What are the conditions affecting humans that are considered to be work-related musculoskeletal disorders?
The musculoskeletal conditions that may be caused by (non-accidental) physical work activities include disorders of inflammation, degeneration, and physiological disruption of muscles, tendons, ligaments, nerves, synovia, and cartilage involving limbs and trunk. These entities are included in categories 353-355, 722-724, and 726-729 of the International Classification of Diseases (commonly referred to as ICD-9) (World Health Organization, 1977). Not every disorder in these categories may be caused by mechanical stressors, but all the major musculoskeletal disorders of interest are included in these groupings. Common examples are low back strain, tenosynovitis, and carpal tunnel syndrome. Question 2: What is the status of medical science with respect to the diagnosis and classification of such disorders? There is great variation in the diagnostic criteria for the many musculoskeletal disorders, ranging from clinical diagnoses based on symptoms and signs for some, to diagnoses based on s