January 08′ Platelet Rich Plasma Enhances Tendon Healing
A new article from the Journal of Cellular Physiology presented some new insights into the role of PRP in tendon healing. After injecting PRP into mice patellar tendons, accelerated healing was demonstrated. The PRP had an 8.8 times platelet concentration above baseline versus whole blood.
Circulation derived cells play a key role in tendon healing. Blood flow is very important in connective tissue regeneration. Tendons typically have a poor blood supply (only 1/3 of the amount found in muscles). This study showed increased quantity of these healing cells in the early phase of tendon repair. Unfortunately, these helpful cells normally disappear with time. Therefore prolonging their presence is advantageous. Also increased type I & III collagen and macrophages were increased; supporting that PRP promotes tendon healing
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