Unclear: I'll say that "in front of the clavicle" close to the breastbone is the sternoclavicular joint. The pectoralis major muscle attaches to the "front" of the clavicle, but i've never seen a strain of that muscle hurt in that location. Other small ligaments and muscles attach to the clavicle, but i just can't imagine anything that causes pain only when sitting.
Answered 4/13/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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