VALGUS STRESS TEST FOR MEDIAL COLLATERAL LIGAMENT (MCL) INJURIES The Valgus or Abduction Stress Test is designed to stress the medial collateral ligament. In the 0° position, the test stresses the Posteriomedial complex (PMC) which is composed of the MCL, posterieure horn of the mediale meniscus, Posterior oblique ligament, semimembranosus expansions, meniscotibial (coronary) ligaments and the oblique popliteal ligament. In 20° flexion, the MCL is rather tested in isolation as less stress will b