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요추부 안정화를 위한 흉요근막의 역할 분석

Analysis of the Role of Thoracolumbar Fascia for Lumbar Spinal Stability

Journal of the Korean Society for Precision Engineering 2017;34(11):823-828.
Published online: November 1, 2017

1 단국대학교 기계공학과

1 Department of Mechanical Engineering, Dankook University

#E-mail: yekim@dankook.ac.kr, TEL: +82-31-8005-3520
• Received: March 23, 2017   • Revised: July 14, 2017   • Accepted: July 20, 2017

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Analysis of the Role of Thoracolumbar Fascia for Lumbar Spinal Stability
J. Korean Soc. Precis. Eng.. 2017;34(11):823-828.   Published online November 1, 2017
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Analysis of the Role of Thoracolumbar Fascia for Lumbar Spinal Stability
J. Korean Soc. Precis. Eng.. 2017;34(11):823-828.   Published online November 1, 2017
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Analysis of the Role of Thoracolumbar Fascia for Lumbar Spinal Stability
Image Image Image Image
Fig. 1 Developed musculoskeletal model. Spinal column was modelled with detailed finite element model
Fig. 2 Simplified thoracolumbar fascia model
Fig. 3 Muscle activities at erect standing and 40º forward flexed posture with or without TLF. Muscle activities was normalized with respect to the maximum voluntary contraction (IT: Iliocostalis lumborum pars thoracis, LT: Longissimus thoracis pars thoracis, IL: Iliocostalis lumborum pars lumborum, LL: Longissimus thoracis pars lumborum, MF: Multifidus, PM: Psoas major, RA: Rectus abdominis, QL: Quadratus lumborum)
Fig. 4 Contribution ratio of each muscle group with or without TLF (IT: Iliocostalis lumborum pars thoracis, LT: Longissimus thoracis pars thoracis, IL: Iliocostalis lumborum pars lumborum, LL: Longissimus thoracis pars lumborum, MF: Multifidus, PM: Psoas major, RA: Rectus abdominis, QL: Quadratus lumborum)
Analysis of the Role of Thoracolumbar Fascia for Lumbar Spinal Stability

Assumed fascial tension force (N)

Posture
TLF level
Erect FLX40
MLF1 0.32 2.11
MLF2 0.33 2.23
MLF3 0.45 3.02
PLF1 0.44 2.95
PLF2 0.42 2.77
PLF3 0.67 4.45
PLF4 0.76 5.09
PLF5 0.95 6.3
PLF6 1.71 11.4

Nucleus pressure in each disc (kPa)

Posture disc level Erect FLX40
w/o TLF w TLF w/o TLF w TLF
L1-L2 746.8 769.0 787.9 807.3
L2-L3 642.5 655.0 859.6 878.5
L3-L4 614.8 619.2 914.1 935.4
L4-L5 586.7 596.7 1036.0 1057.0
L5-S1 638.4 654.0 1225.0 1249.0

Final disc angle in each motion segment. Values in parenthesis indicate the motion segment rotation at the flexed posture (degree)

Posture disc level Erect FLX40
w/o TLF w TLF w/o TLF w TLF
L1-L2 6.46 6.51 4.85(1.61) 4.82(1.69)
L2-L3 7.04 7.06 1.30(5.74) 1.39(5.66)
L3-L4 9.25 9.22 1.75(7.5) 1.86(7.36)
L4-L5 11.70 11.73 3.65(8.05) 3.73(8.0)
L5-S1 14.94 14.90 7.43(7.51) 7.47(7.43)
Lordotic angle 52.41 52.43 22.99 22.27
Table 1 Assumed fascial tension force (N)
Table 2 Nucleus pressure in each disc (kPa)
Table 3 Final disc angle in each motion segment. Values in parenthesis indicate the motion segment rotation at the flexed posture (degree)