Anhaga,
Glad you reposted this...my concern is that as many have stated, stem cell application for arthritis is still in the experimental phase (in the US) and since it's still experimental not covered by insurance. Therefore, it will cost quite a bit for a roll of the dice so to speak.
As far as I am aware, there is only 1 surgeon in Japan who is using bone marrow stem cells which are processed for 2 weeks along the patient's own cartilage to form new cartilage in a petri dish. This new cartilage material is then re-injected into joint space (only knees so far)) to areas where cartilage is lacking or damaged. He also uses magnets to properly place the cells on a platform into precise locations. Otherwise the cells do not necessarily go to the desired areas during injections. The question of precision in placement has been a question I have posed to several regen med clinics without an answer yet. They all use x-ray guided injections, but that still doesn't ensure precision of placement.
I posted a video of the Japanese surgeon a few months ago but will put it up again if anyone wishes to see it. He has had good success with his method and is teaching more surgeons from other countries. So far, only younger patients with some cartilage in knee joints are candidates, but his life goal is to apply this technique for application in older patients with no cartilage and for use other joints. He stated it took about 15 years to develop his current technique.
The regenerative medicine clinics that are virtually all over the US now are in quite a dilemma due to not being able to store stem cells from any source for longer than 24 hours as required by federal law. Due to the law, clinics that offer stem cell injections have 3 choices:
1. use stem cells, regardless of sources, obtained within a 24 hour period in that same day
2. use cells that are more than 24 hours old in which case most are no longer viable. In many independent, peer reviewed studies, these cells have shown to cause serious infections
3. inject another substance such as PRP (platelet rich plasma) mixed with steroids
The 3d choice is what most patients receive and of course most of them claim relief and attribute it to stem cells.
I just spoke with another regenerative stem cell clinic today. They were very nice and professional and explained their modaliteis, claiming good results for many patients, but they do not in any way perform live stem cell or cartilage transplants which it would seem is what arthritis patients truly need.
That said, I don't believe we are that far off from technology that would allow for cartilage transplants using a patient's own stem cells. If anyone has new information on this - since technology is always evolving - please share. Thousands of us who suffer from chronic OA pain might be helped. I remain optimistic.