Development of an Enhanced Musculoskeletal Model for Simulating Lumbar Spine Loading During Manual Lifting Tasks

During manual lifting tasks, extreme loads, intervertebral shear forces, repeated loading and improper lifting techniques all contribute to the risks of back pain and injuries. A three-dimensional (3D) multi-segment musculoskeletal model, which includes 49° of freedom (DOFs) and 258 muscle-tendon units, was developed in this study for simulating loading conditions of the lower back during manual lifting tasks. The model was created in OpenSim, an open-source computer simulation platform. The enhanced musculoskeletal model provides a tool for more comprehensive simulations of lifting motions. To evaluate the capacity of the model for estimation of spinal loading, the loading at the L3/L4–L5/S1 under different lifting tasks were examined and compared with published data. The results encourage the feasibility of applying the model to research questions relating to lumbar spine loading.

[1]  Mary L Bouxsein,et al.  Development and Validation of a Musculoskeletal Model of the Fully Articulated Thoracolumbar Spine and Rib Cage. , 2015, Journal of biomechanical engineering.

[2]  Antonius Rohlmann,et al.  An enhanced and validated generic thoraco-lumbar spine model for prediction of muscle forces. , 2012, Medical engineering & physics.

[3]  Wafa Skalli,et al.  Radiographic analysis of the sagittal alignment and balance of the spine in asymptomatic subjects. , 2005, The Journal of bone and joint surgery. American volume.

[4]  D B Chaffin,et al.  A computerized biomechanical model-development of and use in studying gross body actions. , 1969, Journal of biomechanics.

[5]  Jérôme Noailly,et al.  Musculoskeletal Modeling of the Lumbar Spine to Explore Functional Interactions between Back Muscle Loads and Intervertebral Disk Multiphysics , 2015, Front. Bioeng. Biotechnol..

[6]  J. Pélissier,et al.  Sagittal alignment of spine and pelvis regulated by pelvic incidence: standard values and prediction of lordosis , 2006, European Spine Journal.

[7]  I. Kingma,et al.  Evidence for a role of antagonistic cocontraction in controlling trunk stiffness during lifting. , 2003, Journal of biomechanics.

[8]  F. Zajac,et al.  A planar model of the knee joint to characterize the knee extensor mechanism. , 1989, Journal of biomechanics.

[9]  R W Norman,et al.  Reassessment of the role of intra-abdominal pressure in spinal compression. , 1987, Ergonomics.

[10]  W S Marras,et al.  Spinal loading when lifting from industrial storage bins , 2002, Ergonomics.

[11]  N Arjmand,et al.  Model and in vivo studies on human trunk load partitioning and stability in isometric forward flexions. , 2006, Journal of biomechanics.

[12]  Ajay Seth,et al.  Muscle contributions to propulsion and support during running. , 2010, Journal of biomechanics.

[13]  A. Hill.  The heat of shortening and the dynamic constants of muscle , 1938 .

[14]  A Shirazi-Adl,et al.  Spinal stability and role of passive stiffness in dynamic squat and stoop lifts , 2007, Computer methods in biomechanics and biomedical engineering.

[15]  Scott Tashman,et al.  Capturing three-dimensional in vivo lumbar intervertebral joint kinematics using dynamic stereo-X-ray imaging. , 2014, Journal of biomechanical engineering.

[16]  Yanxin Zhang,et al.  Estimation of lumbar spinal loading and trunk muscle forces during asymmetric lifting tasks: application of whole-body musculoskeletal modelling in OpenSim , 2017, Ergonomics.

[17]  M Nissan,et al.  A Study of Vertebra and Disc Geometric Relations of the Human Cervical and Lumbar Spine , 1986, Spine.

[18]  D B Chaffin,et al.  The effect of strict muscle stress limits on abdominal muscle force predictions for combined torsion and extension loadings. , 1995, Journal of biomechanics.

[19]  Ayman Habib,et al.  OpenSim: Open-Source Software to Create and Analyze Dynamic Simulations of Movement , 2007, IEEE Transactions on Biomedical Engineering.

[20]  S Schmitt,et al.  A forward dynamics simulation of human lumbar spine flexion predicting the load sharing of intervertebral discs, ligaments, and muscles , 2015, Biomechanics and modeling in mechanobiology.

[21]  D. Sutherland.  The evolution of clinical gait analysis. Part II kinematics. , 2002, Gait & posture.

[22]  Miguel Christophy,et al.  A Musculoskeletal model for the lumbar spine , 2011, Biomechanics and Modeling in Mechanobiology.

[23]  Kwan suk Lee.  Biomechanical modelling of cart pushing and pulling , 1982 .

[24]  D. Thelen.  Adjustment of muscle mechanics model parameters to simulate dynamic contractions in older adults. , 2003, Journal of biomechanical engineering.

[25]  A. Schultz,et al.  Loads on the lumbar spine. Validation of a biomechanical analysis by measurements of intradiscal pressures and myoelectric signals. , 1982, The Journal of bone and joint surgery. American volume.

[26]  Chad J Morgan,et al.  Neutral upright sagittal spinal alignment from the occiput to the pelvis in asymptomatic adults: a review and resynthesis of the literature. , 2007, Journal of neurosurgery. Spine.

[27]  F.E. Zajac,et al.  An interactive graphics-based model of the lower extremity to study orthopaedic surgical procedures , 1990, IEEE Transactions on Biomedical Engineering.

[28]  M. Pandy,et al.  A Dynamic Optimization Solution for Vertical Jumping in Three Dimensions. , 1999, Computer methods in biomechanics and biomedical engineering.