Why is it easier to discolate the shoulder when the upper arm is flexed at the glenohumeral joint rather then extended?
by 
ley lady ley
ANSWERS: 2
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Depends on where in the shoulder capsule the instability is.
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Doughnut is right. Also, it's a simple ball and socket joint. Logic dictates that it will stress even in a normal joint at it's naturally weakest point. The closer to the body (adduction), the more likely it is to pop out of place. Simple, really.
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