Fig. 2

Illustration of the technique used for the intraosseous infiltration of PRGF. a Sagittal view. When the disc lesion is adjacent to two injured endplates with Modic type I or II lesions, Schmörl hernias, or fracture sequels [27], the regeneration of the disc lesion is more effective, faster, and safer while simultaneously performing an intraosseous infiltration in the two vertebral bodies adjacent to the disc. Only 4–5 ml of PRGF (F2) are infiltrated and with no need for the tip of the needle to be near the endplate, since this amount fills the entire vertebral body. b Axial view showing the transpedicular approach of the needle (15 G, 1.8 mm × 90 mm) that will finally reach the intraosseous level of the vertebral body barely past 1 cm from the back wall of itself. The trocar-biopsy needle system is placed with a low speed power driver