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Radio-ulnar synostosis is a rare congenital bony union of the proximal ends of the radius and ulna, the lower ends being free. Supination is greatly impaired, the hand being held in constant pronation, but the condition is painless.
REPORT OF A CASE
H. C., a 7 year old boy, was admitted to the Duke Hospital on Jan. 2, 1939. The family history and past history were irrelevant. Since the age of 2 years the child's movements had been awkward when he took any article in his hands, and he could not turn the palms upward. There was no interference with flexion at the elbows. Except that both forearms were fixed in almost complete pronation and could not be supinated, the results of the physical examination were essentially negative. The child was able to write fairly well, but he had considerable difficulty trying to supinate the forearms to receive articles with
CROSS AR. CONGENITAL BILATERAL RADIO-ULNAR SYNOSTOSIS. Am J Dis Child. 1939;58(6):1259–1260. doi:10.1001/archpedi.1939.01990110123009
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