Small knee joint effusion.
No meniscal tear. Cruciate and collateral ligaments are intact.
The quadriceps tendon is intact. Proximal patellar tendon high signal and swelling. Adjacent fluid and oedema of the anterosuperior Hoffa's fat pad. Inferior patellar pole bone marrow and subperiosteal oedema; possible avulsion fracture at the inferior pole. Prominent inferior patellar pole oedema with no chondral injury identified. Articular cartilage of the patellofemoral compartment is preserved. Patellar height is normal.
At the distal femoral metaphysis posteromedially there is subperiosteal oedema with a high signal of the medial gastrocnemius insertion.