Torsional stability of the lumbosacral junction: Significance of the iliolumbar ligament

Hung Kay Daniel CHOW, Keith D. K. LUK, John C. Y. LEONG, C. W. WOO

Research output: Contribution to journalArticles

40 Citations (Scopus)

Abstract

Previous study has shown that the Iliolumbar ligament is important in restraining flexion, extension, and lateral bending of L5 on S1, and its effect on axial rotation was not apparent at 6 N-m of loading. An apparatus was devised to further evaluate its role in relation to the torsional stability of the lumbosacral junction. Torque-rotatlon characteristics were studied with 24 cadaveric lumbosacral-pelvic specimens. The specimens were divided into three groups. In Group A, the “facet Joints,” lumbosacral disc and the iliolumbar ligament were all intact. In Group B, the “facet joints” were removed, and in Group C, both the “facets” and the iliolumbar ligament were removed. The results indicated that the ligament was Important in maintaining torsional stability of the lumbosacral junction and contributed to 35.2% of the normalized elastic strain energy of the junction. Copyright © 1989 Lippincott-Raven Publishers.

Original languageEnglish
Pages (from-to)611-615
JournalSpine
Volume14
Issue number6
DOIs
Publication statusPublished - Jun 1989

Citation

Chow, D. H. K., Luk, K. D. K., Leong, J. C. Y., & Woo, C. W. (1989). Torsional stability of the lumbosacral junction: Significance of the iliolumbar ligament. Spine, 14(6), 611-615. doi: 10.1097/00007632-198906000-00013

Keywords

  • Iliolumbar ligament
  • Lumbar stability
  • Torsion tests
  • Cadaver specimen
  • Human

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