i have a question what is that bone thats by your neck like on top of your shoulders. i have had physcial therapy for my shoulder for like 2-3months now and my shoulder still cracks and feels like it is unalign kind of. and the side with the bad shoulder that bone on top of the shoulder is dont pop up as much as my other side. is it possible that that shoulder dont have enough muscle there thats why it dont feel align and cracks ? or it probably is like fractured or some sort ?