Medial patellar plica test

With the patient supine, the examiner first applies pressure with the thumb over the inferior and medial apsect of the patellofemoral joint to interpose the medial plica between the medial patellar facet and the medial condyle. While maintaining this pressure, the knee is passively flexed from 0 to 90 degrees. Pain in extension that is relieved at 90 degrees of flexion constitutes a positive test.