A new study of platelet rich plasma (PRP) has found it to be ineffective in the treatment of Achilles tendonitis. PRP has been a popular treatment for a challenging set of conditions. Chronic types of tendonitis, including Achilles tendonitis, can be slow to heal, and prevent people from performing their favorite activities. PRP has gained popularity, not because it has been shown to be effective, but because it has been used by professional and elite athletes. Because of that, demand for PRP has grown significantly.
PRP uses the body's own cells to stimulate a healing response. Because the patient's own cells are used, side-effects are minimal, and risks are small. There has been hope that this treatment may be the answer to several chronic conditions, but this new study does not appear promising.
Related: Platelet Rich Plasma | Achilles Tendonitis | Overuse Injuries
Sources:
Goldstein, J "Hot New Sports Injury Treatment! (Doesn't Work in Study)" Wall Street Journal, January 12, 2010.
There are more studies out that show positive results for treatments with PRP than with not using PRP. Dentistry has been using PRP for twenty years with positive results. The studies that I have read (I try to read all that come out) do not show the systems that were used to make the PRP or the concentration of platelets produced. Robert Marx,in a landmark study in 2004, established therapeudic platelet rich plasma must have a concentration level of 1 million platelets per cubic millimeter. A human has a range of platelets in their blood from 150,000 to 350,000 platelets per cubic millimeter with a means (commonly refered to as the baseline) of 200,000 platelets per cubic millimeter. You need a system that can produce five times the means or baseline to have a minumum therapeudic value.
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