Talk:Superior oblique muscle

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NOTE: I have now changed the article to clarify the points I raised earlier (see directly below).--90.203.20.14 (talk) 11:57, 7 April 2010 (UTC)[reply]

Please correct the statement that the superior oblique laterally rotates the eye - isn't that the action of the inferior oblique? See discussion point in section below please. 90.203.20.14 (talk) 17:25, 6 April 2010 (UTC)[reply]

--> Ah, I see why this has been written - please see quote below from later on in the article - but please can it be corrected/clarified because it misleadingly seems to refer to extorsion when it says "lateral rotation" in the first paragraph of the article:

"the tertiary action is abduction (lateral rotation)."--90.203.20.14 (talk) 17:31, 6 April 2010 (UTC)[reply]

--> I spotted another contradiction - the primary actions described differ in the introduction and in the "Actions" section - the introduction states, "whose primary action is downward, lateral rotation of the eye", while the next section says intorsion.--90.203.20.14 (talk) 17:37, 6 April 2010 (UTC)[reply]

Please see the statement below for the actions of the superior oblique and refrain from changing the article. As it stands, my last edit is correct. Matt641 (talk) 11:59, 1 July 2008 (UTC)[reply]

Actions of the superior oblique

The first paragraph states that a prevalent error found in many clinical texts is that the, "superior oblique moves the eye down and medially (adducts)". This is untrue. Checking several major texts (Kumar and Clark 6E, Davidson's 20E, Macleod's 11E and the Oxford Textbook of Medicine 4E), none of them explicitly state that the action of the superior oblique is adduction. The referenced article is poor as it involved misinterpretation of clinical texts which correctly state that examination of CNIV requires adducting the eye and looking down, reasons for which are explained in the article. The authors took this as the stating that the action of the superior oblique was to adduct, which is of course incorrect. I will edit the article to reflect this if there are no objections, as I am sure it is confusing hundreds of medical students. Matt641 (talk) 02:34, 9 April 2008 (UTC)[reply]

NOTE: The first paragraph also says that the superior oblique laterally rotates the eye. I (another viewer) read that it medially rotates the eye - i.e. intorsion. 90.203.20.14 (talk) 17:25, 6 April 2010 (UTC)[reply]

Comments

The picture is incorrct in that it states that the action is down and OUT, but it should be down and IN, toward the nose. It is correct in the firs paragraph of this article. There is no edit available or I would have fixed the pict. Thanks. Lesions of the trochlea cause the eye to go up and out due to the other muscles still working and having tention.—The preceding unsigned comment was added by LittleSucker (talk • contribs) 03:00, 29 June 2006 (UTC).[reply]

The SO's secondary actions are down and out; I have made the appropriate change to the first paragraph. With a fouth-nerve palsy, the affected eye in primary gaze usually goes up (not necessarily in or out). -AED 04:59, 29 June 2006 (UTC)[reply]

Printable version looks bad

The printable version of this page looks really bad with the picture box dominating the layout. (When viewed in Firefox 2.0.0.9) —Preceding unsigned comment added by 217.10.60.85 (talk) 09:31, 6 November 2007 (UTC)[reply]

Origin

In many medical anatomy books the origin for the Superior Oblique is listed as the body of the sphenoid bone, superior to the optic canal, NOT the annulus tendon. Our anatomy professor made this very clear, and our cadaver just happened to show this as well. :-).

Also regarding the comments below about the action of the superior oblique; the action is to abduct, depress and medially rotate the eyeball. It's insertion on the superior posterior lateral surface of the eyeball can explain this. However, the TEST for the superior oblique (per physical/neurological exam) is to have the patient move his eye medially, then down. This is because once the eye is turned medially, the only muscle that can move it down is the superior oblique.

Chmeyer (talk) 04:21, 1 February 2009 (UTC)[reply]

Agree & changing the origin. For citation see (one of many) Grant's Dissector 16th Edition, p. 283, and any number of sources (including other Wikipedia entry) that confirm annulus tendon aka common tendinous ring is the origin only for the 4 lateral muscles. — Preceding unsigned comment added by 67.84.210.92 (talk) 16:49, 22 October 2016 (UTC)[reply]