Table 5 Comparison between VDF and VRF Technique
Items | VDF | VRF |
|---|---|---|
Approach | Transforaminal | Transforaminal |
Puncture site | Paraspinal muscle 12–16 cm lateral to the midline | Paraspinal muscle 10–14 cm lateral to the midline |
Puncture target | Tip of SAP | Ventral portion of SAP |
Site of foraminoplasty | Tip of SAP | Base of SAP |
Adjustment instrumentation of puncture | NO | Eccentric guide rod |
Requirements for puncture accuracy | High | Low |
Instrumentation of bony-plasty | Drill | Endoscopic reamer |
Radiation exposure time | Long | Short |
Operation time | Longer | Long |
Facet disturbance | smaller | small |
Lateral recess decompression | More precise | Precise |