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A Comparison Between Cortical Bone Trajectory Screws And Traditional Pedicle Screws in Patients With Single-Level Lumbar Degenerative Spondylolisthesis: Five-Year Results

 Ji-Won Kwon  ;  Yung Park  ;  Byung Ho Lee  ;  Si Young Park  ;  Chae Kwang Lim  ;  Jae Ho Yang  ;  Joong-Won Ha  ;  Kyung-Soo Suk  ;  Seong-Hwan Moon  ;  Hak-Sun Kim 
 SPINE, Vol.48(22) : 1617-1625, 2023-11 
Journal Title
Issue Date
Back Pain / etiology ; Back Pain / surgery ; Cortical Bone / diagnostic imaging ; Cortical Bone / surgery ; Humans ; Lumbar Vertebrae / diagnostic imaging ; Lumbar Vertebrae / surgery ; Minimally Invasive Surgical Procedures ; Pedicle Screws* ; Retrospective Studies ; Spinal Fusion* / methods ; Spondylolisthesis* / diagnostic imaging ; Spondylolisthesis* / etiology ; Spondylolisthesis* / surgery ; Treatment Outcome
Study Design. A retrospective observational study.Objective. This study investigated the clinical and radiological results of using cortical bone trajectory (CBT) screws versus traditional pedicle (TP) screws in transforaminal lumbar interbody fusion (TLIF) during a five-year follow-up of patients with single-level lumbar degenerative spondylolisthesis.Summary of Background Data. Few studies have compared five-year follow-up outcomes between CBT screws and TP screws in TLIF.Materials and Methods. We reviewed outcome data of patients with single-level lumbar degenerative spondylolisthesis who underwent TLIF procedures with CBT screws (131 patients) or TP screws (80 patients) between 2011 and 2015. Patient-reported clinical outcome data included Oswestry disability index scores and visual analog scale (VAS) scores for back and leg pain at baseline, six months, and one year, two years, and five years postoperatively. The radiographic fusion rate and prevalence of secondary surgery for adjacent segment disease were also measured.Results. During the follow-up over five years, the CBT group had significantly lower VAS scores for back pain (P<0.0001, respectively). At two years after surgery, the CBT group had significantly higher VAS scores for leg pain (P=0.007). At five years postoperatively, no significant differences existed in the VAS score for leg pain or in the Oswestry disability index score between the two groups. Radiographic fusion rates (CBT vs. TP: 95.5% vs. 95.9%; P=0.881) and adverse events during the five years after surgery were not significantly different. At two years postoperatively, the prevalence of secondary surgery to treat adjacent segment disease was significantly different between the two groups (CBT vs. TP: 13.7% vs. 5.0%; P=0.044).Conclusions. Our results suggest that, during a five-year followup, CBT screws for TLIF were an effective treatment compared to TP screws in the setting of single-level lumbar degenerative spondylolisthesis. However, when using CBT screws for TLIF, surgeons should consider the higher rate of secondary procedures to treat symptomatic adjacent segment disease.
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1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Ji-Won(권지원) ORCID logo https://orcid.org/0000-0003-4880-5310
Kim, Hak Sun(김학선) ORCID logo https://orcid.org/0000-0002-8330-4688
Moon, Seong Hwan(문성환)
Park, Si Young(박시영)
Suk, Kyung Soo(석경수) ORCID logo https://orcid.org/0000-0003-0633-2658
Yang, Jae Ho(양재호) ORCID logo https://orcid.org/0000-0001-7421-2805
Lee, Byung Ho(이병호) ORCID logo https://orcid.org/0000-0001-7235-4981
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