Anterior and posterior drawer test for knee

Anterior and posterior drawer test for kneeCreated OnApril 18, 2020Last Updated OnApril 18, 2020byadmin You are here: Main Clinical Examination Anterior and posterior drawer test for knee < All Topics Table of Contents Anterior drawer test   The patient will be lying on the bed in a supine position and flexion of the knee to 90o, ensure both heels on the straight line. Before performing the test, you have to make sure there is no posterior sagging of one leg. In case of posterior cruciate ligament injury, there will be posterior sagging of the tibia. This is because of posterior displacement of the tibia and if you don’t correct this posterior displacement, you will misinterpret as the anterior drawer test positive despite the case is posterior cruciate ligament injury. Actually, you are pulling the leg from posterior to normal, not from normal to anterior. After checking the position, the second point is to make sure the hamstrings are relaxing. Make sure the hamstrings are relaxing by tapping with your hand as shown in figure. Make sure the examiner aware that you have checked the hamstrings. Stabilize the patient’s feet with your body. You may stabilize the patient’s feet by sitting on it. Do not sit with full of your body weight. Grasp the upper part of the tibia with your two hands, your thumbs must rest on the joint line to appreciate the movement of tibia over the femur. Then, pull the tibia towards you. The test can be graded by sliding movement of the tibia on the femur as below. 1+= 0-5 mm, 2+ = 6-10 mm, 3+=11-15 mm, 4+=15 mm This is theory. You are not supposed to mention measurements. Especially in an inexperienced hand, it is difficult to describe exactly. For undergraduates, if you can appreciate mild, moderate or severe it is acceptable (this is an author’s point of view, you may check with your lecturer). A positive test indicates anterior cruciate...

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