腰椎峡部裂滑脱相邻节段三维瞬时运动特征的在体研究  

Vertebral three-dimensional motion characteristics of adjacent segments in patients with isthmic spondylolisthesis in vivo

作　　者：胥鸿达 刘佳男[1] 李宏达[2] 魏冬[2] 苗军[1] 夏群[2] XU Hongda;LIU Jianan;LI Hongda;WEI Dong;MIAO Jun;XIA Qun(Department of Spinal Surgery,Tianjin Hospital,Tianjin,300211,P.R.China;Department of Orthopedics,Affiliated Hospital of Logistics University of Chinese People's Armed Police Forces,Tianjin,300162,P.R.China)

机构地区：[1]天津医院脊柱外科,天津300211 [2]武警后勤学院附属医院骨科,天津300162

出　　处：《中国修复重建外科杂志》2018年第12期1560-1566,共7页Chinese Journal of Reparative and Reconstructive Surgery

基　　金：国家自然科学基金资助项目(81472140;81572199)~~

摘　　要：目的探讨有临床症状的腰椎峡部裂滑脱(isthmic spondylolisthesis,IS)患者生理载荷下相邻节段三维瞬时运动特征。方法选取有临床症状需手术治疗的L_4 IS患者14例为研究组;以15名无腰痛症状和脊柱疾病的健康志愿者为对照组。两组受试者性别、年龄、体质量指数、骨密度比较,差异均无统计学意义(P>0.05),具有可比性。采用双X线透视影像系统和螺旋CT检查结合技术,从受试者腰椎薄层CT获取腰椎三维重建模型,匹配到由双X线透视影像系统捕获的不同活动体位时腰椎双斜位X线透视图像上,重现生理载荷下不同活动体位腰椎滑脱节段三维瞬时运动状态。通过在椎体几何中心建立三维坐标系测量相邻节段(L_(3、4)和L_5、S_1)椎体间的活动度和相对位移,并与对照组比较。结果对照组L_(3、4)在前屈-后伸、左旋-右旋和左侧弯-右侧弯时,L_5、S_1在左旋-右旋和左侧弯-右侧弯时,沿主要运动轴(主运动轴)的活动度均较相应耦合运动轴(次运动轴)活动度有增大趋势;但研究组这种趋势消失,主次运动紊乱。L_5、S_1由于椎间小关节方向偏冠状位,前屈-后伸时沿主要运动轴活动度较相应耦合运动轴活动度变小;但研究组这种趋势消失。与对照组相比,研究组L3、 4在前屈-后伸、左侧弯-右侧弯和左旋-右旋时存在位移失稳(P<0.05);研究组L_5、S_1椎体间在前屈-后伸、左旋-右旋和左侧弯-右侧弯时沿x、y、z轴的相对位移与对照组比较,差异均无统计学意义(P>0.05)。结论有临床症状的L_4 IS患者相邻节段主次运动模式紊乱,且相邻头侧椎间运动存在位移失稳,而尾侧椎间运动趋于稳定。Objective To observe vertebral three-dimensional motion characteristics of adjacent segments inpatients with symptomatic L4 isthmic spondylolisthesis (IS). Methods Fourteen symptomatic L4 IS patients whounderwent surgery treatment (trial group) and 15 asymptomatic volunteers without back pain and other lesions of spine(control group) were recruited. There was no significant difference in gender, age, body mass index, and bone mineraldensity between the two groups (P>0.05). The three-dimensional reconstruction model of lumbar spine was acquired fromthe thin slice CT of the lumbar spine of the subjects by combining dual-X-ray fluoroscopy imaging system with spiral CTexamination. The model was matched to the double oblique X-ray fluoroscopy images captured by dual-X-ray fluoroscopyimaging system at different active positions of the lumbar spine to reproduce the three-dimensional instantaneous oflumbar spondylolisthesis at different state of motion. The motion and relative displacement of adjacent segments (L3, 4 andL5, S1) of spondylolisthesis were measured quantitatively by establishing a three-dimensional coordinate system at thegeometric center of the vertebral body. The results were compared with those of the control group. Results When L3, 4 inthe control group were flexed flexion-extension, left-right twisting, and left-right bending, and when L5, S1 in the controlgroup were flexed left-right twisting and left-right bending, the activity along the main axis of motion (main axis ofmotion) tended to increase compared with that along the corresponding coupled axis of motion (secondary axis ofmotion); however, this trend disappeared in the trial group, and the main and secondary movements were disordered.Because of the coronal orientation of the facet joints of L5, S1, the degree of motion along the main axis of motiondecreased during flexion and extension, but this trend disappeared in the trial group. Compared with the control group,L3, 4 in the trial group exhibited displacement instability in flexion-extension

关 键 词：腰椎 峡部裂滑脱 运动学 脊柱手术 

分 类 号：R687.3[医药卫生—骨科学]