中国医药科学2024，Vol.14Issue(10)：170-174,5.DOI:10.20116/j.issn2095-0616.2024.10.41
下腰椎椎体在不同负荷下屈伸运动特点的分析
Analysis of flexion and extension motion characteristics of lower lumbar vertebral body under different loads
摘要
Abstract
Objective To explore the trajectory of body motion during flexion and extension of L3 and L4 vertebrae in an upright position under different loads,and to analyze the laws and characteristics of in vivo motion of lumbar vertebrae under loads.Methods From August 2018 to August 2020,10 asymptomatic young volunteers were recruited,and the images of L3-S1 were obtained by plain CT using the matching technology of dual fluoroscopy system DFIS and CT for three-dimensional reconstruction.X-ray images were obtained by performing flexion-upright-extension motions of the lower lumbar spine under different loads of 0,5 and 10 kg in radiographic perspective,and two-dimensional to three-dimensional images were matched through contour overlapping to restore the three-dimensional motion trajectory of the lower lumbar vertebral body.Results When the lower lumbar vertebrae are bent forward to a standing position,the X-axis displacement of the lumbar vertebrae at 0,5,and 10 kg under different loads is-1.05(-2.42,1.72),0.63(0.15,4.26),-0.39(-0.75,3.12)mm,and the X-axis displacement is 5 kg>10 kg>0 kg,with statistical significance difference(P<0.05).The γ angles are-0.26(-1.30,5.43),0.93(0.24,5.42),and-0.95(-2.12,4.32)°,respectively.The difference in γ angle was statistically significant(P<0.05),when compared to 5 kg>0 kg>10 kg.When the lower lumbar vertebrae stand to the extended position,the X-axis displacement of the lumbar vertebrae at 0,5,and 10 kg under different loads is 0.90(-0.82,3.74),-0.91(-1.55,4.26),and 0.07(-0.92,3.25)mm,respectively.The movement displacement of the Z-axis is-0.25(-0.54,1.78),0.40(-0.68,2.37),and-0.19(-0.92,1.03)mm,respectively.The X displacement comparison showed a statistically significant difference of 0 kg>10 kg>5 kg,while the Z displacement comparison showed a difference of 5 kg>10 kg>0kg(P<0.05).The α angles are 0.91(-0.82,2.85),-0.61(-0.14,3.79),and 0.54(-0.82,3.87)degrees,respectively.The γ angles are 1.15(0.24,5.32),0.92(-0.67,5.45),and 0.65(-1.24,5.32)degrees,respectively.The α angle comparison showed a statistically significant difference between 0 kg>10 kg>5 kg,and the γ angle comparison showed a difference of 0 kg>5 kg>10 kg(P<0.05).Conclusion There are statistical differences in the in vivo motion displacement and rotation angle between lumbar vertebral bodies under loads of 5 kg and 0 kg,which may be related to lumbar degenerative diseases.Degenerative diseases of lower lumbar spine may be more closely related to X-axis displacement.关键词
腰椎/在体运动/六个自由度/负重/退行性疾病Key words
Lumbar vertebrae/In vivo motion/Six degrees of freedom/Load/Degenerative disease分类
医药卫生引用本文复制引用
宋阳,苗军,冷辉,张海军,赵磊,赵雪晴..下腰椎椎体在不同负荷下屈伸运动特点的分析[J].中国医药科学,2024,14(10):170-174,5.基金项目
内蒙古医科大学联合项目(YKD2022LH048). （YKD2022LH048）
