Evaluation of Shoulder Stability During Forceful Arm Exertions

Main Article Content

Kasey Cutlip
Ashish D Nimbarte
Suman Kanti Chowdhury
Majid Jaridi


Shoulder musculoskeletal disorders (MSDs) are a major cause of morbidity and pain in the modern working population. Epidemiological literature suggests that forceful arm exertions pose an increased risk for shoulder MSD development. The majority of shoulder MSDs involve the glenohumeral joint. The glenohumeral joint is characteristically unstable and stabilized by concavity compression mechanism. In this study a biomechanical model of shoulder complex was used to examine the concavity compression mechanism. Mechanical loading of the glenohumeral joint during forceful arm exertions was analyzed to quantify the angular position of the resultant muscle force vector in 3D space. The resultant muscle force vectors were almost always directed anteriorly, medially, and inferiorly, independent of the magnitude and the direction of the external force application. The knowledge gained in this study could possibly be used to quantify strain imposed on the shoulder muscles during forceful arm exertions.

Article Details

How to Cite
Cutlip, K., Nimbarte, A. D., Chowdhury, S. K., & Jaridi, M. (2015). Evaluation of Shoulder Stability During Forceful Arm Exertions. Industrial and Systems Engineering Review, 3(1), 49-58. https://doi.org/10.37266/ISER.2015v3i1.pp49-58
Author Biography

Ashish D Nimbarte, West Virginia University

Assistant Professor
Industrial and Management Systems Engineering



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