Application of ROI-C self-locking fusion cage in anterior decompression and fusion for cervical spondylotic myelopathy / 中华骨科杂志

ABSTRACT

Objective To compare the clinical effects of ROI-C self-locking fusion cage and common cage+titanium plate fixation on treatment of multi-segment anterior decompression and fusion for cervical spondylotic myelopathy.Methods From March 2010 to September 2013,92 patients with multi-segment cervical spondylotic myelopathy were treated with anterior decompression and fusion.52 patients were treated with common cage plus titanium plate fixation,while 40 patients were treated with ROI-C self-locking fusion cage.Clinic data including clinical preoperative condition,operation time,intraoperative blood loss,intervertebral space height,Cobb angle of cervical spine,bone graft fusion rate,complications,and JOA score and VAS score were compared.Results Follow-up visit was conducted for all cases,with the time of 12-48 months (22 months on the average).The neurologic symptoms of patients in two groups were relieved obviously after postoperative 1 week,including chest and abdomen constriction feeling,finger pain,finger and lower limb activities.Intervertebral space height of cage +titanium plate group and ROI-C fusion cage group increased to 79.06±6.67 mm and 78.80±6.85 mm respectively after postoperative 3 months from preoperative 47.15±6.96 mm and 46.95±7.14 mm;the Cobb angle increased to 9.29°±12.90° and 8.57°±13.00° respectively after postoperative 3 months from preoperative 4.27°±11.15° and 2.80°±10.81°.In ROI-C group,the operation time,intraoperative blood loss and postoperative complications were significantly lower than those in cage+titanium plate group.The differences of two groups have statistical significance.In the last follow-up visit,JOA score of ROI-C group increased to 15.15±0.91 from preoperative 9.32±1.74,with the improvement rate of 75.82％±13.28％;JOA score of cage + titanium plate group increased to 15.29± 1.07 from preoperative 9.11 ± 1.23,with the improvement rate of 77.91％± 14.14％.The differences of two groups in the improvement rate have no statistical significance.Conclusion Curative effects of ROI-C self-locking fusion cage and common cage+titanium plate fixation on treatment of muhi-segment anterior decompression and fusion for cervical spondylotic myelopathy are similar,while ROI-C self-locking fusion cage has such advantages as short operation time,less blood loss,little injury and low complication incidence.