An expandable interbody fusion device includes a superior endplate and an inferior endplate. The superior endplate is designed and structured to be angled the angled surface of the superior endplate becomes prominent upon expansion. The inferior endplate has a bounded cavity in which the superior endplate is fully nested in an unexpanded condition. In a fully expanded condition, the entire outer surface of the superior endplate moves out of the cavity and above an upper surface of the inferior endplate.
