下肢过度伸展手法对骶髂关节生物力学影响的有限元分析

Finite element analysis of the biomechanical effects of manipulation of lower limb hyperextension on the sacroiliac joint.

作者信息

Luo Bangmin, Li Yikai, Wang Cheng, Xu Zhun

机构信息

Department of Spine Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, China.

School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China.

出版信息

Front Bioeng Biotechnol. 2025 Mar 27;13:1533585. doi: 10.3389/fbioe.2025.1533585. eCollection 2025.

OBJECTIVE

The objective of this study was to explore the effects of four Manipulations of lower limb hyperextension (MLLHs) on the sacroiliac joint (SIJ) and surrounding ligaments.

METHODS

A three-dimensional finite element model of the pelvis was built. Four MLLHs were simulated. The stresses on the pelvis and SIJ were calculated. The SIJ displacements and ligament strains were analyzed.

RESULTS

Under MLLH-F1, -F2, -F3 and -F4, the maximum stresses on the pelvis were 49.2, 50.5, 48.6 and 54.0 MPa, and the maximum stresses on the left SIJ were 3.1, 3.2, 3.0 and 3.4 MPa, respectively. The total SIJ displacements were 0.129, 0.164, 0.080 and 0.154 mm under MLLH-F1, -F2, -F3 and -F4, respectively. The four MLLHs all caused different degrees of ligament strain, MLLH-F2 the greatest.

CONCLUSION

MLLH-F2 and -F4 caused greater stresses on the pelvis and the SIJ surface. The four MLLHs all produced small SIJ displacements. MLLH-F2 produced the largest SIJ displacement and the greatest ligament strain. These findings can guide the choice of therapy.

目的

本研究旨在探讨四种下肢过伸手法（MLLH）对骶髂关节（SIJ）及周围韧带的影响。

方法

构建骨盆的三维有限元模型。模拟四种MLLH。计算骨盆和SIJ上的应力。分析SIJ位移和韧带应变。

结果

在MLLH-F1、-F2、-F3和-F4作用下，骨盆上的最大应力分别为49.2、50.5、48.6和54.0兆帕，左侧SIJ上的最大应力分别为3.1、3.2、3.0和3.4兆帕。在MLLH-F1、-F2、-F3和-F4作用下，SIJ的总位移分别为0.129、0.164、0.080和0.154毫米。四种MLLH均引起不同程度的韧带应变，其中MLLH-F2引起的应变最大。