ABSTRACT
A systematic review of the literature found that the point prevalence for shoulder pain amongst those aged less than 70 years ranged from 7% to 27%, with wide differences in case definition between the various studies. In addressing the work-relatedness of shoulder problems, the first challenge is to determine the specific disorder in question. The teres minor muscle stems from the outer border of the scapula and runs across the back of the shoulder joint to attachments on both the humerus and the joint capsule. S. Tempelhof et al. reported on a series of 426 ultrasound examinations of asymptomatic shoulders. The epidemiological evidence for the work-relatedness of shoulder disorders was reviewed as part of the National Institute for Occupational Safety and Health review. In 2010, van Rijn and co-workers carried out a formal evaluation of all of the published papers on the risks associated with shoulder disorders, including Subacromial Impingement Syndrome and rotator cuff tears.
