QL Block Posterior Approach Needle Path Image

White Arrow: Needle Path

Blue Area: Local Anesthetic

1. Posterior
2. Anterior
3. Latissimus Dorsi
4. External Oblique
5. Quadratus Lumborum
6. Internal Oblique
7. Erector Spinae
8. Transverse Process
9. Psoas
10. Peritoneum
11. Pararenal Fat