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Psy 552 Ergonomics & BiomechanicsLecture 20
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MSDs “A descriptor for disorders and diseases of the
musculoskeletal system having proven or hypothetical work related causal components”
The concept is similar to: … … … …
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MSD Modeling Dose-Response…
Biomechanically…
Job design and stress model…
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MSD Information Progression…
Classification…
Diagnosis…
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MSD research evaluation Selection bias…
Response bias…
Confounding…
Misclassification bias…
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MSD research evaluation (cont.) Generalizability…
Sample size…
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MSD research methods Experiments
Observational studies… … … … …
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Prospective cohort
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Case-control design
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Cross-sectional studies
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Case-series study
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Exposure measurements Bernard et al. (1994)…
Fransson-Hall et al. (1995)…
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Aspects of the MSD literature Association between disease and work
exposure…
Temporality…
Specificity…
Consistency…
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Aspects of the MSD literature (cont.) Predictability…
Consistency of findings
The NIOSH categories…
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Tendon Disorders Tendonitis and tenosynovitis – inflammation
of the tendon or synovial membrane of the tendon sheath.
Locations…
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Peripheral nerve disorders Mechanical nerve entrapment…
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Tension neck syndrome Symptoms:
Diagnosis:
Affected population:
Prediction:
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Tension neck syndrome (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Shoulder tendonitis Symptoms:
Diagnosis:
Affected population:
Prediction:
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Shoulder tendonitis (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Epicondylitis Symptoms:
Diagnosis:
Affected population:
Prediction:
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Epicondylitis (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Carpal tunnel syndrome Symptoms:
Diagnosis:
Affected population:
Prediction:
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Carpal tunnel syndrome (cont.) Consistency of association:
Causal factors:
Work relatedness:
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De Quervains tendonitis Symptoms:
Diagnosis:
Affected population:
Prediction:
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De Quervains tendonitis (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Hand arm vibration syndrome Symptoms:
Diagnosis:
Affected population:
Prediction:
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Hand arm vibration syndrome (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Dupuytren’s contracture Symptoms:
Diagnosis:
Affected population:
Prediction:
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Dupuytren’s contracture (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Achilles tendonitis Symptoms:
Diagnosis:
Affected population:
Prediction:
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Achilles tendonitis (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Thoracic outlet syndrome Symptoms:
Diagnosis:
Affected population:
Prediction:
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Thoracic outlet syndrome (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Radiculopathy Symptoms:
Diagnosis:
Affected population:
Prediction:
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Radiculopathy (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Osteoarthritis Symptoms:
Diagnosis:
Affected population:
Prediction:
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Osteoarthritis (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Hypothenar hammer syndrome Symptoms:
Diagnosis:
Affected population:
Prediction:
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Hypothenar hammer syndrome (cont.) Consistency of association:
Causal factors:
Work relatedness:
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Knee bursitis Symptoms:
Diagnosis:
Affected population:
Prediction:
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Knee bursitis (cont.) Consistency of association:
Causal factors:
Work relatedness: