knight
Forum Senior
Topics: 16
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in a posterior shoulder dislocation, which muscle, located posterior to the glenoid fossa, would be injured?
a. pectoralis major
b. pectoralis minor
c. coracobrachialis
d. teres major
e. latissimus dorsi
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| Doc2378
Forum Guru
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Teres major?
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| cyra
Moderator
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I'd go with Teres major too
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| Shakeels
Forum Guru
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yes its teres major, all of you are right.
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| knight
Forum Senior
Topics: 16
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well, from what i know, in a posterior dislocation, the main muscles that would be injured are the teres minor and infraspinatus. Neither were options, and that confused me a little during the test. From what i later read, the teres major is not significantly affected in such a dislocation, but the latissimus dorsi is, remembering that the muscle per se is posterior, albeit it has an anterior insertion in the intertubercular groove. that's what my sources tell me, anyway..hehe.
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| Doc2378
Forum Guru
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awww...shucks!...lost another one to origin- insertions!
Thanks, Knight!
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Courage does not always ROAR. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow" - Mary Anne Radmacher
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| cyra
Moderator
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Posts: 844
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darn it!!!
Thanks nonetheless knight!!
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| Shakeels
Forum Guru
Topics: 27
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Well guys, did any one remember LADY B/W two majors, its Latissimus dorsalis b/w pectoralis major and teres major in the HUMERUS. And if their is any posterior dislocation then their should be dislocation of posterior muscle, not the muscle is the middle.
what do you think???
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| knight
Forum Senior
Topics: 16
Posts: 46
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Thanks for the discussion guys! i agree the latissimus dorsi inserts anterior to the teres major, but does so by kind of spiraling around it, and a posterior dislocation would pinch the latissimus tendon between the teres major and long head of triceps tendons, pushing it into the quadrangular (lateral axillary) space, in my opinion causing more damage than to any other individual muscle.
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| Shakeels
Forum Guru
Topics: 27
Posts: 468
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All right, I will see some text book for it, but you are right about spiraling of LD. I have no doubt it.
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| study_ing
Forum Fanatic
Topics: 180
Posts: 2,511
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any anatomy genii?
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