Posterior Lumbar Interbody Fusion (PLIF) Cage is a spinal implant used in lower back fusion surgeries through a posterior approach. It is placed between the vertebrae after disc removal to restore disc height, stabilize the spine, and promote bone fusion. Made from biocompatible materials such as titanium or PEEK, the PLIF cage provides strong support, improves spinal alignment, and helps relieve nerve compression for long-term lumbar stability.