Evaluating the Sensory Index for Success of Trigeminal RF

"1. the classic Hartle technique is used to reach the Gasserian ganglion~2. Sensory stimulation with the RF equipment is conducted and parathesia of the affected branch is achieved at 0.1-0.2 V (50 Hz), keeping in mind that the mandibular part of the Gasserian ganglion is ventrolateral and the ophthalmic rootlets are postrolateral. Motor pre-stimulation (2 Hz) is achieved with masseter contraction at 0.1-0.3 V .~3. After sensory and motor stimulation, RF therapy is conducted by use of the RF generator , in the sequence:~ * Conventional RF 1st lesion at 60 °C for 60 s then 2nd lesion at 65°C for 60 seconds then 3rd lesion at 70°C for 60 seconds~ * Finally, PRF is applied for 360 second repeated at 45 V, with a pulse width of 10 ms and a pulse frequency of 4 Hz. The cut-off needle tip temperature is set at 42 °C.~4. Before withdrawal of needle 1 cc xylocaine 1% + 0.5 cc dexamethasone 4mg to be given"