question: I am a firefighter, and i know it puts a lot of strain on joints. However over the last month or so I have noticed my the inner most side of my elbow (if extended) appears slightly swollen, kinda "squishy", and is tender to touch as if it was a bruise. However it has not changed.I have also noticed a "knot" on the top of my shoulder that is tender to touch and that my should cracks a lot more, and "pop" in a lot more places then before.