Anterior suprapatellar fat pad impingement syndrome

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Pain in the anterior compartment of the right knee.

Patient Data

Age: 35 years
Gender: Male

Hypertrophy of the anterior suprapatellar fat pad with edematous infiltration and convex posterior margin. A mass effect is noted on the adjacent suprapatellar recess. No significant joint effusion is seen.

Both menisci, collateral and cruciate ligaments are intact.

Case Discussion

Hypertrophy with edema and convex posterior margin of the anterior suprapatellar fat pad are considered the main MRI findings of the suprapatellar fat pad impingement syndrome, which is generally considered a diagnosis of exclusion. 

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