My 17 yr. Old son is a avid baseball player since was 2. So has had very bad pain on his upper arm and inside of elbow after playing game. He does not pitch anymore, but as a little leaguer that s all he did. To much im sure but was very descent for his age. As a result he started plays third for his high school varsity team, but would always be in great pain after every games. And so 3 games ago as he was making a throw to first base he said he felt a rip or tear in his upper arm almost to shoulder and felt a hard pop, and intense pain. I have also noticed his collarbones are not even. His catching side is sticking up higher than his throwing arm. He is a righty to. He can still raise his arm without pain but not to throw ball in ususal form. Says pain is intense if he tries to throw over hand. Can throw side-arm tho. And can still hit.