The so-called Bagby Basket was the first intervertebral cage that was initially used in horses with wobbler syndrome. Other milestones in the improvement of the cage designs followed, resulting in the production of different implant shapes and materials. The elastic modulus of the interbody implants approached by modern materials became more and more similar to bone, so that subsidence of cages reduced and the fusion rate could be further increased. The primary stability could be further increased with screw-rod systems, so that dorsal instrumentation became the standard in the context of PLIF and TLIF procedures today.