Erb’s palsy is first described by Wilhelm Erb, this condition is an injury (paralysis) to the upper part of brachial plexus (or pressure over the Erb’s point). Erb’s palsy is caused by the direct injury to the neck and shoulder from birth as seen as birth injury. The most commonly root involving in the Erb’s palsy is C5–C6 nerves.
Erb’s palsy is the most severe type of nerve injury during Childbirth process, caused when an infant’s neck is stretched to the side during a difficult delivery. When the nerve of erb’s point injured, Position of unilateral shoulder is abducted and internally rotated, elbow is extended from arm is pronated and wrist is hypoflex. and deformity is called: