erb's palsy

Definition

Birth injury of brachial plexus

Epidemiology

R > L 

1 / 1000 live births

1 in 10 of these develop significant impairment

Recent increase due to bigger babies / DM

Aetiology

Usually secondary to traction

1.  Big baby / maternal DM / > 4000 gm

2.  Breech

3.  Prolonged / difficult labour