An active fixation cardiac lead is disclosed that includes an elongated lead body having opposed proximal and distal end portions and an interior lumen that extends therethrough. A rotatable fixation element is operatively associated with the distal end portion of the lead body and a tubular torque-transmitting member extends through the interior lumen of the lead body. The tubular torque-transmitting member has a distal end connected to the fixation element and a proximal end connected to a rotatable actuator operatively associated with the proximal end portion of the lead body. Preferably, the rotatable actuator is part of a connector assembly that is operatively associated with the proximal end portion of the lead body.