Policeman’s tip hand is seen in
ERB'S PARALYSIS:-
upper plexus injury.
Caused by forceful widening of the angle between the head and shoulder which may occur by traction of arm during the birth of a child or by fall on the shoulder.
Involves upper trunk - C5, C6 roots.
Leads to typical deformity in the limb- policeman's tip hand/ porter's tip hand. The arm hangs by the side, adducted and medially rotated, forearm is extended and pronated.
1. Adduction of arm due to deltoid paralysis.
2. Medial rotation of arm-paralysis of supraspinatus, infraspinatus and teres minor.
3. Extension of elbow- paralysis of biceps brachii
4. Pronation of forearm- paralysis of biceps brachi
5. Loss of sensation over outer aspect of arm due to C6 spinal nerve involvement.
Erb's palsy
Klumpke’s paralysis
Axillary nerve injury
None of the above
Erb's palsy