, segmental lordosis, and disc height were assessed by roentgenography. Results:Average operation time and blood loss decreased significantly in the anterior cervical corpectomy and fusion with preserved posterior vertebral wall group. Improvement in segmental lordosis and disc height were similar in both groups .Both fusion rate after 2 processes reached 100％at 3 months posteratively. Conclusion: Anterior cervical corpectomy and fusion with preserved posterior vertebral wall is a feasible procedure for anterior decompression and fusion, with shorter operation time, less bleeding. And there is smaller structural damage to the cervical vertebrae.

Key words: cervical spondylosis, vertebroplasty, spinal cord, decompression, surgical, diskectomy