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Related Experiment Video

Updated: May 10, 2026

Isolation and Characterization of the Murine Uterosacral Ligaments and Pelvic Floor Organs

Isolation and Characterization of the Murine Uterosacral Ligaments and Pelvic Floor Organs

Published on: March 3, 2023

Ligamentous influence in pelvic load distribution.

Niels Hammer¹, Hanno Steinke, Uwe Lingslebe

¹Faculty of Medicine, Institute of Anatomy, University of Leipzig, Liebigstraße 13, 04103 Leipzig, Germany; Department of Trauma and Reconstructive Surgery, Faculty of Medicine, University of Leipzig, Liebigstraße 13, 04103 Leipzig, Germany.

The Spine Journal : Official Journal of the North American Spine Society

|June 13, 2013

Summary

This summary is machine-generated.

Posterior pelvic ligaments significantly impact pelvic stability, with stiffness influencing motion and strain. Increased stiffness in certain ligaments reduces pelvic motion, particularly during sitting, aligning with low back pain causes.

Keywords:

Biomechanics Finite elements modeling Iliolumbar ligament Sacroiliac joint ligaments Sacrospinous and sacrotuberous ligament

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Development of a Uterosacral Ligament Suspension Rat Model

Development of a Uterosacral Ligament Suspension Rat Model

Published on: August 17, 2022

Area of Science:

Biomechanics
Computational modeling
Anatomy

Background:

The role of posterior pelvic ring ligaments in pelvic stability is not well understood, despite their suspected connection to low back and sacroiliac joint (SIJ) pain.
Previous finite element (FE) models had limitations in accurately representing ligament geometry and material properties, potentially affecting results.

Purpose of the Study:

To investigate the influence of pelvic ligaments on pelvic stability using FE analysis.
To incorporate precise ligament material properties and morphometries into the FE model for enhanced accuracy.

Main Methods:

An FE model of the pelvis was created from CT scans, incorporating the pubic symphysis joint (PSJ) and SIJ.
Ligament data from 55 donors were used, including anterior (ASL), interosseous (ISL), posterior (PSL) sacroiliac ligaments, and others like iliolumbar (IL), inguinal (IN), pubic (PL), sacrospinous (SS), and sacrotuberous (ST) ligaments.
Vertical load was applied, and pelvic motion was analyzed across varying ligament and cartilage stiffness (50%-200%), with ligament strain assessed in standing and sitting positions.

Main Results:

Tensile and compressive stresses were observed at the SIJ and PSJ.
Increased stiffness of SIJ cartilage, ISL, ST+SS, and IL+ASL+PSL generally decreased pelvic motion, with SIJ cartilage and ISL having the most significant impact.
Total ligament strain decreased by 10% when sitting compared to standing, with increased strain noted in the IL, ISL, and PSL.

Conclusions:

Posterior pelvic ring cartilage and ligaments play a significant role in pelvic stability, with effects varying by region and stiffness.
Load concentrations in the iliolumbar (IL), interosseous (ISL), and posterior (PSL) ligaments during sitting correlate with their role in low back pain generation.