Most stem-cell products marketed for shoulder pain aren't actually stem cells, and there's no evidence they regenerate rotator-cuff tissue. Some bone-marrow preparations may slightly improve healing, but likely through anti-inflammatory effects or placebo. Skip the thousands-of-dollar injections.
Stem cells for shoulder pain sound really promising, but here's what we actually know. First off, many of these are not actually stem cells. There's a wide variability what's actually injected into people's shoulder or knee for that matter. Second, there's limited to no evidence that actually stem cells can regenerate rotator cuff tissue. There is, however, some evidence that shows that if you inject cells from the bone marrow and concentrate them, that can perhaps improve the rate of rotator cuff healing. Probably what stem cells do is work on inflammation and most likely a placebo effect. So before you spend thousands of dollars of stem cells, save this post.
