CAJ | 학술논문

目的探讨后路腰椎间融合单侧内固定术的生物力学特点.方法采用15具新鲜小牛脊柱标本,分为正常组、L5S1滑脱的滑脱组、LSS1滑脱使用后路腰椎间融合单侧内固定术的实验组,测试各组的生物力学特性.结果经采用后路腰椎间融合单侧内固定术后,在轴向压缩、前屈、后伸、侧弯工况下,实验组平均轴向刚度、水平剪切刚度、扭转强度和扭转刚度均较滑脱组增加,其数值与正常组差异无统计学意义(均P＞0.05),与滑脱组差异有统计学意义(P＜0.01,P＜0.05).结论采用后路腰椎间融合单侧内固定术后,在轴向压缩、前屈、后伸、侧弯工况下,腰椎的轴向刚度、水平剪切刚度、扭转强度和扭转刚度较滑脱时明显提高,能够达到腰椎生理正常状态,满足对手术固定后即刻稳定性的需要.
목적 탐토후로요추간융합단측내고정술적생물역학특점.방법 채용15구신선소우척주표본,분위정상조、L5S1활탈적활탈조、LSS1활탈사용후로요추간융합단측내고정술적실험조,측시각조적생물역학특성.결과 경채용후로요추간융합단측내고정술후,재축향압축、전굴、후신、측만공황하,실험조평균축향강도、수평전절강도、뉴전강도화뉴전강도균교활탈조증가,기수치여정상조차이무통계학의의(균P＞0.05),여활탈조차이유통계학의의(P＜0.01,P＜0.05).결론 채용후로요추간융합단측내고정술후,재축향압축、전굴、후신、측만공황하,요추적축향강도、수평전절강도、뉴전강도화뉴전강도교활탈시명현제고,능구체도요추생리정상상태,만족대수술고정후즉각은정성적수요.
Objective To study the biomechanics of posterior lumbar interbody fusion with unilateral fixation.Methods 15 bovine lumbers were divided into three groups(intact group,spondylolisthesis group,posterior lumbar interbody fusion with unilateral fixation group as experimental group).Nondestructive tests were performed in pure compression,flexion,extension,and lateral bending on every group.Results Compared with intact group and spondylolisthesis group,after posterior lumbar interbody fusion with unilateral fixation,the mean straining of vertebral body in experimental group increased.The value of experimental group had significant difference from spondylolisthesis group(P ＜ 0.01,P ＜0.05).And the value of experimental group was proximal to intact group (P ＞ 0.05).Conclusion After operation with posterior lumbar interbody fusion with unilateral fixation,the stiffness of vertebral body was approached the intact group during axis compression,flexion,extension and lateral bending.And the initial stability was enough after operation.