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NBME 23 Answers

nbme23/Block 2/Question#47 (reveal difficulty score)
A 65-year-old man is scheduled for physical ...
Medial (internal) rotation 🔍 / 📺 / 🌳

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submitted by seagull(1745),
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iThs tetapin si trgpiinp .blsla eetBrt do a durg crnese whcih eessm u.bivoos

submitted by guillo12(52),
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The ussaibpucrlas mslceu is evyr oraitmptn for eth Ienranlt tontorai of the Teh reitnaln ioatornt pposstru eht pperu arm dgunir cdatoubin and cdodtauni.

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arcanumm  I got this wrong too, but I think the exercise of internal rotation makes sense because it will isolate the muscle (without assistance by teres minor for adduction). +6  
tiredofstudying  The subscapularis assists in medial (internal) rotation and adduction, but the teres minor also assists in adduction, so the best choice to isolate the subscapularis would be internal (medial) rotation. Choice E +2  
thotcandy  @tiredofstudying teres major also internally rotates so it wouldn't really be isolated either. I guess Tmajor isn't relevant cuz it's not a SITS muscle? Still a stupid question. +1  
jaramaiha  I just remember subscapularis muscle function by thinking that Subs go into the sea (or internal/medially rotate). Also the only muscle set that happens to perform internal/medial rotation in the rotator cuff set. +  
skonys  Writer 1: How many shoulder/rotator cuff questions should we put on this exam? Writer 2: Yes. +  

submitted by nicsar(1),
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b:diocna)tau -ueruncdui-ipetsrsst-soaettsirprspaald rnarteoi

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thotcandy  teres major also internally rotates? It's attached to the medial lip of the humerus +3  
neovanilla  teres minor externally rotates (+ad-duction) +  

submitted by syoung07(42),
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submitted by fenestrated(32),
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taWh pust raenlint aioonttr rveo cdtnaiou?d bpacluaSuisrs lsmeuc eods hobt

smc213  probably because the subscapularis m. is the only SITS muscle that does internal rotation & adduction along with the teres minor m. action being adduction & external rotation. +1  

submitted by abhishek021196(89),
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