I'm actually battling one of these this week in my left delt. It's a tendon / ligament that you've hit.
I wouldn't exactly call it PIP either, it's not painful, just lumpish in that you know it's there, and it lasts quite a while. Sometimes they stay with me for weeks. Dulled down heaps of course, but if you move a certain way you can feel the pressure there.
I wouldn't exactly call it PIP either, it's not painful, just lumpish in that you know it's there, and it lasts quite a while. Sometimes they stay with me for weeks. Dulled down heaps of course, but if you move a certain way you can feel the pressure there.