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Finite element study of healthy, pathological and surgical lumbar spine biomechanics
Lumbar pain is one of the most common problems of population. Far too often it is caused by ageing and degeneration of intervertebral discs (IVD). Fusion techniques, as arthrodesis, were the first surgeries used to avoid lumbar pathologies. However, arthrodesis reduced dramatically the spine movement. So the aim of this work was to study numerically how different pathologies affect lumbar spine...
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An alternative approach to lumbar fusion surgery is to restore motion to the diseased segment with a disc prosthesis. The goal of the disc prosthesis is to replace the diseased disc while preserving and/or restoring the motion at the operated spinal level. The purpose of this study was to determine the ability of the PRODISC® (Spine Solutions Inc., Paoli, PA) disc prosthesis to restore lumbar s...
متن کاملDecompression, arthrodesis, and arthroplasty: decision making in the surgical treatment of lumbar disc disease.
What was once a simple lumbar disc herniation treated with laminotomy and partial discectomy, with typically excellent results (25, 46), has evolved into a surprisingly complex clinical problem with a dazzling array of therapeutic alternatives. Much of this, of course, is based on clinical studies emphasizing the heterogeneity of disc disorders. Advances in biomechanics research focusing on the...
متن کاملSimulation of Lumbar Spine Biomechanics Using Abaqus
Biomechanics testing of the lumbar spine, using cadaveric specimens, has the advantage of using actual tissue, but has several disadvantages including variability between specimens and difficultly acquiring measures such as disc pressure, bone strain, and facet joint contact pressure. A simulation model addresses all of these disadvantages. The objective of this work is to develop a method to s...
متن کاملRegional annulus fibre orientations used as a tool for the calibration of lumbar intervertebral disc finite element models.
The collagen network of the annulus fibrosus largely controls the functional biomechanics of the lumbar intervertebral discs (IVDs). Quantitative anatomical examinations have shown bundle orientation patterns, possibly coming from regional adaptations of the annulus mechanics. This study aimed to show that the regional differences in annulus mechanical behaviour could be reproduced by consideri...
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