Male, 26 years old. Fall at work on March 1 2016 and injured his right leg. Unable to bear weight for any length of time-- knee is unstable. MENISCI: The menisci appear normal.ARTICULAR CARTILAGE AND BONE: There is heterogeneous signal intensity within the articular cartilage of the medial facet of the patella, likely representing full-thickness degeneration with underlying subchondral cyst formation. The remainder of the articular cartilage appears normal. The remaining bone marrow signal is normal.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: There is a small amount of fluid in the joint, but no large effusion.
Degeneration of the articular cartilage of the medial facet of the patella, but otherwise no findings to account for the patient's pain.