Fig. 2From: Transforaminal lumbar interbody fusion (TLIF) versus posterior lumbar interbody fusion (PLIF) in the treatment of single-level lumbar spondylolisthesisTLIF procedure for the patient with isthmic L5 S1 spondylolisthesis. a Preoperative X-ray lateral view. b, c Posteroanterior and lateral X-ray films 6 months after surgery. Note the reduction in the anterolisthesis, restoration of disk height, and the visible bone fusionBack to article page