The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis
Abstract Background To evaluate the biomechanical properties of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture using a finite element analysis. Methods The Universal Spine System (USS) fixation model for adjacent upper and lower ver...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2020-11-01
|
| Series: | Journal of Orthopaedic Surgery and Research |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13018-020-02024-7 |
| _version_ | 1798038252633980928 |
|---|---|
| author | Jifeng Liu Sheng Yang Fei Zhou Jianmin Lu Chunyang Xia Huanhuan Wang Chao Chen |
| author_facet | Jifeng Liu Sheng Yang Fei Zhou Jianmin Lu Chunyang Xia Huanhuan Wang Chao Chen |
| author_sort | Jifeng Liu |
| collection | DOAJ |
| description | Abstract Background To evaluate the biomechanical properties of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture using a finite element analysis. Methods The Universal Spine System (USS) fixation model for adjacent upper and lower vertebrae (T12 and L2) of lumbar 1 vertebra burst fracture was established. During flexion/extension, lateral bending, and rotation, the screw stress and the displacement of bone defect area of the injured vertebrae were evaluated when the downward inserted angle between the long axis of the screws and superior endplate of the adjacent vertebrae was set to 0° (group A), 5° (group B), 10° (group C), and 15°(group D). There were 6 models in each group. Results There were no significant differences in the maximum screw stress among all the groups during flexion/extension, lateral bending, and rotation (P > 0.05). There were no significant differences in the maximum displacement of the bone defect area of the injured vertebrae among all the groups during flexion/extension, lateral bending, and rotation (P > 0.05). Conclusion Short-segment Schanz screw implanted in an oblique downward direction with different angles (0°/parellel, 5°, 10°, and 15°) did not change the maximum stress of the screws, and there was a lower risk of screw breakage in all groups during flexion/extension, lateral bending, and rotation. In addition, the displacement of the injured vertebra defect area had no significant changes with the change of angles. |
| first_indexed | 2024-04-11T21:37:42Z |
| format | Article |
| id | doaj.art-9bbe29f280a547b69bd8333dbfe6f38d |
| institution | Directory Open Access Journal |
| issn | 1749-799X |
| language | English |
| last_indexed | 2024-04-11T21:37:42Z |
| publishDate | 2020-11-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Orthopaedic Surgery and Research |
| spelling | doaj.art-9bbe29f280a547b69bd8333dbfe6f38d2022-12-22T04:01:42ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2020-11-0115111110.1186/s13018-020-02024-7The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysisJifeng Liu0Sheng Yang1Fei Zhou2Jianmin Lu3Chunyang Xia4Huanhuan Wang5Chao Chen6Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian UniversityDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian UniversityDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian UniversityDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian UniversityDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian UniversityDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian UniversityDepartment of Orthopaedics, Affiliated Zhongshan Hospital of Dalian UniversityAbstract Background To evaluate the biomechanical properties of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture using a finite element analysis. Methods The Universal Spine System (USS) fixation model for adjacent upper and lower vertebrae (T12 and L2) of lumbar 1 vertebra burst fracture was established. During flexion/extension, lateral bending, and rotation, the screw stress and the displacement of bone defect area of the injured vertebrae were evaluated when the downward inserted angle between the long axis of the screws and superior endplate of the adjacent vertebrae was set to 0° (group A), 5° (group B), 10° (group C), and 15°(group D). There were 6 models in each group. Results There were no significant differences in the maximum screw stress among all the groups during flexion/extension, lateral bending, and rotation (P > 0.05). There were no significant differences in the maximum displacement of the bone defect area of the injured vertebrae among all the groups during flexion/extension, lateral bending, and rotation (P > 0.05). Conclusion Short-segment Schanz screw implanted in an oblique downward direction with different angles (0°/parellel, 5°, 10°, and 15°) did not change the maximum stress of the screws, and there was a lower risk of screw breakage in all groups during flexion/extension, lateral bending, and rotation. In addition, the displacement of the injured vertebra defect area had no significant changes with the change of angles.http://link.springer.com/article/10.1186/s13018-020-02024-7Lumbar burst fractureSchanz screwOblique downward directionBiomechanics |
| spellingShingle | Jifeng Liu Sheng Yang Fei Zhou Jianmin Lu Chunyang Xia Huanhuan Wang Chao Chen The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis Journal of Orthopaedic Surgery and Research Lumbar burst fracture Schanz screw Oblique downward direction Biomechanics |
| title | The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis |
| title_full | The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis |
| title_fullStr | The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis |
| title_full_unstemmed | The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis |
| title_short | The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis |
| title_sort | feasibility of short segment schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture a finite element analysis |
| topic | Lumbar burst fracture Schanz screw Oblique downward direction Biomechanics |
| url | http://link.springer.com/article/10.1186/s13018-020-02024-7 |
| work_keys_str_mv | AT jifengliu thefeasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT shengyang thefeasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT feizhou thefeasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT jianminlu thefeasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT chunyangxia thefeasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT huanhuanwang thefeasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT chaochen thefeasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT jifengliu feasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT shengyang feasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT feizhou feasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT jianminlu feasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT chunyangxia feasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT huanhuanwang feasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis AT chaochen feasibilityofshortsegmentschanzscrewimplantedinanobliquedownwarddirectionforthetreatmentoflumbar1burstfractureafiniteelementanalysis |