Vibration testing of a fresh-frozen human pelvis: The role of the pelvic ligaments

N. E. Conza, D. J. Rixen, S. Plomp

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

A biodynamic model of the human pelvis is being developed in the frame of a research project on low back pain. In order to validate such model, the dynamic behaviour of the human pelvis needs to be investigated. In this study, a human fresh-frozen specimen comprising the three bones of the pelvic girdle and its ligamentous system has been used to perform vibration testing. In such test the response of the system to vibrations is measured at various points on the structure for frequencies between 10 and 340 Hz. The vibration testing is performed a first time on the specimen with intact ligamentous system. The measurements are taken two more times after subsequent bilateral resection of both the sacrotuberous and the sacrospinous ligaments first, and the iliolumbar ligaments afterwards. A comparison between the system response obtained in the three configurations provides information on the role of the resected ligaments in the dynamics of the system, thus on their relevance in the model. Results indicate that the sacrospinous, the sacrotuberous and the iliolumbar ligaments do not play a role in the pelvis dynamics as measured in this study, and will therefore not be represented in the biodynamic model.

Original languageEnglish
Pages (from-to)1599-1605
Number of pages7
JournalJournal of Biomechanics
Volume40
Issue number7
DOIs
StatePublished - 2007
Externally publishedYes

Keywords

  • Experimental modal analysis
  • Pelvic ligaments
  • Vibration testing

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