Devices and methods to insert a prosthetic implant into an intervertebral disc space. The device may comprise pivotally connected channel members and a locking mechanism pivotally connected to the channel members. The locking mechanism may comprise a latch that engages a slot in the sidewalls of a channel member to at least partially cover an open side of the channel members and lock the channel members in place. A prosthetic implant may be loaded into the channel members in a relaxed configuration and then unfolded to an implantation configuration by pivoting the channel members.