A system for bipolar, irrigated, radiofrequency ablation comprising: an elongate inner electrode assembly having a distal end, a proximal end, and an outer surface, the inner electrode assembly comprising: a sheath , a first lead within the sheath, and an electrode array comprising three or more electrode tines positioned at the distal end of the inner electrode assembly and electrically connected to the first lead, wherein the electrode array is moveable between a first position contained within the sheath and a second position protruding from a distal end of the sheath; an elongate outer electrode assembly having a distal end and a proximal end and comprising a cannula having a distal end and a proximal end, the outer electrode assembly comprising: an inner surface defining a lumen, a shaft electrode near the distal end of the cannula on an outer surface of the outer electrode assembly, and a conductive path from the proximal end of the outer electrode assembly to the shaft electrode; and an irrigation path defined between the outer surface of the inner electrode assembly and an outer surface of the outer electrode assembly; wherein the inner electrode assembly is configured to be positioned within the lumen of the outer electrode assembly, and wherein the system is configured for attaching to a generator to provide radiofrequency current flow between the electrode array and the shaft electrode. an elongate inner electrode assembly having a distal end, a proximal end, and an outer surface, the inner electrode assembly comprising: a sheath , a first lead within the sheath, and an electrode array comprising three or more electrode tines positioned at the distal end of the inner electrode assembly and electrically connected to the first lead, wherein the electrode array is moveable between a first position contained within the sheath and a second position protruding from a distal end of the sheath; a sheath , a first lead within the sheath, and an electrode array comprising three or more electrode tines positioned at the distal end of the inner electrode assembly and electrically connected to the first lead, wherein the electrode array is moveable between a first position contained within the sheath and a second position protruding from a distal end of the sheath; an elongate outer electrode assembly having a distal end and a proximal end and comprising a cannula having a distal end and a proximal end, the outer electrode assembly comprising: an inner surface defining a lumen, a shaft electrode near the distal end of the cannula on an outer surface of the outer electrode assembly, and a conductive path from the proximal end of the outer electrode assembly to the shaft electrode; and an inner surface defining a lumen, a shaft electrode near the distal end of the cannula on an outer surface of the outer electrode assembly, and a conductive path from the proximal end of the outer electrode assembly to the shaft electrode; and an irrigation path defined between the outer surface of the inner electrode assembly and an outer surface of the outer electrode assembly; wherein the inner electrode assembly is configured to be positioned within the lumen of the outer electrode assembly, and wherein the system is configured for attaching to a generator to provide radiofrequency current flow between the electrode array and the shaft electrode. <EOS>