Biomechanics of the Intervertebral Disc and Why Do Discs Displace?

Smolders, Lucas A.; Forterre, Franck

doi:10.1002/9781118940372.ch2

Cited by 1 publication

(6 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thoracolumbar IVDE occurs more commonly in high‐stress regions along the vertebral column, such as the thoracolumbar junction. It has therefore been suggested that the biomechanical forces acting on the caudal thoracic and cranial lumbar intervertebral discs contribute to the high prevalence of IVDE in this anatomical region 2,5,13,19 . It seems reasonable to expect that the biomechanical properties of the thoracolumbar junction are influenced by the length of the rigid thoracic vertebral column relative to the length of the more mobile lumbar vertebral column.…”

Section: Discussionmentioning

confidence: 99%

“…Intervertebral disc extrusion (IVDE) is the most common spinal condition in dogs 1 . It is characterised by extrusion of calcified and dehydrated nucleus pulposus through the ruptured annulus fibrosus into the vertebral canal 2–4 . Although every dog breed can be affected, dachshunds and miniature dachshunds in particular are overrepresented in several studies 5–9 .…”

Section: Introductionmentioning

confidence: 99%

“…This ratio is of potential interest because most IVDEs in chondrodystrophic dogs occur around the thoracolumbar junction between T11 and L2 5 . This suggests that the biomechanical properties of this junction might contribute to the development of IVDE 2 . The thoracic vertebral column is a rigid structure compared to the more mobile lumbar vertebral column, and intervertebral discs play an important role in maintaining thoracic spinal stability 18 …”

Section: Introductionmentioning

confidence: 99%

“…1 It is characterised by extrusion of calcified and dehydrated nucleus pulposus through the ruptured annulus fibrosus into the vertebral canal. [2][3][4] Although every dog breed can be affected, dachshunds and miniature dachshunds in particular are overrepresented in several studies. [5][6][7][8][9] It has been suggested that approximately 20%-25% of dachshunds are affected by IVDE during their lifetime.…”

Section: Introductionmentioning

confidence: 99%

“…5 This suggests that the biomechanical properties of this junction might contribute to the development of IVDE. 2 The thoracic vertebral column is a rigid structure compared to the more mobile lumbar vertebral column, and intervertebral discs play an important role in maintaining thoracic spinal stability. 18 The aim of this prospective study was to investigate whether the ratio between thoracic and lumbar vertebral column lengths is associated with the presence of thoracolumbar IVDE in miniature dachshunds.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Thoracic to lumbar vertebral column length and length ratios in miniature dachshunds with and without thoracolumbar intervertebral disc extrusion

Fletcher

Ives²,

Kajin

et al. 2023

Veterinary Record

View full text Add to dashboard Cite

BackgroundThe chondrodystrophic body type predisposes miniature dachshunds to thoracolumbar intervertebral disc extrusion (IVDE). However, the relationship between thoracolumbar IVDE and the relative lengths of the thoracic and lumbar vertebral columns has not yet been evaluated.MethodsThis prospective multicentre study included 151 miniature dachshunds with (n = 47) and without (n = 104) thoracolumbar IVDE. All dogs had their thoracic and lumbar vertebral columns measured with a tape measure. Detailed descriptions were provided to facilitate consistent measurement. A thoracic to lumbar vertebral column ratio was calculated. Thoracolumbar IVDE was confirmed by magnetic resonance imaging or computed tomography.ResultsThe thoracic to lumbar vertebral column length ratio and absolute thoracic vertebral column length were significantly smaller in miniature dachshunds with IVDE than in those without IVDE (p < 0.0001 for both). There were no significant differences in lumbar vertebral column length, age, sex or neuter status between the two groups.LimitationsThe dogs without IVDE did not undergo a neurological examination and the thoracic and lumbar vertebral column measurements were not validated.ConclusionsThe relative lengths of the thoracic and lumbar vertebral column segments could contribute to the development of thoracolumbar IVDE in miniature dachshunds. Further studies are needed to evaluate ideal thoracic to lumbar vertebral column length ratios in miniature dachshunds.

show abstract

Section: Discussionmentioning

confidence: 99%