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Rate of False Positive Using the Cyriax Release Test for Thoracic Outlet Syndrome in an Asymptomatic Population

2004; Taylor & Francis; Volume: 12; Issue: 2 Linguagem: Inglês

10.1179/106698104790825374

2042-6186

Jean‐Michel Brismée, Kerry K. Gilbert, Krista Isom, RACHEL M. HALL, Bret Leathers, Nathan Sheppard, Steven F. Sawyer, Phillip S. Sizer,

Shoulder Injury and Treatment

The purpose of this study was to determine the rate of false positive findings during the Cyriax Release Test for Thoracic Outlet Syndrome (TOS) in an asymptomatic population. The 119 subjects (238 shoulder girdles) with a mean age of 36.3 years included in the study were asked to report any symptoms noted at 1, 3, 5, 10 and 15 minutes of holding the Cyriax Release Test position, which consisted of passive shoulder girdle elevation. Specificity was calculated for each time interval and was highest at 1 minute (97.4%), with a progressive decrease to 77.4% at 15 minutes. Correlation and chi-square analyses were run between demographic data/medical history and positive test results. Neck pain was the only statistically significant variable (p < 0.001). The high specificity of the Cyriax Release Test at 1 and 3 minutes justifies its continued use in clinical setting for the diagnosis of Thoracic Outlet Syndrome.