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Effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture

BACKGROUND: The influence of pedicle screw number and insertion depth on outcomes of lumbar fixation remains uncertain. The purpose of this study was to compare the imaging balance stability and clinical functional improvement of lumbar fracture patients with different pedicle screw numbers and inse...

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Autores principales: Liu, Hao, Chen, Weikai, Zhang, Junxin, Jiang, Xiaomin, Yang, Huilin, Qu, Rui, Liu, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7706188/
https://www.ncbi.nlm.nih.gov/pubmed/33256776
http://dx.doi.org/10.1186/s13018-020-02111-9
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author Liu, Hao
Chen, Weikai
Zhang, Junxin
Jiang, Xiaomin
Yang, Huilin
Qu, Rui
Liu, Tao
author_facet Liu, Hao
Chen, Weikai
Zhang, Junxin
Jiang, Xiaomin
Yang, Huilin
Qu, Rui
Liu, Tao
author_sort Liu, Hao
collection PubMed
description BACKGROUND: The influence of pedicle screw number and insertion depth on outcomes of lumbar fixation remains uncertain. The purpose of this study was to compare the imaging balance stability and clinical functional improvement of lumbar fracture patients with different pedicle screw numbers and insertion depths. METHODS: Sixty-five patients undergoing lumbar pedicle screw fixation from January 2016 to January 2018 were enrolled. They were included in long screw (LS) group and short screw (SS) group or 6 screw (6S) group and 4 screw (4S) group. The radiographic outcomes were assessed with lumbar lordosis (LL), segmental lordosis (SL), fractured vertebral lordosis (FL), sacral slope (SS), pelvic incidence (PL), and pelvic tilt (PT). The visual analog scale (VAS) and the Oswestry Disability Index (ODI) score were used for functional assessment. Multiple linear regression was performed to identify the risk factors of FL, SL, and LL correction at the final follow-up. RESULTS: FL, SL, and LL were significantly different in all matching subgroups to compare long and short screws and in most matching subgroups to compare 6 and 4 screws. The SS, PT, and PI seem to be similar in all subgroups in different periods. Significant differences of VAS and ODI were found between LS and SS in the 4S group and between 4S and 6S in the SS group. Insertion depth, screw number, BMD, age, and preoperative imaging data were significant factors for imaging balance stability correction at the final follow-up. CONCLUSIONS: Long screws and 6 screws showed better fracture vertebral restoration and lumbar spinal sagittal stabilities. The surgery type, age, and BMD are important focus points for the treatment of lumbar vertebral fractures.
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spelling pubmed-77061882020-12-02 Effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture Liu, Hao Chen, Weikai Zhang, Junxin Jiang, Xiaomin Yang, Huilin Qu, Rui Liu, Tao J Orthop Surg Res Research Article BACKGROUND: The influence of pedicle screw number and insertion depth on outcomes of lumbar fixation remains uncertain. The purpose of this study was to compare the imaging balance stability and clinical functional improvement of lumbar fracture patients with different pedicle screw numbers and insertion depths. METHODS: Sixty-five patients undergoing lumbar pedicle screw fixation from January 2016 to January 2018 were enrolled. They were included in long screw (LS) group and short screw (SS) group or 6 screw (6S) group and 4 screw (4S) group. The radiographic outcomes were assessed with lumbar lordosis (LL), segmental lordosis (SL), fractured vertebral lordosis (FL), sacral slope (SS), pelvic incidence (PL), and pelvic tilt (PT). The visual analog scale (VAS) and the Oswestry Disability Index (ODI) score were used for functional assessment. Multiple linear regression was performed to identify the risk factors of FL, SL, and LL correction at the final follow-up. RESULTS: FL, SL, and LL were significantly different in all matching subgroups to compare long and short screws and in most matching subgroups to compare 6 and 4 screws. The SS, PT, and PI seem to be similar in all subgroups in different periods. Significant differences of VAS and ODI were found between LS and SS in the 4S group and between 4S and 6S in the SS group. Insertion depth, screw number, BMD, age, and preoperative imaging data were significant factors for imaging balance stability correction at the final follow-up. CONCLUSIONS: Long screws and 6 screws showed better fracture vertebral restoration and lumbar spinal sagittal stabilities. The surgery type, age, and BMD are important focus points for the treatment of lumbar vertebral fractures. BioMed Central 2020-12-01 /pmc/articles/PMC7706188/ /pubmed/33256776 http://dx.doi.org/10.1186/s13018-020-02111-9 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research Article
Liu, Hao
Chen, Weikai
Zhang, Junxin
Jiang, Xiaomin
Yang, Huilin
Qu, Rui
Liu, Tao
Effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture
title Effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture
title_full Effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture
title_fullStr Effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture
title_full_unstemmed Effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture
title_short Effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture
title_sort effects of pedicle screw number and insertion depth on radiographic and functional outcomes in lumbar vertebral fracture
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7706188/
https://www.ncbi.nlm.nih.gov/pubmed/33256776
http://dx.doi.org/10.1186/s13018-020-02111-9
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