Development and biomechanical analysis of an axially controlled compression spinal rod for lumbar spondylolysis
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Le résumé fourni par la source
BACKGROUND: To elucidate the differences in mechanical performance between a novel axially controlled compression spinal rod (ACCSR) for lumbar spondylolysis (LS) and the common spinal rod (CSR). METHODS: A total of 36 ACCSRs and 36 CSRs from the same batch were used in this study, each with a diameter of 6.0 mm. Biomechanical tests were carried out on spinal rods for the ACCSR group and on pedicle screw-rod internal fixation systems for the CSR group. The spinal rod tests were conducted following the guidelines outlined in the American Society for Testing and Materials (ASTM) F 2193, while the pedicle screw-rod internal fixation system tests adhered to ASTM F 1798-97 standards. RESULTS: The stiffness of ACCSR and CSR was 1559.15 ± 50.15 and 3788.86 ± 156.45 N/mm (P < .001). ACCSR's yield load was 1345.73 (1297.90-1359.97) N, whereas CSR's was 4046.83 (3805.8-4072.53) N (P = .002). ACCSR's load in the 2.5 millionth cycle of the fatigue four-point bending test was 320 N. The axial gripping capacity of ACCSR and CSR was 1632.53 ± 165.64 and 1273.62 ± 205.63 N (P = .004). ACCSR's torsional gripping capacity was 3.45 (3.23-3.47) Nm, while CSR's was 3.27 (3.07-3.59) Nm (P = .654). The stiffness of the pedicle screws of the ACCSR and CSR group was 783.83 (775.67-798.94) and 773.14 (758.70-783.62) N/mm (P = .085). The yield loads on the pedicle screws of the ACCSR and CSR group was 1345.73 (1297.90-1359.97) and 4046.83 (3805.8-4072.53) N (P = .099). CONCLUSION: Although ACCSR exhibited lower yield load, stiffness, and fatigue resistance compared to CSR, it demonstrated significantly higher axial gripping capacity and met the stress requirement of the human isthmus. Consequently, ACCSR presents a promising alternative to CSR for LS remediation.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Development and biomechanical analysis of an axially controlled compression spinal rod for lumbar spondylolysis
- Date Crossref
- 07/06/2024
- Éditeur
- Ovid Technologies (Wolters Kluwer Health)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Yunnan Province Science and Technology Department pays non établi dans la noticeOrganisme public
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Dali University pays non établi dans la noticeUniversité ou école supérieure
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Department of Orthopaedic Surgery pays non établi dans la noticeInstitution
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103:23(e38520) pays non établi dans la noticeInstitution
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Clinical Key Subject Construction Project of PLA pays non établi dans la noticeÉtablissement de santé
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Funds of Yunnan Provincial Healthcare Commission Trauma Orthopaedic Clinical Medical Center [grant number: ZX2019001-01] pays non établi dans la noticeÉtablissement de santé
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How to cite this article: Li J pays non établi dans la noticeInstitution
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The study was funded by the Grants from Yunnan Orthopedics and Sports Rehabilitation Clinical Medicine Research Center [grant number: 202102AA310068] pays non établi dans la noticeStructure de recherche
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Yunnan Province Young and Middle-aged Academic and Technical Leaders Reserve Talent Project [grant number:202405AC350079] pays non établi dans la noticeInstitution
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Yunnan Prvincial Clinical Orthopaedic Trauma Medical Center pays non établi dans la noticeÉtablissement de santé
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the 920 Hospital Science and Technology Plan Project [grant number: 2019YGB06] pays non établi dans la noticeÉtablissement de santé
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the Science and Technology Plan Project of Yunnan Provincial Department of Science and Technology [grant number: 202101AY070001-295] pays non établi dans la noticeInstitution
Yunnan Province Science and Technology Department, Dali University et Department of Orthopaedic Surgery, avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.