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Hi Tim, > Any time I dive for extended periods at deep depth (deep being 190+ up to 325) > I seem to get a groaning little achy shoulder pain within about 30 minutes of > the dive (last week as I got to my 30' stop after 250 for 15). The pain goes > away usually within 3-6 hours. These pain comes on mix or air, and on air > even after completing all the required deco stops....generally all the dives > have bottom times over 8-10 minutes that cause the symptoms. > > Could this be a small amount of nitrogen (or He) forming bubbles in the torn > vessels and scar tissues in the shoulder? [snip] > deep diving. I'm just wondering if anyone has a good explaination, or > has a similar experience with any other muscle/tendon/bone injuries. I'm not a "medical type", but I'll share with you my own experiences. I have a similar "trick" shoulder that sortof serves as an indicator that I've been a bad boy. For me it doesn't happen after every deep dive - only certain profiles and only on air. I think the original insult to my shoulder was a DCI hit many years ago. The symptoms are EXACTLY as you describe, and last for the same period of time. When I was recovering from my serious CNS hit, my doc (Dr. Bob Overlock) explained to me that one reason I was more likely to get bent again, and if I did get bent again it would be CNS, was that I had scar tissue on my spinal cord. Since scar tissue tends to get very low perfusion, it acts as an "ultra-slow" tissue, which may not be accounted for by decompression algorithms, and hence, may be a good place for bubbles to form. My "trick" shoulder acts up only after profiles which "pump up" slow tissues, so it makes sense. Like I said, I'm not a medical type, so I look forward to hearing from others on this forum if what I described above is consistent with medical understandings of things. Aloha, Rich deepreef@bi*.bi*.ha*.or*
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