MRI
Fluid collection is deep to the sartorius, gracilis, and semitendinosus tendons related to pes anserine bursitis.
Moderate joint effusion is noted.
Cartilage fraying and loss associated with subchondral edematous changes are seen at the middle weight-bearing of the medial femoral condyle.
Marginal osteophyte formation also is noted.
Chondromalacia patellae as cartilage thinning associated with subchondral edema and cystic changes are seen at the mid to lateral facet joints of the patella.