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Tendinite do manguito rotador em operadores de caixa de supermercado
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Background: Rotator cuff tendinitis (RCT) is common among supermarket cashiers due to their work demands. Repetitive movements of shoulder abduction and flexion are frequent, which might cause inflammation of the periarticular tissues of the shoulder, triggering signs and symptoms of RCT. Objectives: To investigate the prevalence of RCT in supermarket cashiers by means of assessment of symptoms, signs and ultrasound. Methods: Forty-four workers aged 28 to 47 years old participated in the study. The participants were subjected to a self-report shoulder complaints questionnaire, clinical examinations ("painful arc test", "empty can test" and "Hawkins-Kennedy impingement test") and soft tissue ultrasound. Results: A total of 26 participants reported shoulder pain on the right side (59.1%) and 16 (36.4%) on the left side. During clinical assessment, 15 and 11 workers (34.1% right and 25.0% left, respectively) had positive results on all three tests. Ultrasound showed alterations in the right and left shoulder in 16 and 17 participants (36.4 and 38.6%, respectively). No statistical correlation was found between the three approaches. The "empty can test" exhibited strong correlation with shoulder pain (χ2 Wald (1)=7.260, p=0.007). Similar results were obtained for the association between this test and ultrasound (χ2 Wald (1)=6.854, p=0.009, ROC=0.714, sensitivity 75%, specificity 67.9%). Conclusions: The results suggest that the "empty can test" is predictive of RCT in the medical surveillance of supermarket cashiers. This finding should be verified in future studies, especially with larger samples.
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Musculoskeletal pain Occupational medicine Public health surveillance Tendinopathy Physiology (medical) SDG 3 - Good Health and Well-being