Blood contains platelets, which are cells most known for their role in blood clotting after an injury. However, platelets also contain hundreds of proteins called growth factors which are paramount for healing injuries.
PRP is a therapy in which platelets (and thus their growth factors) are highly concentrated down from the patient’s own blood sample. This concentration of platelets is several times higher than a normal blood sample. is plasma with many more platelets than what is typically found in blood.
PRP is created from blood drawn from the patient. The platelets are then separated from the other blood components and concentrated in a specialized collection cup in a centrifuge. This increased concentration of platelets is then re-combined with the remaining blood sample and injected into the injury site (knee, shoulder, etc.). The growth factors derived from these blood samples are thought to promote tissue repair. Joint injuries respond quite well to PRP treatment.