Fig. 2From: Correlation of knee ultrasonography and Western Ontario and McMaster University (WOMAC) osteoarthritis index in primary knee osteoarthritisA 60-year-old male patient complained of right knee stiffness. Longitudinal plane MSK US at the MCL revealed medial extrusion of the degenerated medial meniscus (asterisk) and a medium-sized femoral osteophyte (white arrowed)Back to article page