Wetread Case 28

Hx: Trauma 3 weeks ago with new knee pain

Diagnosis? And be specific!

Feel free to answer with professionally appropriate gif responses only. No spoilers.
wetread.org #WetreadCow #FOAMrad #FOAMed #radres #errad #mskrad #orthorad Image
Answer: Pellegrini-Stieda Syndrome

Here's the X-ray and CT from 3 weeks ago.

New X-ray shows development of calcification/ossification near femoral attachment of MCL and the CT 3 wks ago shows thickening/injury to the MCL. This is all c/w the classic Pellegrini-Stieda lesion ImageImage
So we have 2 entities:

1) Pellegrini-Stieda lesion = the post-traumatic calcification/ossification classically near the femoral attachment of the MCL

2) Pellegrini-Stieda Syndrome = Pain @ a developing P-S lesion. Typically seen about 3-6 wks post injury.
Often we see these incidentally months - years after the trauma. Mention it, sounds smart and move on.

However, if the trauma is recent, consider symptoms and P-S syndrome.

This pt was symptomatic on the medial side of the knee c/w Pellegrini-Stieda Syndrome

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