Flashcard: klumpke's palsy | mmb
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brachial plexus
Falling out a tree damages C8/T1
(affects median nerve)
(due to KO of median nerve which
innervates wrist flexors on the
dorsal side of the hand )
Unopposed wrist extension Ulnar claw
(lumbricals normally flex
MCP, extend IP)
–>(mainly 1&2) KO’d = you
get
• FLEXION OF IP &
• EXTENSION OF MC
= CLAW HAND.
This is a passive sign – ie its like this in the
resting state)
FYI: Similar symptoms occurs when ulnar
nerve is damaged in a medial epicondyle
fracture of humerus – you get an ulnar claw
in the 4
th and 5
th
fingers due to lumbrical
damage. But don’t confuse these two
conditions – just to point out their
