Clinical Research Directory

In monopolar group : . Inferomedial, superomedial, superolateral GN branches and nerve to vastus intermedius of the patients were identified with fluoroscopy and a 22 Gauge, 10 cm radiofrequency (RF) cannula with a 10 mm active tip was advanced to the targeted nerves under fluoroscopy guidance. The location of the RF cannula was visualized by anteriorposterior and lateral images. Sensory stimulation was applied at 50 Hz to determine the nerve position. Since the sensory stimulation threshold must be \< 0.6 V, nerve position was tested with the absence of fasciculation in the relevant area of the lower extremity upon 2.0 V stimulation at 2 Hz.

a similar technique will be used to insert the canula, except that, instead of one cannula two cannulae (approximately 10 mm apart) apart) will be inserted and no manipulation of cannulae was done to stimulate the target nerve as done in MRFA Target areas were similar to monopolar technique Each nerve will be ablated for 2 minutes in both the groups. All procedures were done by one pain physician who had more then 10 years' experience of radiofrequency procedures.