A Biomechanical Analysis of Interspinous Spacer by 3D-Finite Element Method

Authors

  • Chung-Hyok Jon Pyongyang University of Medical Sciences
  • Mun-Sik Ko Pyongyang University of Medical Sciences
  • Jin-Myong Ra Pyongyang University of Medical Sciences
  • Yong-Dok Kim Pyongyang University of Medical Sciences
  • Hak-Pong Hwang Pyongyang University of Medical Sciences
  • Sung-Chol Ri Pyongyang University of Medical Sciences

Keywords:

interspinous, spacer, spine, stiffness, deformity

Abstract

Background: Interspinous spacers are known as reliable alternatives for the treatment of various spinal disorders including lumbar spinal stenosis, facet arthrosis, internal disc disruption and so on. Many studies have been performed to investigate biomechanical and clinical features in relation to different interspinous spacers; however, little has been reported on interspinous spacer made of high polymer plastic materials. We purposed to evaluate biomechanical properties of interspinous spacer made of high polymer plastic materials in 3D-finite element models. Method: On the basis of CT scans of the lumbar spines and sacrum, 3D-finite element models, assumed in which at L4-L5 level implanted by the interspinous spacer, have been built to analyze the biomechanical properties with ANSYS WORKBENCH, under four types of loads including flexion, extension, axial compression and axial rotation. Results: The biomechanical properties of stiffness and displacement at L4-L5 segment in the models implanted with the interspinous spacer were lower than at the same segment in the models in which applied no implants under the four loads. The loads produced the same tendency at the adjacent levels including L3-L4 and L5-S in terms of stiffness as well. Conclusion: The interspinous spacer made of plastic materials provides higher biomechanical stability in the implanted and adjacent segments of the spine.

 

Keywords: Interspinous, spacer, spine, stiffness, deformity

Author Biography

Mun-Sik Ko, Pyongyang University of Medical Sciences

Traumatology and Orthopaedics and general surgery

Downloads

Additional Files

Published

2021-01-05

Issue

Vol. 9 No. 3 (2020)

Section

Research Article

License

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

  • I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
  • I/We Author(s ) have neither given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
  • I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
  •  I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. ________________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.