An end effector assembly for an endoscopic surgical instrument includes a pair of jaw members disposed in opposing relation relative to one another. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. Each jaw member defines an arcuate configuration and includes a proximal segment and a distal segment coupled to the proximal segment. The distal segment is moveable with respect to the proximal segment between a use position, wherein the proximal segment and the distal segment cooperate to define the arcuate configuration of the jaw member, and an insertion position, wherein the distal segment is offset relative to the proximal segment to interrupt the arcuate configuration of the jaw member.