A unipolar electrosurgical electrode or probe that is configured for use in MIS electrosurgical procedures. The electrosurgical electrode comprises a long, thin, flexible, insulated wire configured to cooperate with the small cannula of a mini-endoscope to reach interior tissue not normally reachable by electrosurgical electrodes. When energized, a unipolar discharge is generated at the working end of the electrode. The probe can be used for spinal and endonasal procedures.