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Psy 552 Ergonomics & Biomechanics

Psy 552 Ergonomics & Biomechanics. Lecture 20. MSDs. “A descriptor for disorders and diseases of the musculoskeletal system having proven or hypothetical work related causal components” The concept is similar to: … … … …. MSD Modeling. Dose-Response… Biomechanically…

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Psy 552 Ergonomics & Biomechanics

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  1. Psy 552 Ergonomics & Biomechanics Lecture 20

  2. MSDs • “A descriptor for disorders and diseases of the musculoskeletal system having proven or hypothetical work related causal components” • The concept is similar to: • … • … • … • …

  3. MSD Modeling • Dose-Response… • Biomechanically… • Job design and stress model…

  4. MSD Information • Progression… • Classification… • Diagnosis…

  5. MSD research evaluation • Selection bias… • Response bias… • Confounding… • Misclassification bias…

  6. MSD research evaluation (cont.) • Generalizability… • Sample size…

  7. MSD research methods • Experiments • Observational studies… • … • … • … • …

  8. Prospective cohort

  9. Case-control design

  10. Cross-sectional studies

  11. Case-series study

  12. Exposure measurements • Bernard et al. (1994)… • Fransson-Hall et al. (1995)…

  13. Aspects of the MSD literature • Association between disease and work exposure… • Temporality… • Specificity… • Consistency…

  14. Aspects of the MSD literature (cont.) • Predictability… • Consistency of findings • The NIOSH categories…

  15. Tendon Disorders • Tendonitis and tenosynovitis – inflammation of the tendon or synovial membrane of the tendon sheath. • Locations…

  16. Peripheral nerve disorders • Mechanical nerve entrapment…

  17. Tension neck syndrome • Symptoms: • Diagnosis: • Affected population: • Prediction:

  18. Tension neck syndrome (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  19. Shoulder tendonitis • Symptoms: • Diagnosis: • Affected population: • Prediction:

  20. Shoulder tendonitis (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  21. Epicondylitis • Symptoms: • Diagnosis: • Affected population: • Prediction:

  22. Epicondylitis (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  23. Carpal tunnel syndrome • Symptoms: • Diagnosis: • Affected population: • Prediction:

  24. Carpal tunnel syndrome (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  25. De Quervains tendonitis • Symptoms: • Diagnosis: • Affected population: • Prediction:

  26. De Quervains tendonitis (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  27. Hand arm vibration syndrome • Symptoms: • Diagnosis: • Affected population: • Prediction:

  28. Hand arm vibration syndrome (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  29. Dupuytren’s contracture • Symptoms: • Diagnosis: • Affected population: • Prediction:

  30. Dupuytren’s contracture (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  31. Achilles tendonitis • Symptoms: • Diagnosis: • Affected population: • Prediction:

  32. Achilles tendonitis (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  33. Thoracic outlet syndrome • Symptoms: • Diagnosis: • Affected population: • Prediction:

  34. Thoracic outlet syndrome (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  35. Radiculopathy • Symptoms: • Diagnosis: • Affected population: • Prediction:

  36. Radiculopathy (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  37. Osteoarthritis • Symptoms: • Diagnosis: • Affected population: • Prediction:

  38. Osteoarthritis (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  39. Hypothenar hammer syndrome • Symptoms: • Diagnosis: • Affected population: • Prediction:

  40. Hypothenar hammer syndrome (cont.) • Consistency of association: • Causal factors: • Work relatedness:

  41. Knee bursitis • Symptoms: • Diagnosis: • Affected population: • Prediction:

  42. Knee bursitis (cont.) • Consistency of association: • Causal factors: • Work relatedness:

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