03/05/2026
What is a Growth Factor Injection?
It involves injecting a concentration of autologous growth factors (from the patient’s own blood) into the knee joint. These growth factors include:
* PDGF (Platelet-derived growth factor)
* TGF-β (Transforming growth factor)
* VEGF (Vascular endothelial growth factor)
They are believed to:
* Reduce inflammation
* Promote cartilage repair (limited evidence)
* Improve joint lubrication environment