JERK TEST FOR POSTEROINFERIOR INSTABILITY Posterior instability often due to posteroinferior labrum tearscan be decently diagnosed with the help of the Jerk Test. Kim et al. (2004) found a sensitivity of 90% and a specificity of 85%, which makes it a moderate test to confirm posteroinferior labrum tears and a good test to exclude the pathology. The authors also describe that a painful response during this test was a predictor of failure for conservative treatment. | Physiotutors

W.H.A.T. TEST FOR DE QUERVAIN'S DISEASE De Quervain's disease is defined as tenosynovitis of the abductor pollicis longus and the extensor pollicis brevis tendons due to repetitive hand or wrist movements. Different tests have been described in the past with the most popular test being the Eichhoff's test, often wrongly named as the Finkelstein's test. Over the years, a misinterpretation has occurred between these two tests, the latter being confused with the first. As the Eichhoff’s test is ver