The specifications of the ROI® implant aim at satisfying the requirements of lumbar intersomatic arthrodesis. ROI intersomatic cages were designed for degenerative lumbar spinal surgery. Using a posterior approach, the implant is introduced into the intervertebral space to enhance arthrodesis through bone fusion. The open geometry of this intersomatic cage explains it’s unique characteristics which enhance the quality of bone graft. A section pin-pointed within a complete range, an optimal weight-bearing surface allowing for safe loading, thus making it possible to restore and maintain intervertebral height as well as the restoration of the desired lordosis.