The role of the facet capsular ligament in providing spinal stability

Research output: Contribution to journalArticle

Abstract

Low back pain (LBP) is the most common type of pain in America, and spinal instability is a primary cause. The facet capsular ligament (FCL) encloses the articulating joints of the spine and is of particular interest due to its high innervation–as instability ensues, high stretch values likely are a cause of this pain. Therefore, this work investigated the FCL's role in providing stability to the lumbar spine. A previously validated finite element model of the L4-L5 spinal motion segment was used to simulate pure moment bending in multiple planes. FCL failure was simulated and the following outcome measures were calculated: helical axes of motion, range of motion (ROM), bending stiffness, facet joint space, and FCL stretch. ROM increased, bending stiffness decreased, and altered helical axis patterns were observed with the removal of the FCL. Additionally, a large increase in FCL stretch was measured with diminished FCL mechanical competency, providing support that the FCL plays an important role in spinal stability.

Original languageEnglish (US)
Pages (from-to)712-721
Number of pages10
JournalComputer Methods in Biomechanics and Biomedical Engineering
Volume21
Issue number13
DOIs
StatePublished - Oct 3 2018

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Ligaments
Stiffness
Bending moments

Keywords

  • coupled motion
  • facet joint
  • finite element model
  • instability
  • lumbar spine

PubMed: MeSH publication types

  • Journal Article

Cite this

The role of the facet capsular ligament in providing spinal stability. / Bermel, Emily A.; Barocas, Victor H; Ellingson, Arin M.

In: Computer Methods in Biomechanics and Biomedical Engineering, Vol. 21, No. 13, 03.10.2018, p. 712-721.

Research output: Contribution to journalArticle

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