Abstract

To clarify the mechanical efficacy of the reconstruction of the posterior element following the cervical multiple laminectomies, stresses around cervical vertebrae are calculated in this paper. The cervical vertebrae are coated by the compact bone, and the deformation of these can be negligible in comparision with those of ligaments, intervertebral discs and cartilages. Thereby, the stresses around the cervical vertebrae are successfully solved with use of the rigid body-spring model method. The numerical calculations are carried out and it is shown that the reconstruction of the spinoligamentous complex is indispensable to the cervical laminectomy which is performed for the decompression of the spinal cord.

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