First thanks guys for the inputs to ALL of you and also making me understand this is not some weird mutant aberration.
I think it is 100 times more likely, that you have an undiagnosed shoulder or wristproblem, that is now being aggravated, by playing pool, rather than a problem caused by arm position.
Carpal tunnel or torn rotator cuff would be the most likely.
Kind of like the nursery rime. See below. Example. A friend with a bad back ended up with hip replacement after ignoring his back problem. Just guessing they were related. Did you do any reparative work or sports?
Well, I have had pretty much every injury you can imagine as an athlete who has played every sport and still teach and play golf and tennis among other cardio type exercises. I doubt I have a tear there since I never had any debilitating injury, but most likely arthritic or strains, possible micro-tears. I felt a little pain while playing golf a couple of weeks ago, but that was AFTER I experienced this pain while playing pool in this league for the first couple of months... i.e., the pool brought it on, the golf exacerbated it, and now the pool is aggravating it.
Not being nosey, but how old are you? A very large percentage of folks see some degree of arthritic change as we age. Shoulder muscles (rotator cuff) tendons run through a very small "tunnel". As your shoulder moves toward, and past, 90 degrees of flexion, that tunnel becomes even more narrow.
Unless you are getting up into 70's or 80's, any RC tear would be uncommon in the absence of a traumatic injury. However, impingement related tendinitis, bursitis, and/or postural muscle fatigue soreness are commonly the result of overuse.
A bit of free med advice that I used to tell my patients is when you get a new pain (outside of a traumatic event or injury) conservative treatment (r.i.c.e., activity modification, stretching, OTC NSAIDS if doctor allowed) is ok for a short period, but any pain that persists for more than a week or so probably deserves to be evaluated by your physician.
I will mention this to my doc as I will go see one soon for 10 other problems with my body, and maybe taken x-ray and MRI as well if needed. I am soon to be 43, overall healthy, still athletic as mentioned above, but sadly I think I need to get back to not just playing golf and tennis, but also working out, lifting, and getting some cardio in, etc.... I think we as get older we dismiss the strengthening part and I think if I included some pushups, dumbbells, and other weight training, this may not be happening at all. I havent done any of that in years now, figured the sports will keep me in shape. Probably bad idea.
I had left shoulder pain for a long time. Couldn't stretch my arm out or raise it over my head. Had a ultra-sound and found out I had 6 teard in my shoulder. Had a proceder dome called PRP(platelet-rich-plasma). Read about it .It uses your own blood. It was excrutiating pain to stretch my arm out abd to raise it over my head. It was like a miracle happened. Took about 3-4 weeks. Not that expensive.
Intriguing... I think I heard of something like this when I was giving blood a while back, where they said giving blood and platelets once a while is good for you... i wonder if that is related, like help eliminating toxins etc.....
This is the problem!
You need to be able to raise your bridge hand from the table while in your stance.
Well actually I have been FORCED to do this.. to me necessity was the mother of a new stance invention. There was just too much pain, so I had to stick my left leg out more forward and sit down more on my legs and basically put no pressure on my left (bridge) hand, which no one told me before. I had a playoff match today and exercise that as well as last week and I think the pain is alleviating just a bit... definitely not getting worse. Also haven't played golf in a few weeks so that helps too.