Effect of Laminectomy on Stability of Lumbar Spine

Petr Tichy, Zdenek Horak, Jana Sindelarova


The paper aims at the presentation of the lumbar spine finite element model used in a study of segmental kinematics including the tissue loading. Lumbar spine FE-model consisting of the three lumbar vertebras, two disc (including annulus and nucleus) and vast variety of ligaments. The primary model objective is its verification by experimental test data obtained from cadaver spine segments. A confirmed model was used for a study of various range of laminectomy effect. On this model we simulate a various loading states witch can spine segment arrive at under physiologic conditions (compression, flexion, extension and lateral bending). FE-model could predict the laminectomy impact on the operation approach.


laminectomy; lumbar spine; stiffness; FEA

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ISSN 1801-1217 (Print)
ISSN 1805-9422 (Online)
Published by the Czech Technical University in Prague, Faculty of Mechanical Engineering