Seems like the pain is coming from my rear delt, somewhere in the area where it connects to my humerus, and I’ve also have pain in the upper triceps, and movements that aggravate it also cause pain down the outside of my arm, pretty much following the track of my humerus, that immediately subsides by ceasing the offending motion, but the posterior deltoid/upper tricep pain remains.

Noticably painful movements that I’ve eliminated thus far are the Jerk, Push Press, Strict Press, HSPU (static handstands seem to be ok), and back squats.   Pushups are fine as long as I keep my elbows tucked and my hands at shoulder width and no wider.  The worst for me now is if I raise my arm in front of me 90 degrees, bend my elbow 90 degrees, and then externally rotate my arm, when I get into the last 5 or 10% of my ROM I get an intense pain in the area I describe and it also feels like something is obstructed. 

I also had pain in the outside edge of my scapula, but I’ve been working with the ortho at our box and he’s been having me do scapular stability exercises, and that pain has gone away.

My other, right, arm is completely fine.  I do have an old injury from football in my left shoulder that was never treated and has recurred maybe a half dozen times or so in the last 18 years, previously diagnosed as instability and impingement, and I had a really positive result from PT 2 years ago, that pain was completely different, and prior to whatever has been going on recently, has never felt better.

I’m at the point where I pretty much won’t use my left arm at all during our WODs, I’m reluctant to stop training altogether as I’m in the best condition I’ve ever been in.

Also, I hurts at night while  “sleeping”.  Even if I’m lying on my right, unaffected, shoulder, if I need to adjust my left arm at all it hurts like hell, if I get up, sit or stand, it feels a lot better.  Early on when I wasn’t really paying attention to the problem, I’m positive that it spontaneously (the left shoulder) reduced while lying on my right side.  There was a very audible clunk as my arm, I’m assuming, fell back into my socket.  After which it felt good and I went back to training as is normal.  

Additionally, it seldom hurts at the box, I’ll get that tight sensation down my humerus if I’m doing something that will aggravate it and I’ll lay off, but it rarely screams at the box, it’s not until later I know I have to add another banned movement to the list.

So for now, I’m switching to one arm bandit mode for our WODs, I’m stretching my pecs, doing my scapular stability exercises, smashing my T Spine… stretching my lats

Any inclinations of what might be going on are appreciated.  Thanks