Influence of total laminectomy on the mechanical behavior of lumbosacral spine. Biomed Sci Instrum 2008;44:280-5
Date
01/15/2009Pubmed ID
19141929Abstract
An anatomically accurate validated three-dimensional finite element model was used to investigate the biomechanical effects of total laminectomy on the mechanical behavior of human lumbosacral spine. A total laminectomy was simulated at L4 or L5. Flexion, extension and lateral bending were applied using pure moment. Rotations were obtained under each loading mode. Maximum von Mises stresses in the annulus fibrosis under different loading were also obtained. It was found that L5 laminectomy has a greater influence on spinal column rotation. The maximum stress in the annulus increased significantly in L5 laminectomy model but not in the L4 model.
Author List
Guan Y, Yoganandan N, Pintar FA, Wang M, Maiman DJAuthors
Dennis J. Maiman PhD, MD Emeritus Professor in the Neurosurgery department at Medical College of WisconsinFrank A. Pintar PhD Professor in the Biomedical Engineering department at Medical College of Wisconsin
Marjorie Wang MD Clinical Transformation Officer, Chief, Professor in the Neurosurgery department at Medical College of Wisconsin
Narayan Yoganandan PhD Professor in the Neurosurgery department at Medical College of Wisconsin
