Fig. 2
Right knee radiograph: suprapatellar synovial bursa opacification. The right knee radiograph displayed opacification of the suprapatellar synovial bursa, which is indicated by the arrow A in the figure, along with the narrowing of the medial compartment tibiofemoral joint in the right knee, indicated by the arrow B in the figure, and clinical picture, without any other alteration, indicates joint effusion, synovitis and active arthritis