Finite element analysis of lordosis restoration with anterior longitudinal ligament release and lateral hyperlordotic cage placement

European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
Juan S UribeBehrooz A Akbarnia

Abstract

Restoring sagittal alignment is an important factor in the treatment of spinal deformities. Recent investigations have determined that releasing the anterior longitudinal ligament (ALL) and placing hyperlordotic cages can increase lordosis, while minimizing need for 3 column osteotomies. The influences of parameters such as cage height and angle have not been determined. Finite element analysis was employed to assess the extent of lordosis achievable after placement of different sized lordotic cages. A 3-dimensional model of a L3-4 segment was used. Disc distraction was simulated by inserting interbody cages mid-body in the disc space. Analyses were performed in the following conditions: (1) intact, (2) ALL release, (3) ALL release + facetectomy, and (4) ALL release + posterior column osteotomy. Changes in segmental lordosis, disc height, foraminal height, and foraminal area were measured. After ALL resection and insertion of hyperlordotic cages, lordosis was increased in all cases. The lordosis achieved by the shorter cages was less due to posterior disc height maintained by the facet joints. A facetectomy increased segmental lordosis, but led to contact between the spinous processes. For some configurations, a posterior colum...Continue Reading

References

May 1, 1992·Spine·S A Grubb, H J Lipscomb
Mar 15, 2003·The Journal of Bone and Joint Surgery. American Volume·Keith H BridwellKathy Blanke
Oct 2, 2008·Neurosurgery·Praveen V MummaneniSigurd Berven
Nov 4, 2008·The Journal of Bone and Joint Surgery. American Volume·J Brian GillMichael Longley
Aug 1, 2009·Spine·Frank SchwabJean-Pierre Farcy
Dec 28, 2010·Journal of Neurosurgery. Spine·Virginie LafageJean-Pierre Farcy
Jul 28, 2012·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Pedro Berjano, Claudio Lamartina
Nov 20, 2012·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Pedro BerjanoClaudio Lamartina
Feb 23, 2013·Journal of Spinal Disorders & Techniques·Behrooz A AkbarniaJeff B Pawelek
Sep 14, 2014·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Giuseppe CostanzoAli A Baaj
Dec 10, 2014·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Pedro Berjano, Max Aebi

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Citations

Jul 9, 2016·Journal of Neurosurgery. Spine·Philip A SavilleVincent Arlet
Mar 8, 2018·Computer Methods in Biomechanics and Biomedical Engineering·Zhenjun ZhangWeiqiang Liu
Aug 25, 2018·Journal of Neurosurgery. Spine·Juan S UribePraveen V Mummaneni
Jun 13, 2020·Global Spine Journal·Jakub GodzikJuan S Uribe
Jul 12, 2016·Neurosurgery·Peng-Yuan Chang, Michael Y Wang
Aug 16, 2019·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Luigi La BarberaMarco Brayda-Bruno

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