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January 4, 1919, Vol 72, No. 1 >
ARTICLE | January 4, 1919

A CASE OF CONGENITAL RADIO-ULNAR SYNOSTEOSIS

JONAS C. KOPELOWITZ, M.D. (St. Louis)
JAMA. 1919;72(1):21. doi:10.1001/jama.1919.02610010027007.
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Congenital synosteosis of the upper ends of the radius and ulna is a rather rare condition. In this deformity there is an osseous fusion of the upper ends of these bones. Feidt1 has reported two cases occurring in mother and daughter, and Kurlander2 has reported a case of unilateral radio-ulnar synosteosis in an 8-year-old boy who gave no hereditary history. These are the only cases reported in American literature, and Feidt has collected about forty instances in the entire literature. Most of the cases showed a strong tendency to follow certain laws of heredity. This was present in Feidt's cases, mother and daughter being affected, with a history of the condition in the grandfather.

In this deformity the function of supination of the forearm is lost. There is no satisfactory treatment. In a case reported by Dawson,3 the patient was operated on five times with fairly good

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