title: Comparative evaluation of six quantitative lifting tools to estimate spine loads during static activities.
abstract: Different lifting analysis tools are commonly used to assess spinal loads and risk of injury. Distinct musculoskeletal models with various degrees of accuracy are employed in these tools affecting thus their relative accuracy in practical applications. The present study aims to compare predictions of six tools (HCBCF, LSBM, 3DSSPP, AnyBody, simple polynomial, and regression models) for the L4-L5 and L5-S1 compression and shear loads in twenty-six static activities with and without hand load. Significantly different spinal loads but relatively similar patterns for the compression (R(2) > 0.87) were computed. Regression models and AnyBody predicted intradiscal pressures in closer agreement with available in vivo measurements (RMSE ≈ 0.12 MPa). Due to the differences in predicted spinal loads, the estimated risk of injury alters depending on the tool used. Each tool is evaluated to identify its shortcomings and preferred application domains.
authors: Department of Mechanical Engineering, Sharif University of Technology, Tehran 11155-9567, Iran.
authors: Mohammad Ali
authors: MA
authors: Rajaee
authors: Department of Mechanical Engineering, Sharif University of Technology, Tehran 11155-9567, Iran. Electronic address: arjmand@sharif.edu.
authors: Navid
authors: N
authors: Arjmand
authors: Division of Applied Mechanics, Department of Mechanical Engineering, École Polytechnique, Montréal, Québec, Canada.
authors: Aboulfazl
authors: A
authors: Shirazi-Adl
authors: Institut de recherche Robert Sauvé en santé et en sécurité du travail, Montréal, Québec, Canada.
authors: André
authors: A
authors: Plamondon
authors: Julius Wolff Institut Charité - Universitätsmedizin Berlin, Germany.
authors: Hendrik
authors: H
authors: Schmidt
mesh_terms: D001696:Biomechanical Phenomena; D004864:Equipment and Supplies / Q000592:standards; D006801:Humans; D017770:Lifting; D008159:Lumbar Vertebrae / Q000502:physiology; D008297:Male; D008954:Models, Biological; D013131:Spine / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology
keywords: Biomechanical models; Lifting tools; Spine loads