Q. Why do patients report they are doing so well if they are not growing their cartilage back?
A. We don’t know exactly. We are probably changing the cellular and chemical composition of the joint for an extended time period. We know the arthritic joint is a hostile environment for the continued survival of already degenerating cartilage. We know that injecting good growth factors in an arthritic joint improves this chemical environment for a while. How long is a while? The Filardo PRP study showed clinical improvement in arthritis of the knee with a series of three PRP injections over nine to twelve months. According to Regenexx data, with same-day stem cell procedure, patients average eighteen months of relief with one to two series of these treatments. For arthritis of the knee and hip, the pain relief ranges from six months to five years for one to two series of stem cell injections.