An end-effector, comprising: a clamp arm (1710, 1720, 1730, 1750); and an ultrasonic blade configured to acoustically couple to an ultrasonic transducer and to electrically couple to a pole of an electrical generator, wherein the ultrasonic blade and the clamp arm (1710, 1720, 1730, 1750) are configured to cooperate to grasp tissue; wherein the clamp arm (1710, 1720, 1730, 1750) comprises: a clamp jaw (1712, 1722, 1732, 1752) having a proximal end and a distal end, the proximal end pivotally movable about a pivot point; a cantilever electrode (1714, 1724, 1734, 1754) having a proximal end fixed to the proximal end of the clamp jaw and a distal end that is free to deflect, the cantilever electrode defining a surface facing the ultrasonic blade, the surface being configured to contact tissue and apply electrical energy to the tissue in contact therewith, wherein the cantilever electrode (1714, 1724, 1734, 1754) is configured to electrically couple to an opposite pole of the electrical generator, wherein the cantilever electrode is biased in a direction toward the clamp jaw (1712, 1722, 1732, 1752); a retainer configured to oppose the biasing force and to maintain the cantilever electrode (1714, 1724, 1734, 1754) in a substantially flat configuration relative to the ultrasonic blade and a clamp arm pad fixed to the clamp jaw (1712, 1722, 1732, 1752) and having at least a portion disposed between the clamp jaw (1712, 1722, 1732, 1752) and the cantilever electrode (1714, 1724, 1734, 1754) and another portion extending beyond the surface of the cantilever electrode (1714, 1724, 1734, 1754) to contact tissue in use, wherein, in use, when the retainer and the clamp arm pad are worn away, the cantilever electrode moves towards the clamp jaw due to the biasing force. a clamp arm (1710, 1720, 1730, 1750); and an ultrasonic blade configured to acoustically couple to an ultrasonic transducer and to electrically couple to a pole of an electrical generator, wherein the ultrasonic blade and the clamp arm (1710, 1720, 1730, 1750) are configured to cooperate to grasp tissue; wherein the clamp arm (1710, 1720, 1730, 1750) comprises: a clamp jaw (1712, 1722, 1732, 1752) having a proximal end and a distal end, the proximal end pivotally movable about a pivot point; a cantilever electrode (1714, 1724, 1734, 1754) having a proximal end fixed to the proximal end of the clamp jaw and a distal end that is free to deflect, the cantilever electrode defining a surface facing the ultrasonic blade, the surface being configured to contact tissue and apply electrical energy to the tissue in contact therewith, wherein the cantilever electrode (1714, 1724, 1734, 1754) is configured to electrically couple to an opposite pole of the electrical generator, wherein the cantilever electrode is biased in a direction toward the clamp jaw (1712, 1722, 1732, 1752); a retainer configured to oppose the biasing force and to maintain the cantilever electrode (1714, 1724, 1734, 1754) in a substantially flat configuration relative to the ultrasonic blade and a clamp arm pad fixed to the clamp jaw (1712, 1722, 1732, 1752) and having at least a portion disposed between the clamp jaw (1712, 1722, 1732, 1752) and the cantilever electrode (1714, 1724, 1734, 1754) and another portion extending beyond the surface of the cantilever electrode (1714, 1724, 1734, 1754) to contact tissue in use, wherein, in use, when the retainer and the clamp arm pad are worn away, the cantilever electrode moves towards the clamp jaw due to the biasing force. a clamp jaw (1712, 1722, 1732, 1752) having a proximal end and a distal end, the proximal end pivotally movable about a pivot point; a cantilever electrode (1714, 1724, 1734, 1754) having a proximal end fixed to the proximal end of the clamp jaw and a distal end that is free to deflect, the cantilever electrode defining a surface facing the ultrasonic blade, the surface being configured to contact tissue and apply electrical energy to the tissue in contact therewith, wherein the cantilever electrode (1714, 1724, 1734, 1754) is configured to electrically couple to an opposite pole of the electrical generator, wherein the cantilever electrode is biased in a direction toward the clamp jaw (1712, 1722, 1732, 1752); a retainer configured to oppose the biasing force and to maintain the cantilever electrode (1714, 1724, 1734, 1754) in a substantially flat configuration relative to the ultrasonic blade and a clamp arm pad fixed to the clamp jaw (1712, 1722, 1732, 1752) and having at least a portion disposed between the clamp jaw (1712, 1722, 1732, 1752) and the cantilever electrode (1714, 1724, 1734, 1754) and another portion extending beyond the surface of the cantilever electrode (1714, 1724, 1734, 1754) to contact tissue in use, wherein, in use, when the retainer and the clamp arm pad are worn away, the cantilever electrode moves towards the clamp jaw due to the biasing force.