Interbody Spinal Fusion Implant Having Locking Elements with Lateral Displacement

An interbody spinal fusion implant comprising:

• a fusion spacer having a top surface and an opposing bottom surface that extend between a front face and an opposing back face, a recess being formed on the front face and being at least partially bounded by an interior surface, a first screw hole passing through the interior surface of the recess;
• a first bone screw being received within the first screw hole;
• and
• a first locking screw at least partially disposed within the recess of the fusion spacer, the first locking screw being movable between an advanced position and a retracted position, when the first locking screw is in the retracted position, the first locking screw is secured to the fusion spacer but can freely slide laterally within the recess to enable the first bone screw to be freely removed from the first screw hole, when the first locking screw is moved to the advanced position, the first locking screw is held fixed relative to the fusion spacer and obstructs removal of the first locking screw from the first screw hole.