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…  Job design and stress model…

MSD Information  Progression…  Classification…  Diagnosis…

MSD research evaluation  Selection bias…  Response bias…  Confounding…  Misclassification bias…

MSD research evaluation (cont.)  Generalizability…  Sample size…

MSD research methods  Experiments  Observational studies… …

Prospective cohort

Case-control design

Cross-sectional studies

Case-series study

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

Aspects of the MSD literature  Association between disease and work exposure…  Temporality…  Specificity…  Consistency…

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

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

Peripheral nerve disorders  Mechanical nerve entrapment…

Tension neck syndrome  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Shoulder tendonitis  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Epicondylitis  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Carpal tunnel syndrome  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

De Quervains tendonitis  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Hand arm vibration syndrome  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Dupuytren’s contracture  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Achilles tendonitis  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Thoracic outlet syndrome  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Radiculopathy  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Osteoarthritis  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Hypothenar hammer syndrome  Symptoms:  Diagnosis:  Affected population:  Prediction:

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

Knee bursitis  Symptoms:  Diagnosis:  Affected population:  Prediction:

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