Abstract/Details

A mechanical comparison of multi-segmental and uni-segmental lumbar porcine spines in flexion

Kerr, Duncan John.   University of Guelph (Canada) ProQuest Dissertations & Theses,  2001. MQ56336.

Abstract (summary)

This research focuses on the mechanical flexion response of the L3-L4 porcine vertebral joint as a multi-segmental and a uni-segmental specimen. The purpose was to determine if uni-segmental specimens are sufficient to evaluate the mechanical response of lumbar spinal specimens. Load-deformation curves were generated for three testing conditions using porcine lumbar spines: multi-segmental with posterior elements intact, multi-segmental with interspinous and supraspinous, ligaments sectioned at L2-L3 and L4-L5, and uni-segmental. Three parameters of the load-deformation curves were compared: slope of the high and low stiffness regions, and length of the laxity zone. A significant difference in the length of the laxity zone and range of motion was observed when the interspinous and supraspinous, ligaments were sectioned. The stiffness values failed to show a significant difference. These results are evidence of a change in the mechanical response in flexion when interspinous and supraspinous ligaments are sectioned at L2-L3 and L4-L5 and, therefore uni-segmental specimens are not appropriate for evaluation of lumbar spinal flexion mechanics.

Indexing (details)


Subject
Biophysics;
Anatomy & physiology;
Morphology
Classification
0786: Biophysics
0287: Morphology
Identifier / keyword
Biological sciences
Title
A mechanical comparison of multi-segmental and uni-segmental lumbar porcine spines in flexion
Author
Kerr, Duncan John
Number of pages
83
Degree date
2001
School code
0081
Source
MAI 39/04M, Masters Abstracts International
ISBN
978-0-612-56336-0
Advisor
Dickey, James
University/institution
University of Guelph (Canada)
University location
Canada -- Ontario, CA
Degree
M.Sc.
Source type
Dissertation or Thesis
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
MQ56336
ProQuest document ID
304695603
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
https://www.proquest.com/docview/304695603