Fig. 3.

Hughston's plica test. Patient positioning: supine with the knee fully extended and relaxed. The examiner stands on the affected side, placing one hand around the heel and the palm of the other hand over the lateral border of the patella with the fingers over the medial femoral condyle. Action: the examiner flexes and extends the patient's knee while internally rotating the tibia and pushing the patella medially. Positive finding: pain and/or popping in the knee is indicative of an abnormal plica. It is typically in the range of 30 to 60 degrees toward extension.