Broken collarbone - Symptoms and causes - Mayo Clinic
3 Ways to Have Prominent Collarbones - wikiHow
Why do some people have such prominent collar bones while others seem to have none? What is the function of collar bones and can some people have none? - Quora
Collar bone is popping out-kind of is this something I should be worried about? : r/lifting
Anyone have one collarbone that pops out? (See my comment below) : r/ehlersdanlos