Rotator cuff strength balance in glovebox workers

Lawton, Cindy M.; Weaver, Amelia M.; Chan, Martha Kwan Yi; Cournoyer, Michael Edward

doi:10.1016/j.jchas.2016.11.002

Rotator cuff strength balance in glovebox workers

Journal Article · Wed Nov 23 00:00:00 EST 2016 · Journal of Chemical Health and Safety

DOI:https://doi.org/10.1016/j.jchas.2016.11.002· OSTI ID:1342867

Lawton, Cindy M. ^[1]; Weaver, Amelia M. ^[1]; Chan, Martha Kwan Yi ^[1]; Cournoyer, Michael Edward ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Gloveboxes are essential to the pharmaceutical, semi-conductor, nuclear, and biochemical industries. While gloveboxes serve as effective containment systems, they are often difficult to work in and present a number of ergonomic hazards. One such hazard is injury to the rotator cuff, a group of tendons and muscles in the shoulder, connecting the upper arm to the shoulder blade. Rotator cuff integrity is critical to shoulder health. This study compared the rotator cuff muscle strength ratios of glovebox workers to the healthy norm. Descriptive statistics were collected using a short questionnaire. Handheld dynamometry was used to quantify the ratio of forces produced for shoulder internal and external rotation. Results showed this population to have shoulder strength ratios significantly different from the healthy norm. Strength ratios were found to be a sound predictor of symptom incidence. The deviation from the normal ratio demonstrates the need for solutions designed to reduce the workload on the rotator cuff musculature in order to improve health and safety. Assessment of strength ratios can be used to screen for risk of symptom development. As a result, this increases technical knowledge and augments operational safety.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1342867

Alternate ID(s):: OSTI ID: 1550677

Report Number(s):: LA-UR--16-27339

Journal Information:: Journal of Chemical Health and Safety, Journal Name: Journal of Chemical Health and Safety Journal Issue: 4 Vol. 24; ISSN 1871-5532

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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60 APPLIED LIFE SCIENCES
dynamometry
ergonomic hazards
glovebox
rotator cuff
strength ratios
workers

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