Expandable interbody implant and methods of use

An intervertebral implant comprising:

• a piston component comprising an endplate surface and an inner surface disposed in an opposing orientation relative to the endplate surface, the piston component extending between an anterior end and a posterior end;
• a base component comprising an endplate surface and an inner surface disposed in an opposing orientation relative to the endplate surface of the base component, the base component extending between an anterior end and a posterior end, the base component including an actuator, the actuator comprising a screw engaged with the base component;
• a wedge disposed for engagement and being movable relative to the piston and base components, the wedge comprising at least a first ramp and a second ramp axially spaced apart from the first ramp, the wedge further comprises an anterior rail including at least a portion of each of the first ramp and the second ramp, and a posterior rail including at least a portion of each of the first ramp and the second ramp, at least one of the ramp portions disposed with the anterior rail has a first height and at least one of the ramp portions disposed with the posterior rail has a second height, the first height being greater than the second height
• wherein the actuator is fixedly engaged with the wedge to effect axial translation of the wedge such that the ramps engage the inner surface of the piston component to move the components between a first, collapsed configuration and a second, expanded configuration.