MLF
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My anatomy is not too good guys, can someone please help me with this muscle. Now, FA says it aBducts and depresses, so that should be down and in rite??? now a lesion would show what, down and out????? I really appreciate the help. Thanx
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| mani
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R sup Oblique will move R eyes to right, down, and rotates the eye ball inwards so that the superior pole will come to lie on the medial side (intorsion). Lesion will cause extorsion, weakness of downward gaze and diplopia
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| mjl1717
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I also find the S.O. tricky/and possibly raising a little anxiety under an exam situation. [Mani i have no problem with what you said] Ill try to simplify it more for everyones benefit.
1)S.O. turns eye down and laterally with medial rotation(inserts in sclera
behind equator) **easier- down and out
2)***************recent paralysis of right S.O. :arrow: :arrow:
:arrow: looking straight ahead diseased eye goes upward/inwards***
*So its down/out versing upward/inward
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| mdwannabe
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Just a suggestion, before memorizing the function of any muscle, especially in the eye, just look at the atachment and the course it takes from origin to insertion, then imagine pulling on it...and you have got 99% of all functions.
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| mjl1717
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Great mdwannabe -Thx for enlightening "inner visions" ( now you motivated me and perhaps others to paint a golf ball like an eye and attach wires(muscles) to it!
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| mdwannabe
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:-) you can do it your head, no physical objects. :-) But golf sounds good :-)
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| nadia_usmle
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so i think inferior oblique makes eye upward and out ..i always get confuse when i see this question..i am asking this because last night i was doing questions..there one ques came .like the action of inferior oblique muscle..i pick upward and out ..but i got wrong..the ans was upward and medially..any idea..
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| MLF
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edited
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| mdwannabe
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MLF..think again...ATTACHMENTS!!!! it runs on medial surface of orbit passed the mid virtical equator of eye, then hooks to eye from the back above the horizontal equator... so if you mentally pull on it ...the eye will go OUT and UP...also will roll towards temporal side.
Inf obl... take eye OUT and UP ...
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| MLF
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Thanx mdwannabe, I can never get these muscles, but after you explained it and i also opened up step up, if anyone has it, it gives the eye with all the msucles of the eye and attachments, so its easier to follow what mdwannabe said with that diagram. I just needed to see a really good picture of it I guess, and step up does an excellent job. Nadia your rite, ignore my post, as mdwannabe said, inf oblique should be out and up.
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| mdwannabe
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like I said...just understand the attachments...and metally pull those muscles...U ll all get it! Promice!
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| mani
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imp to remember that oblique muscle are interested behind the equator and recti infront of it
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