摘要
目的利用有限元方法分析骶髂关节周围各韧带对骶髂关节稳定性的影响。方法建立正常腰椎-骨盆-股骨有限元模型,在该正常模型基础上分别去除双侧骶髂关节各韧带,建立无髂腰韧带模型、无骶髂前韧带模型、无骶髂后韧带模型、无骶结节韧带模型、无骶棘韧带模型和无骶髂骨间韧带模型。在各模型上分别模拟脊柱的生理运动,分析左右骶髂关节活动度(range of motion,ROM)和各关节面的平均应力,并与正常模型进行比较。结果相比正常骶髂关节模型,无骶结节韧带模型、无骶棘韧带模型和无骶髂后韧带模型的左右两侧骶髂关节ROM均无明显差异,而无骨间韧带模型除在脊柱右旋转情况下左侧骶髂关节ROM和后伸情况下右侧骶髂关节ROM无明显差异外,在其他脊柱生理活动下左右两侧骶髂关节ROM均显著增大。无骶髂骨间韧带模型左右两侧骶髂关节在脊柱生理活动下关节面的平均应力均明显降低。结论在所有骶髂关节周围韧带中,骶髂骨间韧带对骶髂关节的稳定性影响最大。研究结果有利于探讨骶髂关节错位的发生机制,为临床骶髂关节错位的治疗提供一定理论依据。
Objective To analyze the influence of ligaments surrounding sacroiliac joints( SIJs) on stability of SIJs by finite element method. Methods The finite element lumbar spine-pelvis-femur model was established. Based on this normal model,all SIJ ligaments in both sides were removed in turn,to establish models without iliolumbar ligaments,sacroiliac anterior ligaments,sacroiliac posterior ligament,sacrotuberous ligaments,sacrospinous ligaments,sacroiliac interosseous ligaments,respectively. The models were used to simulate physiological motions of the spine. The range of motion( ROM) and average stress on the left and right SIJs were analyzed and compared with the normal models. Results Compared with the normal SIJ model,no significant differences in the ROM of bilateral SIJs were found in the models without sacrotuberous ligaments,sacrospinous ligaments and sacroiliac posterior ligaments;for the model without acroiliacinterosseous ligaments,there was no significant difference in the ROM of the left SIJs under spinal right rotation and ROM of the right SIJs under spinal extension,but the ROM of bilateral SIJs increased significantly under the other spinal physiological activities. Under the physiological activities of the spine,the average stress of the SIJ surface in the left and right sides of the model without acroiliacinterosseous ligaments significantly decreased. Conclusions Of all the sacroiliac ligaments,the sacroiliac interosseous ligaments showed the maximum influences on the stability of SIJs. The research findings are helpful to investigate the mechanism of SIJ subluxation and provide certain theoretical basis for clinical treatment of SIJ subluxation.
作者
张少群
任茹霞
陈奕历
冯梓誉
李义凯
ZHANG Shaoqun;REN Ruxia;CHEN Yili;FENG Ziyu;LI Yikai(College of Traditional Chinese Medicine,Southern Medical University,Guangzhou 510515,China;Department of Pharmacy,the Seventh Affiliated Hospital,Sun Yat-sen Universtiy,Shenzhen 518107,Guangdong,China)
出处
《医用生物力学》
EI
CAS
CSCD
北大核心
2019年第5期500-506,共7页
Journal of Medical Biomechanics
基金
国家自然科学基金项目(81674095)
关键词
骶髂关节
韧带
应力
活动度
有限元分析
sacroiliac joint
ligament
stress
range of motion(ROM)
finite element analysis
