后路椎间盘镜与椎板开窗减压治疗单节段LDH的疗效观察

目的 探讨后路椎间盘镜髓核摘除术(MED)与传统椎板开窗髓核摘除术(FD)治疗腰椎间盘突出症(LDH)的临床疗效.方法 将2009年4月至2012年1月于该院接受手术治疗的168例单节段LDH患者按手术方式分为MED组(81例)和FD组(87例),比较两组患者手术相关指标.术后定期随访,采用视觉疼痛模拟评分(VAS)、JOA评分和Oswestry功能障碍指数(ODD评价患者手术疗效.末次随访时通过测量患者腰椎曲度、椎间隙高度、椎间水平位移和角位移评估患者腰椎稳定性.结果 MED组患者切口长度、术中出血量、手术时间、住院时间均低于FD组(P＜0.05).所有患者均完成4年以上随访,末次随访时两组患者各项评分较术前均明显改善(P＜0.05),组间比较差异均无统计学意义(P＞0.05).两组患者椎间隙高度较术前均明显降低,FD组术后腰椎曲度较MED组明显减小,MED、FD组分别有1、3例患者出现腰椎失稳.结论 MED与FD治疗单节段LDH均可取得良好的临床疗效,MED手术时间短、创伤小、对腰椎稳定性影响小,是理想的微创手术.

Effective observation on microendoscopic discectomy and fenestration discectomy for treating single segment lumbar disc herniation

Objective To investigate the clinical efficacy of microendoscopic discectomy(MED) and fanestration discectomy (FD) for treating single segement lumbar disc herniation(LDH).Methods A total of 168 patients with single segment LDH were included in this retrospective study from April 2009 to Janurary 2012.The patients were divided into MED group(81 cases) and FD group(87 cases) according to surgery mode.The operation and hospitalization indexes for each group were collected and compared respectively.The clinical outcomes were evaluated by the visual analogue scale(VAS),Japanese Orthopedic Association(JOA) scores and Oswestry Disability Index(ODD.Lumbar curves(Cobb's angle),intervertebral space height,horizontal displacement and angular displacement before and after surgery were applied to evaluate the lumbar spinal stability.Results The skin incision length,amount of intraoperative blood loss,operation time and hospitalization duration in the MED group were less than that in the FD group(P＜0.05).All cases completed follow up for more than 4 years.The each item score at last follow up in the two groups was significantly improved compared with before operation(P＜0.05),the inter-group comparison had no statistical difference(P＞0.05).The postoperative lumbar curve and intervertebral space height were decreased in both groups.The postoperative lumbar curve in the FD group was decreased compared with the MED.One case in the MED group and 3 cases in the FD group appeared lumbar vertebral instability.Conclusion Both MED and FD for treating single segment LDH can gain better clinical effect,MED has short operation time,small trauma and little influence on lumbar vertebral stability,and is an effective minimal invasive surgery.