CT Hounsfield unit is a reliable parameter for screws loosening or cages subsidence in minimally invasive transforaminal lumbar interbody fusion

Retrospective cohort study. To validate computed tomography (CT) radiodensity in Hounsfield units (HU) as a prognostic marker for pedicle screw loosening or cage subsidence in minimally invasive transforaminal lumbar interbody fusion (MI-TLIF). The retrospective study involved 198 patients treated w...

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Bibliographic Details
Published in:Scientific reports 2023-01, Vol.13 (1), p.1620-1620, Article 1620
Main Authors: Yao, Yu-Cheng, Chao, Hsien, Kao, Kun-Yu, Lin, Hsi-Hsien, Wang, Shih-Tien, Chang, Ming-Chau, Liu, Chien-Lin, Chou, Po-Hsin
Format: Article
Language:English
Subjects:
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Computed tomography
Humanities and Social Sciences
Humans
Lumbar Vertebrae - diagnostic imaging
Lumbar Vertebrae - surgery
multidisciplinary
Pedicle Screws
Retrospective Studies
Risk factors
Science
Science (multidisciplinary)
Spinal Fusion - adverse effects
Spinal Fusion - methods
Subsidence
Tomography, X-Ray Computed
Treatment Outcome
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Summary:Retrospective cohort study. To validate computed tomography (CT) radiodensity in Hounsfield units (HU) as a prognostic marker for pedicle screw loosening or cage subsidence in minimally invasive transforaminal lumbar interbody fusion (MI-TLIF). The retrospective study involved 198 patients treated with MI-TLIF. Screw loosening (SL), cage subsidence (CS), and fusion status were assessed by plain radiographs. The risk factors of SL and CS were identified using logistic regression. A total of 258 levels and 930 screws were analyzed. During a 2-year follow-up, 16.2% and 24.7% of patients had CS and SL respectively. The cut-off value of L1 HU for predicting SL or CS was 117. The L1 HU 
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-28555-7