低温等离子体消融术对山羊胸椎前路松解的生物力学观察

目的:比较低温等离子体消融术去除胸椎间盘和传统胸椎间盘切除术对山羊胸椎生物力学的影响,评估低温等离子体消融术前路松解的可行性和有效性.方法:将16只2～2.5月龄的健康雌性山羊随机分为低温等离子体消融组(6只)、传统胸椎间盘切除组(6只)、空白对照组(4只,其椎间盘未做任何处理),手术组动物均经前路处理中段6个胸椎间盘(T5～T11),术后处死动物,所有动物均取下完整的T4～T12胸段脊柱标本,应用TMT 858型生物力学试验机测试标本柔韧度和运动范围(ROM),包括中性区(NZ)和弹性区(EZ).结果:松解后脊柱标本的柔韧度和ROM与对照组相比均有显著增加(P<0.05);消融组左、右侧弯和左、右旋转的柔韧度与传统组比较无显著性差异(P>0.05),但前屈、后伸时两组之间有显著性差异(P<0.05);消融组后伸、左侧弯和左、右旋转的ROM与传统组比较无显著性差异(P>0.05).前屈、右侧弯时两组之间有显著性差异(P<0.05);松解组后伸,左、右侧弯和左、右旋转的NZ与对照组比较有显著性差异(P<0.05),而消融组前屈、后伸、左侧弯和左、右旋转的NZ与传统组比较无显著性差异(P>0.05),消融组右侧弯的NZ与传统组比较有显著性差异(P<0.05);消融组后伸、传统组右侧旋转的EZ与对照组比较均有显著性差异(P<0.05),而消融组的EZ与传统组比较无显著性差异(P>0.05).结论:采用低温等离子体消融术去除胸椎间盘可以获得和传统胸椎间盘切除术对胸椎前路松解相似的效果.

Coblation techniques for anterior release of thoracic spine in goats:a biomechanical study

Objective:To evaluate the feasibility and effecacy of coblation techniques for anterior release of thoracic spine in goats and compare the biomechanics between coblation techniques and the traditional dis- cectomy.Method:Sixteen immature female goats(age:ranged from 2 to 2.5 months) were divided randomly into coblation group(n=6),traditional discectomy group(n=6) and control group(n=4) with spine intact.In operated group,T5 to T11 spines were released anteriorly.All goats were killed after operation,after t...