@inproceedings{6ce2f5d7e89048fbb6b5ec1a7770737d,
title = "A biomechanical study of L5-S1 low-grade isthmic spondylolisthesis using a personalized finite element model",
abstract = "The pars interarticularis lesions in isthmic spondylolisthesis result generally from mechanical stresses in the neural arch due to repetitive overload during daily activities or to trunk imbalance resulting from spino-pelvic morphology. The L5-pelvis junction of a low-grade isthmic spondylolisthesis patient was modeled using a personalized finite element model to investigate the biomechanical behavior of the L5-S1 motion segment. Stress distribution and facet contact pressure in the altered segment were analyzed under 500 N simulating the gravitational load. High von Mises stresses were located in the pars interarticularis, in the pedicle, and in the outer region of the annulus. A high contact pressure was obtained at the facet surfaces. Influenced by the pelvic morphology, the inclination of L5-S1 junction affects the resulting shear forces and may play a crucial role in spondylolisthesis development.",
keywords = "biomechanics, finite element, Low-grade isthmic spondylolisthesis, pars interarticularis, pedicle, personalized model, shear forces, stress",
author = "Marwan El-Rich and Aubin, {Carl Eric} and Isabelle Villemure and Hubert Labelle",
year = "2006",
language = "British English",
isbn = "1586036300",
series = "Studies in Health Technology and Informatics",
pages = "431--434",
booktitle = "Research into Spinal Deformities 5",
note = "6th Biennial Meeting of the International Research Society of Spinal Deformities ; Conference date: 21-06-2006 Through 24-06-2006",
}