title: Does Transforaminal Lumbar Interbody Fusion Have Advantages over Posterolateral Lumbar Fusion for Degenerative Spondylolisthesis?
abstract: Study Design Retrospective cohort study. Objective To compare the clinical and radiographic outcomes of transforaminal lumbar interbody fusion (TLIF) and posterolateral lumbar fusion (PLF) in the treatment of degenerative spondylolisthesis. Methods This study compared 24 patients undergoing TLIF and 32 patients undergoing PLF with instrumentation. The clinical outcomes were assessed by visual analog scale (VAS) for low back pain and leg pain, physical component summary (PCS) of the 12-item Short-Form Health Survey, and the Oswestry Disability Index (ODI). Radiographic parameters included slippage of the vertebra, local disk lordosis, the anterior and posterior disk height, lumbar lordosis, and pelvic parameters. Results The improvement of VAS of leg pain was significantly greater in TLIF than in PLF unilaterally (3.4 versus 1.0; p = 0.02). The improvement of VAS of low back pain was significantly greater in TLIF than in PLF (3.8 versus 2.2; p = 0.02). However, there was no significant difference in improvement of ODI or PCS between TLIF and PLF. Reduction of slippage and the postoperative disk height was significantly greater in TLIF than in PLF. There was no significant difference in local disk lordosis, lumbar lordosis, or pelvic parameters. The fusion rate was 96% in TLIF and 84% in PLF (p = 0.3). There was no significant difference in fusion rate, estimated blood loss, adjacent segmental degeneration, or complication rate. Conclusions TLIF was superior to PLF in reduction of slippage and restoring disk height and might provide better improvement of leg pain. However, the health-related outcomes were not significantly different between the two procedures.
authors.affiliation: Department of Orthopedic Surgery, University of California, San Francisco, California, United States ; Department of Orthopedic Surgery, Sumitomo Hospital, Osaka, Japan.
authors.forename: Takahito
authors.initials: T
authors.lastname: Fujimori
authors.affiliation: Department of Orthopedic Surgery, University of California, San Francisco, California, United States.
authors.forename: Hai
authors.initials: H
authors.lastname: Le
authors.affiliation: Department of Orthopedic Surgery, University of California, San Francisco, California, United States.
authors.forename: William W
authors.initials: WW
authors.lastname: Schairer
authors.affiliation: Department of Orthopedic Surgery, University of California, San Francisco, California, United States.
authors.forename: Sigurd H
authors.initials: SH
authors.lastname: Berven
authors.affiliation: Department of Orthopedic Surgery, University of California, San Francisco, California, United States.
authors.forename: Erion
authors.initials: E
authors.lastname: Qamirani
authors.affiliation: Department of Orthopedic Surgery, University of California, San Francisco, California, United States.
authors.forename: Serena S
authors.initials: SS
authors.lastname: Hu
keywords: PLF; TLIF; disk height; lordosis; outcome; pelvic parameters
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