The Low Back Cumulative Trauma Index: Development of a Low Back Disorder Exposure Assessment Tool Based on Fatigue Failure Theory

摘要

Recent evidence strongly suggests that force and repetition interact in a consistent manner to affect the riskof musculoskeletal disorders (MSDs), likely due to an underlying fatigue failure process in affected tissues.However, no MSD tools to date have been based on fatigue failure theory. The present proposal describesa basis for incorporating fatigue failure theory in a new low back exposure assessment tool: the Low BackCumulative Trauma Index (LBCTI), and provides an illustration of the effectiveness of such an approachusing an existing database on low back disorder (LBD) risk. The LBCTI demonstrated a dose-responserelationship to LBD risk.