Zero-P椎间融合器的早期临床疗效

目的：研究Zero-P椎间融合器在颈椎前路减压椎体间融合（ACDF）术后的早期临床疗效。方法：选取颈椎疾病患者31例,均行ACDF术,共置入Zero-P椎间融合器31枚,融合节段均为单节段。术后定期摄X线片检查,采用日本骨科学会（JOA）评分,神经功能改善率（RIS）评价患者术前、术后颈脊髓神经功能。结果：31例患者均获12个月以上随访,平均14.70个月,手术时间（72±10）min,术中出血量（60±12）mL;1例患者术后24 h内出现咽部疼痛,经对症治疗,术后7 d内症状消失;术后3个月X线片提示颈椎椎间隙骨性融合,术前JOA评分（8.65±1.85）分,术后末次随访时为（16.09±0.91）分,差异有统计学意义（P〈0.05）;术后6个月神经功能改善率为（89.60±9.45）%,与术后12个月的（90.30±8.94）%比较,差异无统计学意义（P〉0.05）;术后椎间高度、生理弧度恢复满意。结论：Zero-P椎间融合器应用于颈前路减压植骨融合治疗颈椎疾病的早期随访疗效满意。

Early Clinical Efficacy of Zero-Profile Interbody Fusion

Objective：To research the early clinical efficacy of a Zero-Profile interbody fusion after anterior cervical decompression and fusion（ACDF） with internal fixation.Method：31 patients with cervical disorders were selected.All patients underwent ACDF with Zero-Profile Implant,31 cages were implanted,all were single segment.X-ray was taken conventionally after operation.The neurofunction follow-up was estimated by Japanese Orthopaedic Association and rate of the improved JOA score.Result：All of the patients were followed up above 12 months,arerage of 14.7 months,the operation was spent（72±10） min in patients,whose blood loss（60±12） mL.1 patient felt pharyngeal pain in 24 hours after operation,this symptom cured in 7 days after corresponding therapy.All patients had the evidence of bridging trabecular bone with the fusion area after 3 months.Significant difference was evaluated on JOA score between preoperation（8.65±1.85） and final follow-up（16.09±0.91）（P〈0.05）,the RIS after 6 months post operation was（89.60±9.45）% and compared with after 12 months post operation（90.30±8.94）%,there was no difference（P〉0.05）.The interbody height and physiological curvature were recovered satisfactorily.Conclusion：The early clinical efficacy for Zero-Profile interbody fusion applied to anterior cervical decompression and fusion is satisfactory.