posterior drawer sign, an orthopedic test used to determine laxity of the posterior cruciate ligament of the knee. The patient is positioned with hips at 45 degrees and knees flexed at 90 degrees while the examiner stabilizes the foot and pushes the tibia backward. Also, with both the hips and knees flexed at 90 degrees, the examiner holds the heels together and observes the knees to compare the relative posterior sag of the tibia.
