The clinical efficacy and safety of anterior discectomy and fusion by using zero-profile anchored spacer(ROI-C)

English Keywords:Cervical spondylosis  Spinal fusion  Protheses and implant  Clinical efficacy

English Abstract:

  【Abstract】 Objectives: To evaluate the efficacy and safety of anterior cervical discectomy and fusion(ACDF) by using zero-profile anchored spacer(ROI-C). Methods: 105 patients(76 males, 29 females, average age 53.64±11.13 years old, ranging from 20 to 77 years old) who underwent ACDF with ROI-C from March 2012 to March 2014 were evaluated in this study. A total of 141 segments was involved, including single level in 76 cases, two levels in 23 cases, three levels in 5 cases, four levels in 1 case. The demographic data, operation time and operative bleeding were observed. VAS, NDI and JOA(17) scores were used to evaluate the pre- and post-operative outcome. The fusion rate, intervertebral space and cervical curvature were also evaluated. Results: 105 patients were followed up average 22.80±7.04 months(ranging from 12 to 36 months). The average operation time was 138.34±38.14 minutes, the average operative bleeding was 40.76±96.72ml. The VAS score was (4.22±0.85) points at preopetation, (1.48±0.62) points 6 months after surgery, and (1.02±0.64) points at the final follow-up. The JOA and NDI scores were (9.84±2.02) and (39.74±3.69) points at preoperation, (14.27±1.81) and (12.71±2.82) points 6 months after surgery, (14.83±1.61) and (10.84±2.14) points at the final follow-up. The cervical curvature was 13.58°±7.51° at preoperation, 18.59°±7.11° 6 months after surgery, and 19.05°±6.95° at the final follow-up. The intervertebral space was 3.19 ±0.41mm at preoperation, 5.03±1.11mm 6 months after surgery, and 4.62±0.88mm at the final follow-up. The fusion rate 6 months after operation was 96.19%. And all the cases got bone fusion in 12 months after surgery. 5 of them had postoperative dysphagia, 8 of them had rustiness, with no other complication. Conclusions: ACDF by using the ROI-C in the treatment of cervical spondylosis has a good clinical efficacy, and complication rate is low.