scholarly journals Variations Among Human Lumbar Spine Segments and Their Relationships to In Vitro Biomechanics: A Retrospective Analysis of 281 Motion Segments From 85 Cadaveric Spines

10.14444/7021 ◽  
2020 ◽  
Vol 14 (2) ◽  
pp. 140-150
Author(s):  
ANNA G.U. SAWA ◽  
JENNIFER N. LEHRMAN ◽  
NEIL R. CRAWFORD ◽  
BRIAN P. KELLY
Keyword(s):  
Lumbar Spine ◽  
Retrospective Analysis ◽  
Human Lumbar Spine ◽  
In Vitro Biomechanics

Comparison of porcine and human lumbar spine flexion mechanics*

2003 ◽  
Vol 16 (01) ◽  
pp. 44-49 ◽  
Author(s):  
G. A. Dumas ◽  
D. A. Bednar ◽  
J. P. Dickey
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion ◽  
Mechanical Tests ◽  
Neutral Position ◽  
Spinal Fixation ◽  
Potential Health ◽  
Human Lumbar Spine ◽  
Pure Moment ◽  
Low Stiffness

SummaryAnimal models have been proposed as an alternative to human spinal specimens for in vitro mechanical testing due to the limited availability, poor reproducibility, high cost, and potential health risk associated with human specimens. The purpose of this study was to directly compare the flexion biomechanics of porcine and human lumbar spines. We determined the range of motion, laxity zone and the stiffness under pure-moment flexion loading. The porcine and human specimens showed qualitative similarities in mechanical behaviour. However the porcine specimens demonstrated a number of quantitative differences including a less-stiff, more extensive, low-stiffness region around the neutral position and a larger flexion range of motion. The results suggest that the porcine lumbar spine may be a potential model for the human lumbar spine for certain in vitro mechanical tests including comparisons between spinal fixation constructs.

The effect of six degree of freedom loading sequence on the in-vitro compressive properties of human lumbar spine segments

2016 ◽  
Vol 49 (14) ◽  
pp. 3407-3414 ◽  
Author(s):  
D.B. Amin ◽  
I.M. Lawless ◽  
D. Sommerfeld ◽  
R.M. Stanley ◽  
B. Ding ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Degree Of Freedom ◽  
Compressive Properties ◽  
Human Lumbar Spine ◽  
Loading Sequence ◽  
Six Degree Of Freedom

Facet Translation Analysis in the Lumbar Spine: An Application in Posterior Dynamic Stabilization

2012 ◽  
Author(s):  
Daniel J. Cook ◽  
Matthew S. Yeager ◽  
Boyle C. Cheng
Keyword(s):  
Lumbar Spine ◽  
Measurement Technique ◽  
Healthy Adult ◽  
Surgical Intervention ◽  
Dynamic Stabilization ◽  
Disc Disease ◽  
Human Lumbar Spine ◽  
Translation Analysis ◽  
Posterior Dynamic Stabilization

Facet articulation in the human lumbar spine has not been thoroughly characterized with regard to the effects of degeneration or surgical intervention. Kozanek et al. investigated the translation and rotation of the facets in 11 healthy adult subjects during maximal voluntary bending [1]. Li et al. used the same measurement technique on a cohort of 10 patients with degenerative disc disease (DDD) and found some significant differences in facet motion compared to a cohort of healthy patients [2]. Jegapragasan et al. investigated facet translations in intact lumbar spines in vitro and found the technique of facet translation analysis (FTA) to yield significantly different results compared to a similar analysis based on a vertebral body based coordinate system [3]. This abstract describes the application of this FTA technique in evaluating a posterior dynamic stabilization (PDS) system.

Sagittal plane motion in the human lumbar spine: Comparison of the in vitro quasistatic neutral zone and dynamic motion parameters

2006 ◽  
Vol 21 (9) ◽  
pp. 914-919 ◽  
Author(s):  
Ralph E. Gay ◽  
Brice Ilharreborde ◽  
Kristin Zhao ◽  
Chunfeng Zhao ◽  
Kai-Nan An
Keyword(s):  
Lumbar Spine ◽  
Sagittal Plane ◽  
Plane Motion ◽  
Neutral Zone ◽  
Dynamic Motion ◽  
Human Lumbar Spine ◽  
Motion Parameters

Biomechanical normality model of the Human lumbar spine (Lumbosacral region)

2019 ◽  
Author(s):  
Fernando Blaya Haro ◽  
Pilar San Pedro Orozco ◽  
Alonso Blaya San Pedro ◽  
Roberto D'Amato ◽  
Juan A. Juanes ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Lumbosacral Region ◽  
Human Lumbar Spine

The dynamic flexion/extension properties of the lumbar spine in vitro using a novel pendulum system

2007 ◽  
Vol 40 (12) ◽  
pp. 2767-2773 ◽  
Author(s):  
Joseph J. Crisco ◽  
Lindsey Fujita ◽  
David B. Spenciner
Keyword(s):  
Lumbar Spine ◽  
Pendulum System ◽  
Flexion Extension
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