Systems and methods for spinal fusion

A spinal fusion implant configured to be positioned in an interbody space between a first vertebra and a second vertebra, comprising:

• a proximal wall, a distal wall, an anterior wall and a posterior wall, the anterior wall having a first length and being configured to face an anatomically anterior aspect of the interbody space while the implant is positioned in the interbody space, the posterior wall having a second length and being configured to face an anatomically posterior aspect of the interbody space while the implant is positioned in the interbody space, the anterior wall meeting the distal wall at a first corner having a first corner radius of curvature and meeting the proximal wall at a second corner having a second corner radius of curvature, the posterior wall meeting the distal wall at a third corner having a third corner radius of curvature and meeting the proximal wall at a fourth corner having a fourth corner radius of curvature, the first corner radius of curvature and the second corner radius of curvature being greater than the third corner radius of curvature and the fourth corner radius of curvature such that the second length is greater than the first length.