A neurostimulation system includes a lead, a receptacle, and a fastener. The lead includes electrodes disposed along the distal portion of the lead, contacts disposed along the proximal portion of the lead, and a slot extending completely through the lead and formed near an end of the proximal portion of the lead. The receptacle defines a lumen for receiving the proximal end of the lead and includes contacts for making electrical contact with the contacts on the lead when the lead is received by the receptacle. The receptacle further includes a slot through the receptacle that is configured and arranged to align with the slot of the lead when the lead is received by the receptacle. The fastener is configured and arranged to be inserted completely through the slot in the lead and through the slot in the receptacle to fasten the lead and the lead extension together.
