Ye-Soo Park; Hyoung-Jin Kim; Choong-Hyeok Choi; Won-Man Park; Yoon-Hyuk Kim

doi:10.12671/jkfs.2007.20.1.70

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Original Article
Biomechanical Efficacy of Various Anterior Spinal Fixation in Treatment of Thoraco-lumbar Spine Fracture: Ye-Soo Park, M.D., Hyoung-Jin Kim, M.D., Choong-Hyeok Choi, M.D., Won-Man Park, Yoon-Hyuk Kim, Ph.D.; Journal of the Korean Fracture Society 2007;20(1):70-75.
DOI: https://doi.org/10.12671/jkfs.2007.20.1.70
Published online: June 14, 2016

Department of Orthopaedic Surgery, Guri Hospital, Hanyang University College of Medicine, Seoul, Korea.

^*Department of Orthopaedic Surgery, Hanyang University College of Medicine, Seoul, Korea.

^†School of Advanced Technology, Kyung Hee University, Seoul, Korea.

Address reprint requests to: Yoon-Hyuk Kim, Ph.D. School of Advanced Technology, Kyung Hee University, 1, Seochondong, Giheung-gu, Yongin 449-701, Korea. Tel: 82-31-201-2028, Fax: 82-31-202-8106, yoonhkim@khu.ac.kr

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Abstract
REFERENCES

Abstract

Purpose
To evaluate the biomechanical results according to various anterior spinal fixation methodology in the treatment of thoracolumbar spine fracture.
Materials and Methods
The comparative analysis of fixation method was evaluated by three dimensional finite element model using the 1 mm reconstruction image of CT. Authors evaluated the flexion, extension, lateral bending, torsional stresses with 12 fixation methods for the compression and burst fracture.
Results
In biomechanical analysis, stiffness of body-fixation device was more stable in two-rod system in compression fracture and was stable in one-rod, two-rod system in burst fracture, but two-rod system was showed over-increase of stiffness.
Conclusion
Authors recommend the usage of two-rod system in anterior fixation only and anterior one-rod system in anterior-posterior fixation.
Key words: Thoracolumbar spine fracture, Anterior fixation, One-rod system

REFERENCES

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Fig. 1

The finite element models of thoracolumbar spine segments with different anteroposterior fixation techniques were developed.

(A) One-rod anterior fixation with posterior fixation (1R-M-P).

(B) Two-rod anterior fixation with posterior fixation (2R-M-P).

(C) Posterior fixation (0R-M-P).

Table 1

All datas of stiffness in construct varieties (Nm/°)

0R-NM-P: 0 rod - no midcolumn decompression - pedicle screw instrumentation, 1R-NM-NP: 1 rod - no midcolumn decompression - no pedicle screw instrumentation, 1R-NM-P: 1 rod - no midcolumn decompression - pedicle screw instrumentation, 2R-NM-NP: 2 rod - no midcolumn decompression - no pedicle screw instrumentation, 2R-NM-P: 2 rod - no midcolumn decompression - pedicle screw instrumentation, 0R-M-P: 0 rod - midcolumn decompression - pedicle screw instrumentation, 1R-M-NP: 1 rod - midcolumn decompression - no pedicle screw instrumentation, 1R-M-P: 1 rod - midcolumn decompression - pedicle screw instrumentation, 2R-M-NP: 2 rod - midcolumn decompression - no pedicle screw instrumentation, 2R-M-P: 2 rod - midcolumn decompression - pedicle screw instrumentation.

Figure & Data

REFERENCES

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Lumbar Spine Fracture
Seung-Wook Back, Hyun-Joong Cho, Ye-Soo Park
Journal of the Korean Fracture Society.2011; 24(3): 277. CrossRef

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Biomechanical Efficacy of Various Anterior Spinal Fixation in Treatment of Thoraco-lumbar Spine Fracture

J Korean Fract Soc. 2007;20(1):70-75. Published online January 31, 2007

DOI: https://doi.org/10.12671/jkfs.2007.20.1.70

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Biomechanical Efficacy of Various Anterior Spinal Fixation in Treatment of Thoraco-lumbar Spine Fracture

Fig. 1 The finite element models of thoracolumbar spine segments with different anteroposterior fixation techniques were developed. (A) One-rod anterior fixation with posterior fixation (1R-M-P). (B) Two-rod anterior fixation with posterior fixation (2R-M-P). (C) Posterior fixation (0R-M-P).

Fig. 1

Biomechanical Efficacy of Various Anterior Spinal Fixation in Treatment of Thoraco-lumbar Spine Fracture

Table 1

All datas of stiffness in construct varieties (Nm/°)

Table 1 All datas of stiffness in construct varieties (Nm/°)