Cervical ossification of the posterior longitudinal ligament: factors affecting the effect of posterior decompression

The Journal of Spinal Cord Medicine
Norihiro NishidaToshihiko Taguchi

Abstract

Decompression procedures for cervical myelopathy of ossification of the posterior longitudinal ligament (OPLL) are anterior decompression with fusion, laminoplasty, and posterior decompression with fusion. Preoperative and postoperative stress analyses were performed for compression from hill-shaped cervical OPLL using 3-dimensional finite element method (FEM) spinal cord models. Three FEM models of vertebral arch, OPLL, and spinal cord were used to develop preoperative compression models of the spinal cord to which 10%, 20%, and 30% compression was applied; a posterior compression with fusion model of the posteriorly shifted vertebral arch; an advanced kyphosis model following posterior decompression with the spinal cord stretched in the kyphotic direction; and a combined model of advanced kyphosis following posterior decompression and intervertebral mobility. The combined model had discontinuity in the middle of OPLL, assuming the presence of residual intervertebral mobility at the level of maximum cord compression, and the spinal cord was mobile according to flexion of vertebral bodies by 5°, 10°, and 15°. In the preoperative compression model, intraspinal stress increased as compression increased. In the posterior decompres...Continue Reading

References

Jun 1, 1978·Journal of Neurosurgery·A R Tunturi
Aug 1, 1993·Journal of Spinal Disorders·K ShinomiyaI Yamaura
Mar 17, 1999·Clinical Orthopaedics and Related Research·I YamauraS Shindo
May 2, 2008·Journal of Neurosurgery. Spine·Yoshihiko KatoToshihiko Taguchi
Jul 17, 2008·Journal of Neurotrauma·Jason T MaikosDavid I Shreiber
Mar 13, 2009·Journal of Neurosurgery. Spine·Macondo MochizukiMasashi Yamazaki
Jun 15, 2010·Spine·Xin-Feng Li, Li-Yang Dai
Nov 5, 2010·Journal of Neurotrauma·Cecilia PerssonRichard M Hall
Nov 29, 2011·The Journal of Spinal Cord Medicine·Norihiro NishidaToshihiko Taguchi

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Citations

Mar 31, 2018·Experimental and Therapeutic Medicine·Tomoya OkazakiToshihiko Taguchi
Jun 14, 2019·Computational and Mathematical Methods in Medicine·Norihiro NishidaXian Chen
Aug 10, 2021·Journal of Biomechanical Engineering·Marie-Hélène BeauséjourYvan Petit

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