Pedicle screw fixation with kyphoplasty decreases the fracture risk of the treated and adjacent non-treated vertebral bodies: a finite element analysis / 华中科技大学学报(医学)(英德文版)
Journal of Huazhong University of Science and Technology (Medical Sciences)
; (6): 887-894, 2016.
Article
de En
| WPRIM
| ID: wpr-238434
Bibliothèque responsable:
WPRO
ABSTRACT
Adjacent vertebral fractures are common in patients with osteoporotic vertebral compression fractures (OVCFs) after kyphoplasty. This finite element study was to examine whether short segment pedicle screw fixation (PSF) with kyphoplasty may decrease the fracture risk of the treated and adjacent non-treated vertebrae after kyphoplasty for OVCFs. By simulating cement augmentation with or without short segment pedicle screw fixation (PSF), two tridimensional, anatomically detailed finite element models of the T10-L2 functional spinal junction were developed. The insertion of pedicle screws into the intact vertebra apparently decreased the stress distribution of the treated vertebra in vertical compression and other load situations. The stress distribution in the bone structures of the intact vertebra adjacent to the intact-screwed vertebra was much less than that in the one adjacent to the treated vertebra. The insertion of pedicle screws into the intact vertebra greatly decreased the maximum displacement of the cortical bones and cancellous bones of the vertebrae. Our results indicated that short segment PSF with kyphoplasty may decrease the fracture risk of the treated and adjacent non-treated vertebrae in the management of OVCFs.
Mots clés
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Complications postopératoires
/
Rachis
/
Chirurgie générale
/
Simulation numérique
/
Imagerie diagnostique
/
Fractures du rachis
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Analyse des éléments finis
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Fractures ostéoporotiques
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Cyphoplastie
/
Vis pédiculaires
Type d'étude:
Diagnostic_studies
/
Etiology_studies
Limites du sujet:
Humans
langue:
En
Texte intégral:
Journal of Huazhong University of Science and Technology (Medical Sciences)
Année:
2016
Type:
Article