前路颈椎桥形锁定融合器在颈椎间盘切除融合术治疗退变性颈椎病中的应用

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Abstract Objective To evaluate the clinical efficacy of ROI-C in the treatment of degenerative cervical spondylosis with anterior cervical discectomy and fusion.Methods A retrospective analysis from October 2013 to September 2016，104 patients underwent degenerative cervical spondylosis anterior intervertebral decompression and ROI-C interbody fusion，with 108 ROI-C implanted.There were 40 cases of nerve root type cervical spondylosis and 64 cases of cervical spondylotic myelopathy.X-rays or CT were perfomed 3 days，3 months，6 months and 12 months after operation.Neural function and pain were evaluated at the end of the follow-up with the JOA and VAS score to observe the operation time，intraoperative blood loss and complications.Intervertebral height changes and intervertebral fusion were evaluated according to the final follow-up cervical X or CT.Results 104 cases were followed up for (18.41±7.39)months (ranging from 8 to 30 months).The operation time was (51.30±2.17)min in single segment procedures and (105.53±7.14)min two segment procedures；the average operative bleeding was (43.72±2.63)mL in single segment procedures and (71.57±4.20)mL in two segment procedures.In nerve root type cervical spondylosis patients，JOA and VAS score，vertebral height improved significantly from preoperative (14.53±1.02)，(7.70±1.60) and (3.94±0.78)mm to postoperative (16.79±0.95)，(2.36±0.90) and (6.76±1.11)mm (P＝0.001) at the end of follow-up.In cervical spondylotic myelopathy patients，JOA and VAS score，vertebral height improved significantly from preoperative (10.18±1.62)，(3.53±1.46) and (3.71±0.80)mm to postoperative (14.21±1.82)，(1.44±0.79) and (6.50±1.13)mm (P＝0.001)：at the end of follow-up.The average time of fusison in single segment group was (4.20±1.53)months，(5.41±6.15)months in two segment group，and 7 months in 3 segment group.No complications were observed in all the cases such as spinal cord injury，dysphagia，hoarseness and ROI-C shifting or sinking.Conclusion In the treatment of degenerative cervical spondylosis，ACDF with ROI-C can effectively reconstruct the intervertebral height，obtaining reliable cervical intervertebral stability and fusion rate，as for shorter operative time，less bleeding，less postoperative complications and improving the neurological function and postoperative pain significantly，so ACDF using ROI-C alone in treatment of cervical spondylosis is safe，effective，and clinical effect satisfactory.

Key words： anterior cervical bridge locking fusion cage cervical spondylosis interbody fusion anterior cervical discectomy and fusion

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