Influence of lumbar spine rhythms and intra-abdominal pressure on spinal loads and trunk muscle forces during upper body inclination

R Arshad, T Zander, M Dreischarf, H Schmidt - Medical engineering & …, 2016 - Elsevier
lumbar spine rhythms and intra-abdominal pressure on the compressive and shear forces in
L4-L5 disc and the trunk muscle forces … 3, shear forces tend to decrease in anterior direction …

Load Transfer Characteristics Between Posterior Spinal Implants and the Lumbar Spine Under Anterior Shear Loading: An: In Vitro: Investigation

AD Melnyk, TL Wen, S Kingwell, JD Chak, V Singh… - Spine, 2012 - journals.lww.com
… N axial compression force and a cyclic anterior shear force (5–250 … Musculature and soft
tissue were removed from the … , indicated by the reduced anterior translation compared with the …

Predictors of L4L5 Degenerative Lumbar Spondylolisthesis: L4 Inclination Angle and Facet Joint Angle

M Guo, C Kong, S Sun, X Sun, X Li, S Lu - World neurosurgery, 2019 - Elsevier
… include muscles (M 1 and M 2 ), intervertebral discs (… strength of the stability of L4L5 level.
Therefore, the atrophy of the MM would lead to a decrease in spinal tension and a reduction

Load displacement behavior of the human Lumbo‐sacral joint

KM McGlashen, JAA Miller, AB Schultz… - Journal of …, 1987 - Wiley Online Library
… In this study, static shear forces and moments, the latter using … and trunk muscle forces,
the L3 level of the lumbar spine is … could be expected to result in reduced torsional resistance. …

Foot positioning instruction, initial vertical load position and lifting technique: effects on low back loading

I Kingma, T Bosch, L Bruins, JH Van Dieën - Ergonomics, 2004 - Taylor & Francis
shear forces at the L5/S1 intervertebral disc, muscle forces … at the L4/L5 joint, and peak
lumbar flexion. In addition, at the … ) that mainly consisted of a reduced shear force in the free lifts (…

Pure shear properties of lumbar spinal joints and the effect of tissue sectioning on load sharing

WW Lu, KDK Luk, AD Holmes, KMC Cheung… - Spine, 2005 - journals.lww.com
… The shear forces generated in the human lumbar spine in … but the musculature plays a large
part in resisting shear, resulting … No further decrease in load was found with further section of …

Musculoskeletal simulation of the relationship between foot position and stress of the L4L5 joint in supporting standing-up motion to prevent low back pain among …

K Kitagawa, Y Nishisako, T Nagasaki… - Journal of Mechanics …, 2019 - World Scientific
… /shear stress of the L4L5 joint during motions decreased. From our findings, we hypothesized
that the foot position may reduce the lumbar load … Muscle forces and vertebral forces are …

Analysis of squat and stoop dynamic liftings: muscle forces and internal spinal loads

B Bazrgari, A Shirazi-Adl, N Arjmand - European Spine Journal, 2007 - Springer
… as well as net moment and internal compression/anterior shear forces at the L5–S1 level to
… safer lifting technique in reducing the net moment, muscle forces and internal ligamentous …

Anatomy and biomechanics of the back muscles in the lumbar spine with reference to biomechanical modeling

L Hansen, M De Zee, J Rasmussen, TB Andersen… - Spine, 2006 - journals.lww.com
reduce complexity, muscle units have been incorporated in an abridged manner, reducing
their actions more or less to a single force … , discs, and fasciae will interact with the muscles in …

The effect of on-body lift assistive device on the lumbar 3D dynamic moments and EMG during asymmetric freestyle lifting

M Abdoli-e, JM Stevenson - Clinical Biomechanics, 2008 - Elsevier
… to reduce force requirements of back muscles during lifting and … 3D moments about the L4/L5
disc would not change because … reduced the compressive forces but also the shear force at …