PS4-9 Analysis of the change of paraspinal muscle forces according to the fixation level of the lumbar spine(PS4: Poster Short Presentation IV,Poster Session)

2015 ◽  
Vol 2015.8 (0) ◽  
pp. 289
Author(s):  
Hae Won Choi ◽  
Young Eun Kim
Keyword(s):  
Lumbar Spine ◽  
Poster Session ◽  
Paraspinal Muscle ◽  
Muscle Forces ◽  
Short Presentation

Evaluation of Muscle Forces in a Synergistic Lumbar Spine Using Kinematics-Based Approach and Optimization

2001 ◽  
Author(s):  
A. Shirazi-Adl ◽  
M. El-Rich ◽  
D. Pop ◽  
M. Parnianpour
Keyword(s):  
Lumbar Spine ◽  
Load Distribution ◽  
Pelvic Tilt ◽  
Alternative Methods ◽  
Solution Technique ◽  
Muscle Forces ◽  
Optimal Load

Abstract Alternative methods have been proposed to solve the redundant problem of spinal active-passive load distribution. Due to the shortcomings in existing reduction, optimisation and EMG-driven models, and combination thereof, a novel kinematics-based approach is introduced that utilises the spinal passive-active synergy. Our recent studies demonstrate that, for a given task, the posture may be so adjusted as to yield an optimal load configuration requiring minimum muscle exertion [1]. In the current study, a solution technique for the redundant spinal system is described and applied to the analysis of a lumbar spine in an optimal posture obtained by varying the lordosis and pelvic tilt under a total of 2800N compression. The forces in lumbar muscles are subsequently computed for this optimal posture.

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