Centinel Spine's prodisc L Total Disc Replacement is intended to replace damaged intervertebral discs in a patient’s lower back (lumbar spine). The prodisc L consists of two cobalt-chrome endplates, and a plastic (ultra-high molecular weight polyethylene) inlay. This FDA approval expands the indication for use of the prodisc L to include treatment of up to two consecutive lumbar spinal sections (levels) from L3-S1.