Moderate effusion with mild synovial thickening involving the left suprapatellar recess. Collection with mobile internal echoes in the anteromedial proximal leg extending from the subcutaneous plane to the tibial cortex and plate screw. Collection about 125 (craniocaudal) x 50 (axial) x 20 (anteroposterior), 66 cc. No collection along the anterolateral proximal tibial plate screw fixation. Reverberation artifact due to plate and screw fixation.