beetles
Forum Newbie
Topics: 6
Posts: 11
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Hello does anybody know how to remember spinal root innervation for upper limb? Why
wrist flexion --C6, C7, C8, T1
elbow flexion -- C5, C6, C7
elbow extension -- C6. C7 C8
arm abduction -- C5, C6
deltoid semsatopm -- C5. C6
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| JavMD
Forum Junior
Topics: 5
Posts: 77
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I dont know of any mnemonic per se for it, but it shouldnt be so hard to memorize these.
First thing, brachial plexus is from c5 to t1, so the starting point is c5.
There is a progression, do you notice it? At the top there are 2, then 3 at the elbow and 4 at the wrist.
Deltoid sensation = arm abduction, top therefore 2 nerves, starting point is c5 then you think c5 and c6.
Wrist flexion is everything except c5.
the tricky is elbow, you have 3 nerves so, small go first, flexion is smaller word starts at c5 plus 2, therefore it ends at c7 and for extension just go one down.
I dont know if this helped you, but this is the way I would learn it.
Anyways, these doesnt seem so high yield. Try to correlate these with clinical situations, learn what would give you a claw hand, popes blessing, etc. As well as the clinical reflexes and the muscles that inervate each nerve, for example radial nerve innervates the BEST.
Good luck.
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| beetles
Forum Newbie
Topics: 6
Posts: 11
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Thank you so much JavMD. Your way of explanation is great!!
The reason why I am asking is because there is one q in Qbank about one patient who has all these symptoms, and the q is -- which nerve root is damaged? So you have to list all the roots, and find out the common one.
Thanks for reminding the high yield. I was reading 2005 version of FA, and I dont think it mentions BEST muscles by radial nerve. Anyway, I checked 2008 version of FA, it's there! To memorize again, BEST -- brachioradialis, extendor of wrist and digits, supinator (to hold a soup) and triceps.
Thanks again!
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| JavMD
Forum Junior
Topics: 5
Posts: 77
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No problem man,
Take care.
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| brainzz2hot
Forum Newbie
Topics: 0
Posts: 1
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You guys are really really fantastic. Keep it up.
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| dr.aki
Forum Newbie
Topics: 1
Posts: 11
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beetles, JaV MD is right about you thinking about the clinical correlates as it relates to th brachial plexus. That is definitely high yeild.
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