The WeShare Interbody Fusion Cage by Yellow Steps was designed by surgeons for surgeons, and are intended for implantation into the poster lumbar spinal column to treat patients having degenerative disc problems. Easing these implants into position in the spinal column is assured due to their bullet-shaped nose, contoured shape, and 4 degree or 8 degree angulations. These cages can accommodate heights of between 7 and 14 mm. They are marked with radiolucent X-ray markers to provide full traceability. The optimal design of these cages ensures great fusion results.