Klumpke's paralysis results from lesion of
Ans. b (Lower brachial plexus injury). (Ref. B & L, Surgery, 22nd ed., 380)Klumpke's paralysis- Site of injuryLower trunk of brachial plexus.- Cause of injuryUndue abduction of arm, as in clutching something with the hands after a fall from height or sometimes in birth injury.- Nerve root involvedMainly T1 & party Cg- Muscles paralysed- Intrinsic muscles of the hand (T1).- Ulnar flexors of the wrist & fingers (C8)DeformityClawhand due to unopposed action of the long flexors & extensors of fingers.In a clawhand there is hyperextension at the metacarpo-phalangeal & flexion at the interphalangeal joints.- DisabilityCutaneous anesthesia & analgesia in a narrow zone along the ulnar border of forearm & hand.- Horner's syndrome-ptosis, miosis, anhydrosis, enopthalmos, & loss of ciliospinal reflex may be associated. (MH'05, AI05, Kar'05)
Peripheral Nerve Injuries
Upper brachial plexus injury
Lower brachial plexus injury
Radial nerve injury
C5, C6 and C7 injury
Lower brachial plexus injury