Three dimensional finite element analysis of the pediatric lumbar spine. Part II: biomechanical change as the initiating factor for pediatric isthmic spondylolisthesis at the growth plate.

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
Koichi SairyoT Terai

Abstract

A non-linear 3-dimensional finite element pediatric lumbar spine model with vertebral growth plate and apophyseal bony ring was developed. Lumbar spondylolysis was simulated in the model. The Von Mises stresses in the structures surrounding the vertebral growth plate, including apophyseal bony ring and osseous endplate were calculated in various loading modes. Instantaneous axis of rotation (IAR) path from flexion to extension was also analyzed. The results were compared with those of the intact model and the literature. The IAR path was at the posterior disc-endplate space of the lower vertebra in the intact spine, and moved cranially towards the upper-posterior disc space in the lytic spine. This was in agreement with in vivo radiological data by Sakamaki et al. [19]. During various loading modes, stresses in the spondylolytic pediatric model were higher than that of the intact model; ranging from 1.1 to 6.0 times, with the highest value in extension at the growth plate. In conclusion, FE models indicate that stress concentrations in the lytic model increase at the growth plate which may lead to physis stress fracture leading to spondylolisthesis.

References

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Citations

May 5, 2010·Skeletal Radiology·Antonio LeoneLorenzo Bonomo
Apr 26, 2008·Archives of Orthopaedic and Trauma Surgery·Takahiro SasaKoichi Sairyo
Jan 12, 2011·Archives of Orthopaedic and Trauma Surgery·Tomoya TeraiNatsuo Yasui
May 6, 2010·Annals of Biomedical Engineering·M R HardistyC M Whyne
Oct 26, 2010·Medical & Biological Engineering & Computing·D Davidson JebaseelanS Rajasekaran
Jan 17, 2008·Current Opinion in Pediatrics·Han Jo Kim, Daniel W Green
Feb 16, 2013·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Zhiping GuoYingze Zhang
Mar 31, 2015·The Journal of Medical Investigation : JMI·Koichi SairyoShoji Fukuta
Aug 4, 2015·Medical & Biological Engineering & Computing·Wenhai WangHubert Labelle
Mar 24, 2015·Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine·Abdullah M AlqarniPaul A Hendrick
Mar 13, 2013·Computer Methods in Biomechanics and Biomedical Engineering·Gregory A Von Forell, Anton E Bowden
Dec 5, 2009·The American Journal of Sports Medicine·Koichi SairyoNatsuo Yasui
Feb 5, 2009·The Journal of Bone and Joint Surgery. British Volume·K SairyoN Yasui
Aug 3, 2010·The Journal of Bone and Joint Surgery. British Volume·T TeraiN Yasui
Mar 17, 2018·Experimental and Therapeutic Medicine·Daisuke NakashimaToshihiko Taguchi
Jan 10, 2020·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Chao ZhengZhuojing Luo
May 27, 2021·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·Hiroaki ManabeKoichi Sairyo

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