Just found out about a new (to me) substance that you can inject with. Supposed to provide good results. 

Anyone used this? Same results as the traditional meds? How much more costly was it?

It's a joint cushion, similar to Noltrex. It's collagen and elastin.

Much more expensive than HA/cortisone, but it's also supposed to ls much longer than HA/cortisone.
Used it on one horse. Too early to tell on him. I have a couple friends that have used it with good results, again, too early to tell how long it lasts.

Thanks for the information! 

My filly had a small chip in her knee removed and when her sutures came out they injected Spryng. It was expensive (I think $600+) but the surgeon thought it was the best product to use.  She was never lame with the chip so I don't know that we'll notice a difference but I have hopes for her having a long performance career so I wanted to give her the best I could. 

I have a mare that tore the meniscus in her stifle. We used Spryng and ATS Acuscope/Myopulse Therapy and she healed in about half the expected time. Very pleased with the results.