Physical Tasks of Military Occupational Specialties as Risk Factors for Knee-Related Disability Discharge.
ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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This report explores the relationship between physical demands of military occupations and disabling knee injury among men and women in the U.S. Army. The primary goal is to group military occupational specialties MOSs into a classification system that describes the physical demands of the job, and then to determine whether that classification system is useful in predicting the risk of knee-related disability discharge associated with a particular MOS. The study population was 7,454 cases and controls selected from the Total Army Injury and Health Outcomes Database TAIHOD. Primary MOSs were grouped into 11 categories Physical Demand Rating, Maximum Weight Lifted, Maximum DistanceRunWalked, Maximum Time Walked, Lift and Carry, Kneeling, Climbing, PushingPulling, Sitting, Standing, and Career Management Field. All analyses were stratified by gender, race, and age. Logistic regression models were constructed separately for males and females. The physical activities that had the strongest associations with disabling knee injury were maximum weight lifted, pushingpulling, kneeling, sitting, and standing. Gender, race, and age differences are noted. Disabling knee injuries are associated with occupational risk factors, and a system of classifying occupations into groups by physical activities can identify risk factors that may cause knee-related disability discharge.
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