Last reviewed dd mmm yyyy. Last edited dd mmm yyyy
It is not uncommon for there to be difficulty distinguishing traumatic from congenital radial head dislocation. Factors that can help in the diagnosis include:
Feature | Congenital dislocation | Traumatic Dislocation |
History of trauma | occasionally | always |
Family history | often | none |
Bilateral | common | rare |
Other anomalies | common | rare |
Radial head | Dome shaped for anterior dislocations, narrow for posterior dislocations | Normal shape with concavity |
Ulna | shortened; may be bowed | normal |
Capitellum | hypoplastic or absent | normal |
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