Erb's palsy

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Erb's palsy (erbz) n. weakness or paralysis of the shoulder and arm caused by injury to the upper roots of the brachial plexus during traumatic childbirth. The muscles of the shoulder and the flexors of the elbow are paralysed and the arm hangs at the side internally rotated at the shoulder. [ W. H. Erb (1840–1921), German neurologist]

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Erb's palsy

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