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Whenever you have an elbow included, ALWAYS check the radial head. How’s the radial head? how about WHERE is the radial head? It’s not there.
Answer: Congenital radio-ulnar synostosis
A congenital growth disturbance where the proximal radius is fused/originates from the ulna. The proximal 1/3 of the forearm is the most common.
An aunt Minnie to through in the back of you mind.