Case: Lower limb radiograph #11989023
Lower limb Beginner
Read this radiograph systematically before revealing the answer. What is the main abnormality?
Image: Hellerhoff via Wikimedia Commons · CC BY-SA 3.0 · source · resized and converted to WebP
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Answer: Patellar dislocation
What to look for in patellar dislocation
- The patella lies lateral to the femoral trochlea instead of within it.
- After reduction, look for an osteochondral fragment or a medial patellar avulsion.
- A tangential (skyline) view shows patellar tracking best.
Description by the image author (may be in another language): Patellaluxation im Röntgenbild. Rechtes Knie, tangentiale Aufnahme. Der Femurkondylus ist nicht komplett mit abgebildet.
Educational case. The diagnosis comes from the image's documented source; the "what to look for" list describes the condition in general and is not a report of this individual image.
