2023
DOI: 10.1186/s12891-023-06201-7
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Biomechanical evaluation of different sizes of 3D printed cage in lumbar interbody fusion-a finite element analysis

Abstract: Objective To study the biomechanical characteristics of various tissue structures of different sizes of 3D printed Cage in lumbar interbody fusion. Methods A finite element model of normal spine was reconstructed and verified. Pedicle screws and Cage of different sizes were implanted in the L4/5 segment to simulate lumbar interbody fusion. The range of motion of the fixed and cephalic adjacent segment, the stress of the screw-rod system, the stress… Show more

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Cited by 8 publications
(11 citation statements)
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“…The volunteer signed informed consent forms in accordance with the relevant regulations, which were submitted it to the Ethics Committee of Tianjin Hospital for approval. All clinical investigations were conducted in strict accordance with the principles of the Declaration of Helsinki [ 29 ].…”
Section: Methodsmentioning
confidence: 99%
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“…The volunteer signed informed consent forms in accordance with the relevant regulations, which were submitted it to the Ethics Committee of Tianjin Hospital for approval. All clinical investigations were conducted in strict accordance with the principles of the Declaration of Helsinki [ 29 ].…”
Section: Methodsmentioning
confidence: 99%
“…The redundant triangular surfaces were removed to generate more detailed 3D images, and the structures of facet joints, intervertebral discs and nucleus pulposus were initially constructed [ 32 ]. Then the lumbar model was imported into GeomagicStudio12.0 (Geomagic Inc., USA), and the solid model was constructed by using the functions of smoothing, accurate surface, editing contour, constructing surface patch, constructing grille, and so on, and exported in iges format [ 29 ]. After that, the more accurate model was imported into Hypermesh2017 (Altair Engineering, Troy, Michigan, USA) for mesh division and construction of seven ligament (ALL: anterior longitudinal ligament; PLL: posterior longitudinal ligament; LF: ligamentum flavum; CL: capsular ligament; ISL: interspinous ligament; SSL: supraspinous ligament; ITL: Intertransverse ligament).…”
Section: Methodsmentioning
confidence: 99%
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“…As the process for obtaining regulatory approval for 3D-printed medical devices changes, concerns regarding their efficacy and safety are emerging. The effectiveness and safety of these devices need to be further investigated, and regulatory organizations need to create standards and procedures for their approval [105]. Due to the bespoke nature of 3D-printed medical devices, the regulatory approval procedure is difficult and time-consuming.…”
Section: Regulatory Approvalmentioning
confidence: 99%