Season 8 Case 28

Season 8 Mar 9, 2020

Hx: Worsening knee pain. H/o trauma 3 weeks ago

Answer: Pelligrini-Stieda Syndrome

Calcification at the femoral insertion of the medial collateral ligament typically seen a few weeks after the original trauma.

There are 2 distinct entities:

Pelligrini-Stieda lesion = the calcification itself. Can be connected or not to the femoral condyle and can be small or very largeĀ  - typically asymptomatic (more common)

Pelligrini-Stieda Syndrome = when patient is symptomatic at the site of this calcification (presumably due to the inflammatory nature)

Here is the X-ray and CT from 3 weeks ago:

No calcifications at that time. And note the thickened MCL on the CT c/w injury



Professor of the Darkroom Arts

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