Erb-Duchenne palsy
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Erb-Duchenne palsy is a traction injury of the superior trunk of the brachial plexus (C5,C6) which results in a limp shoulder (paralysis of abductors), internally rotated shoulder (paralysis of lateral rotaters), and pronated forearm (paralysis of biceps). May also have flexed wrist if there is C7 involvement. Commonly is a result of shoulder trauma during delivery.
It was first reported by French and German neurologists, Guillaume Duchenne de Boulogne and Wilhelm Heinrich Erb in the late 19th century.