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Six-year-old boy with congenital right arm weakness and obstetric subspinous dislocation

(Source: Duchenne [de Boulogne] GB. Paralysies obstétricales infantiles des membres supérieurs avec ou sans fractures, luxations ou autres complications. In: De l'électrisation localisée et de son application à la physiologie, à la pathologie et à la thérapeutique par courants induits et par courants galvaniques interrompus et continus. Paris: J B Baillière, 1872:353-67. Translation and figure restoration and editing by Dr. Douglas J Lanska.)