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Posterior Sag Sign

The University College Copenhagen's Physiotherapy Programme uses this youtube channel to support our students skills in performing clinical examination methods and tests. The videos are used as support for teaching during the semesters, and in conjunction with clinical trials, casework and more. In this light our intention is that the videos should be viewed as a part of an overall learning modality, and not as a stand-alone learning tool, In addition, the videos can be used for practitioners, teachers and others who need a refresher of specific tests. This video is not medical advice to patients. Description of test: Test for integrity of posterior cruciate ligament Protocol: observe the position of tibia in relation to femur, in 90° knee flexion with a) 45° flexion in hip (foot in the table) and b) 90° flexion in the hip. Then, ask the patient to make an active knee extension. Positive test: the tibia is posteriorly translated in relation to the femur, in either a) or b). In active knee extension the tibia translates anteriorly, to a normal position.