Pedicle Screw Fixation with Kyphoplasty Decreases the Fracture Risk of the Treated and Adjacent Non-treated Vertebral Bodies:a Finite Element Analysis
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-tr...
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Published in | 华中科技大学学报:医学英德文版 no. 6; pp. 887 - 894 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
2016
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Online Access | Get full text |
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Summary: | 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. |
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Bibliography: | 42-1679/R Pan YANG;Ying ZHANG;Huan-wen DING;Jian LIU;Lin-qiang YE;Jin XIAO;Qiang TU;Tao YANG;Fei WANG;Guo-gang SUN;Orthopedic Hospital,Guangzhou General Hospital of People’s Liberation Army;Department of Orthopedics,Chongqing Traditional Chinese Medicine Hospital (the First People′s Hospital of Chongqing);Department of Spinal Surgery,the First Affiliated Hospital of Guangzhou University of Chinese Medicine;Department of Anatomy,Southwest Medical University |
ISSN: | 1672-0733 1993-1352 |