Persistent anterior knee pain.

摘要

A 20-year-old military recruit presented for follow-up of anterior knee pain. Previously, he presented with three weeks of right knee pain without trauma, swelling, locking, or instability. At that visit, he was referred for physical therapy, but the knee did not improve during treatment. On recent examination, the patient had a positive "theater sign" (i.e., knee pain upon arising after prolonged sitting), positive patellar compression and inhibition tests, stable ligaments, pain with McMurray's test, and tenderness of the medial tibial plateau. Radiography was performed (Figures 1 and 2).