Methods and instruments for interbody fusion

An interbody fusion apparatus for implantation in a disc space between adjacent vertebrae to be fused, comprising:

• a hollow body having an upper substantially cylindrical portion defining a first aperture therethrough, said hollow body having a lower substantially cylindrical portion defining a second aperture therethrough disposed generally opposite said first aperture, said hollow body having a first end and an opposite second end each arranged along a longitudinal axis, said first end including an end wall defining an upper end wall portion and a lower end wall portion, said end wall defining a first screw bore through said upper end wall portion and extending along a first bore axis oriented such that said first bore axis intersects said first aperture in said upper substantially cylindrical portion, said end wall defining a second screw bore through said lower end wall portion and extending along a second bore axis oriented such that said second bore axis intersects said second aperture in said lower substantially cylindrical portion.