Effectiveness of Stromal Vascular Fraction (SVF) and Platelet -Rich Plasma (PRP) in Patients With Knee Osteoarthritis: Study Protocol for a Phase III, Prospective, Randomized, Controlled Multi-center Study.

Procedure to prepare SVF: In the operations room and after aseptic technic, local anesthesia is applied in the liposuction incision site with lidocaine 1% without epinephrine subcutaneously. 60 ml of tumescent solution are injected. After 15-20 minutes waiting, 15 ml of lipoaspiration per side are recollected into a double syringe. This is centrifuged for 4 minutes at 2.500 rpm and the remaining fat is separated from the other fractions. Two 1.4 mm GEMS syringes are attached together, and fat is transferred at least 30 times from one syringe to the other. Syringe content is again centrifugated for 4 minutes. The oil is discarded and approximately 1.5ml SVF fraction remains.

Procedure to prepare PRP: 15 cm of peripheral blood obtained by venipuncture are centrifugated at 1500 RPM during 5 minutes. Using PRP Arthrex kit platelets poor plasma is discarded and 1-3 mm of PRP are ready to be injected