a type of obstetric palsy in which there is paralysis of the muscles of the upper arm and shoulder girdle (e.g., deltoid, biceps, brachialis, and brachioradialis, and sometimes the infraspinati nad serratus anterior muscles) caused by a lesion of the upper trunk of the brachial plexus or of the roots of the fifth and sixth cervical roots. SYN: Duchenne-Erb paralysis, Erb paralysis.
