Related Experiment Video
Updated: Jul 4, 2026

Development of a Uterosacral Ligament Suspension Rat Model
Published on: August 17, 2022
[Are sacrospinal and sacrotuberal ligaments involved in sacro-iliac joint stability?]
J-M Philippeau1, O Hamel, J Pecot
1Service de Chirurgie Orthopédique et Traumatologique, CHU de Nantes, Nantes, France. jmphilippeau@hotmail.com
Objectives:
Surgery of pudendal nerve entrapment needs the section of both sacrospinal and sacrotuberal ligaments. We asked about the potential side effect of such a section especially on sacro-iliac joint stability.
Material And Methods:
We performed a cadaveric anatomical and biomechanical study concerning six sacro-iliac joints. Joints were tested on a plateform, and results were analysed with a logiciel (Medai((R))), both especially developped for, before and after sacrospinal and sacrotuberal section.
Results:
The computered analysis of our results proved that sacro-iliac joint has a significant range of motion, specially in youngs. Results obtained confirmed that there is no statistical difference (p<0.05) between the mobility of sacro-iliac joint with or without sacrospinal and sacrotuberal ligaments.
Conclusion:
This original experimental biomechanical study is the first able to test the influence or sacrospinal and sacrotuberal section on sacro-iliac joint stability. The section of those ligaments has no significant experimental consequence on the sacro-iliac joint stability and cannot create a postoperative instability.
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