Difference between Erb's paralysis and Klumpke's paralysis

Topics	Erb’s or Erb–Duchenne  paralysis	Klumpke’s paralysis
Nerve roots involved	C5 & C6	C8 and T1
Trunk	Upper trunk of brachial plexus is involved	Lower trunk of brachial plexus is involved
Muscles paralyzed	Deltoid , supra spinatus , biceps brachii, brachialis, brachioradialis , supinator and extensor carpi radialis longus	All intrinsic muscles of the hand
Position of upper limb or hand	Policeman’s tip / porter’s tip/waiter’s tip position	Claw hand
Disability	Abduction and lateral rotation of the arm , flexion and supination of forearm is lost	Flexion of the fingers are lost and partially loss flexion of wrist joint Some additional  finding , vision disturb due to loss of  dilatation of pupil and elevation of upper lid
Sensory loss	Along the outer aspect of the arm	Along the medial border of forearm and hand
Autonomic signs	Absent	Present (Horner’s syndrome)
The most commonly involved nerve	The suprascapular nerve, musculocutaneous nerve and axillary nerve	Ulnar nerve
Cause	Difficult childbirth, accident increase the angle between head and shoulder	Childbirth (traumatic vaginal delivery with hand prolapsed, breech presentation ) . catching a branch of tree during accidental fall .( increase angle between abducted upper limb and trunk )
Common / rare clinical condition	Relatively common	It is very rare clinical condition