BACKGROUND AND PURPOSE: There is still a lack of evidence about the beneficial effects of ultrasound (US) intervention for the management of soft tissue problems. Thus, this study was designed to assess the effectiveness of US over a placebo intervention when added to other physical therapy interventions and exercise in the management of shoulder disorders. SUBJECTS AND METHODS: Forty patients who were diagnosed by ultrasonography or magnetic resonance imaging to have a periarticular soft tissue disorder of the shoulder were randomly assigned to either a group that received true US (n = 20; mean time since onset of pain 8.7 months, SD 8.8, range 1 to 36) or a group that received sham US (n = 20; mean time since onset of pain 8.1 months, SD 10.8, range 1 to 42). Besides true or sham US (10 minutes), superficial heat (10 minutes), electrical stimulation (15 minutes), and an exercise program (15 to 30 minutes) were administered to both groups 5 days each week for 3 weeks. RESULTS: Subjects showed within-group improvements in pain, range of motion, Shoulder Disability Questionnaire scores, and Health Assessment Questionnaire scores with the intervention, but the differences did not reach significance when compared between the groups. DISCUSSION AND CONCLUSION: The results suggest that true US, compared with sham US, brings no further benefit when applied in addition to other physical therapy interventions in the management of soft tissue disorders of the shoulder.

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