Posterior lumbar interbody fusion (PLIF) and transforaminal lumbar interbody fusion (TLIF) are two types of spinal fusion surgeries that fuse the lumbar spine bones together utilizing a posterior (back area incision) method. The intervertebral disc is removed and replaced with a bone spacer utilizing a posterior approach in interbody fusion. When one or two spinal levels are fused, the posterior method is frequently utilized in conjunction with posterior decompression and instrumentation.