Developmental Disorders Flashcards
1
Q
What is the commonest obstetric brachial plexus palsy?
A
Erb’s palsy
2
Q
Which nerve roots are affected in Erb’s palsy?
A
C5 + C6
3
Q
Which muscles lose their motor function as a result of C5-C6 nerve root injury?
A
Deltoid Supraspinatus Infraspinatus Biceps Brachialis
4
Q
What is the classic posture sign seen in Erb’s palsy?
A
Waiter’s tip posture
5
Q
Which nerve roots are affectedd in Klumpke’s palsy (another obstetric brachial plexus palsy)?
A
C8 + T1
6
Q
Which muscles are damaged in Klumpke’s plexus?
A
Intrinsic hand muscles
Wrist/finger flexors
7
Q
What is the aetiology of obstetric brachial plexus palsy?
A
Vaginal delivery - large babies/ twins - shoulder cannot pass below pubis
