后路局限性减压Wallis棘突间动态固定治疗腰椎管狭窄症的早期临床观察

目的:探讨后路局限性减压Wallis棘突间稳定系统动态固定治疗腰椎管狭窄症的早期临床效果。方法:2007年3月～2009年3月,28例腰椎管狭窄症患者在我院行后路局限性椎管减压、棘突间置入Wallis稳定系统动态固定治疗。男13例,女15例;年龄48～67岁,平均59岁。病变节段:L4/5 18例,L3/4 5例,L4/5和L3/4双节段5例。术前、术后3d、术后6个月与末次随访时进行VAS评分,并在X线片上测量手术节段椎间隙与椎间孔高度。记录所有患者术中、术后手术相关并发症。结果:23例单节段、5例双节段置入Wallis棘突间稳定系统,手术时间35～80min,平均45min;术中出血50～180ml,平均80ml。术中未发生手术相关并发症。2例失访,26例获得12～32个月随访,平均随访22个月,术后3d、6个月及末次随访时手术节段椎间隙及椎间孔高度与术前相比无统计学差异(P>0.05)。所有患者术后症状明显改善,术后3d、6个月及末次随访时VAS评分与术前比较均有统计学差异(P<0.01)。未发现假体移位等并发症,随访期间所有患者未出现节段不稳或邻近节段退行性改变。结论:后路局限性椎管减压后应用Wallis棘突间稳定系统动态固定治疗腰椎管狭窄症短期效果满意。

Preliminary clinical result of posterior limited decompression and Wallis interspinous dynamic stabilization for lumbar spinal stenosis

Objective:To explore the preliminary result of local limited decompression and Wallis interspinous dynamic stabilization for lumbar spinal stenosis.Method:From March 2007 to March 2009,28 patients with spinal stenosis underwent local limited decompression and implantation of Wallis interspinous stabilization systems.There were 13 males,15 females with an average age of 59 years(range,48 to 67 years).The involved segments included:18 cases at L4/5,5 cases at L3/4,and 5 cases at both L4/5 and L3/4.VAS score w...