Prevalence of work related musculoskeletal disorders in active union carpenters.

OBJECTIVES: To determine the prevalence and risk factors for work related musculoskeletal disorders among union carpenters. METHODS: A detailed questionnaire on musculoskeletal symptoms and work history was administered to 522 carpenters. The symptom questions assessed if carpenters experienced pain, numbness, or tingling in a particular body region. A subset of this group then received a physical examination of the upper extremities and knees. RESULTS: The study group was primarily white (94.9%) and male (97.8%) with a mean age of 42.3 years. The highest prevalence of work related musculoskeletal disorders cases by carpentry specialty ranged from 20%-24% for those doing drywall or ceiling, finishing or framing, and the building of concrete forms. Generally, as duration of employment increased, the prevalence of symptoms increased. An adjusted logistic regression analysis showed that the group with the longest (> or = 20 years) duration of employment in carpentry was significantly associated with work related musculoskeletal disorders of the shoulders (odds ratio (OR) 3.2, 95% confidence interval (95% CI) 1.1 to 8.9), hands or wrists (OR 3.1, 95% CI 1.1 to 8.4), and knees (OR 3.5, 95% CI 1.3 to 9.2). Also, analyses showed that carpenters who reported that they had little or no influence over their work schedule had significant increases of work related musculoskeletal disorders of the shoulders, hips, and knees with ORs of 1.9 (95% CI 1.1 to 3.2), 2.9 (95% CI 1.1 to 7.2), and 2.3 (95% CI 1.2 to 4.1), respectively. Feeling exhausted at the end of day was also a significant risk factor for work related musculoskeletal disorders of the knee (OR 1.8, 95% CI 1.1 to 3.1). Upper extremity disorders were the most prevalent work related musculoskeletal disorders reported among all carpenters. Drywall or ceiling activities involve a considerable amount of repetitive motion and awkward postures often with arms raised holding heavy dry walls in place, whereas form work is notable for extensive lumbar flexion and had the two highest rates of work related musculoskeletal disorders. The psychosocial element of job control was associated with both upper and lower extremity disorders. These union carpenters, who were relatively young, already were experiencing considerable work related physical problems. CONCLUSION: This study supports the need for vigilant ergonomic intervention at job sites and early ergonomic education as an integral part of apprenticeship school training to ensure that carpenters remain fit and healthy throughout their working lifetime.

[1]  E Viikari-Juntura,et al.  Incidence of tenosynovitis or peritendinitis and epicondylitis in a meat-processing factory. , 1991, Scandinavian journal of work, environment & health.

[2]  A Bhattacharya,et al.  Traumatogenic factors affecting the knees of carpet installers. , 1985, Applied ergonomics.

[3]  P. Succop,et al.  Reliability of questionnaire information measuring musculoskeletal symptoms and work histories. , 1998, American Industrial Hygiene Association journal.

[4]  Amit Bhattacharya,et al.  An Ergonomic Walkthrough Observation of Carpentry Tasks: A Pilot Study , 1997 .

[5]  T R Hales,et al.  Epidemiology of work-related musculoskeletal disorders. , 1996, The Orthopedic clinics of North America.

[6]  T. Armstrong,et al.  A conceptual model for work-related neck and upper-limb musculoskeletal disorders. , 1993, Scandinavian journal of work, environment & health.

[7]  F. Harrell,et al.  Prognostic/Clinical Prediction Models: Multivariable Prognostic Models: Issues in Developing Models, Evaluating Assumptions and Adequacy, and Measuring and Reducing Errors , 2005 .

[8]  P. Roto,et al.  Prevalence of epicondylitis and tenosynovitis among meatcutters. , 1984, Scandinavian journal of work, environment & health.

[9]  W. Halperin,et al.  Mortality of Carpenters' Union members employed in the U.S. construction or wood products industries, 1987–1990 , 1996 .

[10]  L. Fine,et al.  Hand-wrist disorders among investment casting plant workers. , 1987, The Journal of hand surgery.

[11]  I Kuorinka,et al.  Prevalence of epicondylitis and elbow pain in the meat-processing industry. , 1991, Scandinavian journal of work, environment & health.

[12]  M. Thun,et al.  Morbidity from repetitive knee trauma in carpet and floor layers. , 1987, British journal of industrial medicine.

[13]  L. Fine,et al.  Job task and psychosocial risk factors for work-related musculoskeletal disorders among newspaper employees. , 1994, Scandinavian journal of work, environment & health.

[14]  L. Bradley,et al.  Rheumatoid arthritis: review of psychological factors related to etiology, effects, and treatment. , 1985, Psychological bulletin.

[15]  I. Kuorinka,et al.  Occupational rheumatic diseases and upper limb strain in manual jobs in a light mechanical industry. , 1979, Scandinavian journal of work, environment & health.

[16]  J. Schlesselman,et al.  Sample size requirements in cohort and case-control studies of disease. , 1974, American journal of epidemiology.

[17]  J. Hurrell,et al.  Exposure to job stress--a new psychometric instrument. , 1988, Scandinavian journal of work, environment & health.

[18]  W K Sieber,et al.  Mortality of Carpenters' Union members employed in the U.S. construction or wood products industries, 1987-1990. , 1996, American journal of industrial medicine.

[19]  P Leino,et al.  Symptoms of stress predict musculoskeletal disorders. , 1989, Journal of epidemiology and community health.

[20]  Mukund Narayan,et al.  Construction: Ergonomics Awareness for Carpenters: An Overview , 1995 .

[21]  G. Lemasters,et al.  Nested case-control study of hand and wrist work-related musculoskeletal disorders in carpenters. , 1996, American journal of industrial medicine.