0Klumpke's Paralysis:-
Site of injury: Lower trunk of brachial plexus.
Cause of injury: Undue abduction of the arm, as in clutching something with hands after a fall from a height
Birth injury.
Nerve roots involved: Mainly T1 & partly C8
Muscles Paralysed: Intrinsic muscles of the hand (T1)
Ulnar Flexors of the wrist and fingers (C8)
Deformity and position of the hand: Claw hand due to unopposed action of long flexors and extensors of the fingers.
In a claw hand, there is hyperextension at metacarpophalangeal joints and flexion at interphalangeal joints.
Disability: Biceps and supinator jerks are lost.
Complete claw hand
Cutaneous anaesthesia and analgesia in a narrow zone along ulnar border of the forearm and hand.
