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Back injuries: mechanical stresses in the human spine.

Authors
Anonymous
Source
Terminal Progress Report, 1988 Jan; :1-5
Link
NIOSHTIC No.
00181265
Abstract
Several methods were used to analyze the mechanics of the human spine during various manual materials handling tasks, resulting in the formation of several biomechanical models. The data gathered to construct these models concerned mainly the response of the cadaver lumbar motion segments in compression, sagittal plane shear and bending, frontal plane shear and bending, and torsion. Measurements were taken of force displacement, moment rotation and disc bulge responses along with intradiscal pressure increases. Exploratory studies of trunk biomechanics were made during materials handling tasks. The finite element models of lumbar motion segments were useful in analyzing internal stresses, given segment geometry, material properties and applied loads. Whole trunk deformable element models developed during the initial years of this study were extended to examine the roles of the trunk muscles in imposing loads on the motion segments during handling activities. While the human body is not rigid, much progress was made in understanding body movements by using rigid body equilibrium considerations. These models enabled the loads imposed by a physical activity on the lumbar spine and the corresponding trunk muscle contraction forces to be calculated. Initial studies on the importance of body dynamics in task performance have been initiated.
Keywords
NIOSH-Grant; Musculoskeletal-system; Skeletal-system; Back-injuries; Maintenance-workers; Materials-handling; Biomechanics; Ergonomics; Muscle-function
Contact
Materials Engineering University of Illinois Dept of Materials Engr, Bx4348 Chicago, Ill 60680
Publication Date
19880101
Document Type
Final Grant Report
Funding Amount
663463
Funding Type
Grant
Fiscal Year
1988
NTIS Accession No.
PB88-247721
NTIS Price
A01
Identifying No.
Grant-Number-R01-OH-00514
NIOSH Division
OEP
Priority Area
Musculoskeletal-system
Source Name
Terminal Progress Report
State
IL
Performing Organization
University of Illinois Chicago Circle, Chicago, Illinois
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