Wow, this is an interesting conversation to come across. It's really interesting to me because I happen to own the company that makes that stuff! I hope you don't mind if I take the time to address all the points that were raised.
First, is it legitimate? Yes, it is. The BFST device is a class II medical device that is registered with both the FDA and Health Canada. And that isn't just a form, we had agents from both orgs come and spend a week each with us examing our facilities, our engineering and our claims. We are also ISO-13485 (required for medical device manufactureres) and get audited every year. We've been selling this product for about 5 years now and we have a large number of customers who have come back more than once for subsequent injuries after trying our product the first time.
Blood flow and the meniscus is an interesting point. How your body works is really fascinating and complicated but here's a simplified explanation. Your circulatory system is really just the plumbing and doesn't connect to much of the tissue that it ultimately services. Your capillaries are the smallest vessels and they really exchange the 'supplies' in the blood stream to your interstitial fluid which is essentially the 'sea' in which surrounds your cells. It also picks up the waste for removal from the interstitial fluid. Most cells absorb the good from, and discharge the bad to, the interstitial fluid.
The meniscus really does not have capilaries within, but it is composed of specialized, living cells. Much of those cells are collagen which is very hardy and is a common building block of the body in areas with limited blood flow near by. It depends on diffusion of resources and waste through surrounding tissue and interstitial fluids which are still maintained by the nearest blood flow network. Don't doubt for a moment that the quality of that supply network is dependant on the circulatory system because it is. The diffusion is also largely facilitated by motion, so motion is important but take note THAT DOES NOT MEAN YOU NEED TO LOAD THE KNEE with 'strengthening' loads, you only need to keep it moving regularly to facilitate the diffusion. You can stimulate the circulation component with BFST rather than heavily loading your muscles.
This is the essence of Blood Flow Stimulation Therapy for something like a torn meniscus. Let BFST stimulate the circulatory system. Go through motion to keep the diffusion going and do it without load so you are not damaging the meniscus further. Your meniscus is real living tissue that can heal. It just does it very slowly because collagen evolves so slowly. It is interesting to note that collagen is a key component of healing almost any injury in your body. We try to talk in laymans terms about injury healing on our site here :
http://www.kingbrand.com/wound-healing.php?REF=10PV12.47
Most orthoscopic meniscus surgery isn't a repair, but really just a trimming of the meniscus around the outside edges. This definitely gets rid of the pain, because that's the only location of nerves in your meniscus. Cut them out an the pain is gone. But it is also the source of much of the limited blood flow so I'm not a big fan. Usually it takes a while, but while the trimming may stop the pain, the damage and destruction continues until the meniscus is severly destroyed and the next pain you feel is from bone on bone. At this point you then have no choice but knee replacement surgery.
I want to say though, that knee replacement surgery itself is not a bad thing. It's no minor process, because they are literally chopping the tops off both bones, putting new artificial caps on them and an artificial joint, but the solution works great. There are excellent artifical knees out there that perform great. I would recommend you have it done by a knee replacement specialist who does nothing but knees as opposed to a general orthopedic surgeon. A bad job isn't common but it's a nightmare so go with the specialist who eat, sleeps, and breathes knees. When done right using good parts, the solution is awesome.
This link is our best page on meniscus injuries:
http://www.kingbrand.com/Knee-Injury-Torn-Meniscus.php?REF=10PV52.47
Yes, it is a bit sales pitchy, but the reality is that there are a lot of sites selling the snake oil and gimmicks that we have to live amongst online. Welcome to the world of the internet. Having a quality product that works isn't enough. We have to present a compelling message just to be heard above the noise of all the junk.
I hope you don't mind my including these links. But this post happens to be about my company and I feel pretty passionate about making sure you understand what we're about.
BHBH
BHBH
) along with three other ligaments in my knee. Did some pre-surgical rehab. Post op debrief and surgeon said he didn't need to repair the meniscus as it healed itself. No problems since. 
