What does the PT world think of prolotherapy??
Well, that's a bit of a loaded question with many answers ;)
First of all, there are no good, peer-reviewed (in high-impact journals) randomized controlled trials that show that it is effective. This is why insurance companies won't cover it.
Many people and clinicians swear by it…but so far I have yet to be convinced. Treating tendon pathologies is very difficult, again because of a lack of good blood supply and a rather significant lack of understanding as to what is actually wrong with the tendon itself. We used to like to inject cortisone into them (and unfortunately some clinicians still do that…) thinking that it was "inflamed," which it is not. Numerous biopsies and histological studies have found NO inflammatory cells…the tendons seem to degenerate for some reason.
The idea behind prolotherapy is to actually induce a bit of inflammation into the tendon to kick start a healing process…which in theory is still somewhat iffy because we don't know why the tendon degenerates in the first place. PTs used to use aggressive, painful massage to try to increase blood flow for the same reason, with no demonstrable effects (except for my favorite: I KNOW it works…)
I think there is a lot of work going on to figure out how to deal with tendinopathies and if you can easily afford to pay for prolotherapy, and none of the other treatments (particularly eccentric loading exercises) have helped, then by all means give it a try. Its certainly better than having sie orthopod hack away at your tendons. I'm a little skeptical that the big prolotherapy groups haven't submitted their work to high-impact journals for good peer-review though.
And I have to point out, as a strong evidence-based practitioner, that the placebo effect can be as much as 75%, which only increases if you paid a lot of money for a treatment (just as people think higher priced wines taste better, they think the more they paid for a treatment the better it must be…)
There is a reason randomized controlled trials are the basis for evidence-based medicine. It is very easy to see "your" patients getting better with a treatment, or you had a good result, or your friends did…but until you compare it to good controls you really can't know if it really is more effective than that wonderful placebo.