An annulus replacement technique includes inserting a guide wire into an annulus space. A first dilator tube is then slid over the guide wire and into the intervertebral space. The first dilator tube has a first longitudinal channel of a first cross section that is shaped to matingly engage with the guide wire. A second dilator tube is then slid over the first dilator tube and into the intervertebral space. The second dilator tube has a second longitudinal channel of a second cross section that mating engages with an outer cross section of the first dilator tube. The first dilator tube and the guide wire can then be removed and an implant can be inserted into the intervertebral space through the second dilator tube.