3D patient-specific model of the tibia from CT for orthopedic use

González-Carbonell, Raide A.; Ortiz-Prado, Armando; Jacobo-Armendáriz, Víctor Hugo; Cisneros-Hidalgo, Y. A.; Alpizar-Aguirre, A

doi:10.1016/j.jor.2015.01.009

Cited by 14 publications

(6 citation statements)

References 30 publications

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“…However, their study was based on an axial view from CT, which does not intuitively simulate surgery. Although Gonzalez-Carbonell et al [17] used 3D technology to simulate the tibial model, their study focused on the distribution of tibial force by torsion and did not include clinical results. In the present study, we established a 3D model of the tibia and strictly simulated extramedullary system osteotomy, which is consistent with surgery.…”

Section: Discussionmentioning

confidence: 99%

Analysis of the effect of tibial torsion on tibial osteotomy in knee arthroplasty using a three-dimensional computed tomography-based modelling technique

Gao

Lu-Ding

et al. 2019

BMC Musculoskelet Disord

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Background Extramedullary systems are commonly used in knee arthroplasty, with the rod location being determined from the tibial torsion line during surgery. The traditional method for tibial torsion measurement is not in accordance with clinical practice. This study aimed to evaluate proximal and distal tibial torsion using 3-dimensional (3D) computed technology to establish a new evaluation method, as well as to investigate the association between tibial torsion and postoperative alignment deviation. Methods Fifty-five osteoarthritis tibias with >10°varus preoperatively were divided into valgus, neutral, and varus groups based on their postoperative alignment deviation. A new method based on clinical practice was built using a 3D tibial model. Proximal and distal tibial torsions were measured by both the new and traditional methods. In addition, tibial osteotomy that followed the intramedullary osteotomy system was simulated on the 3D model in the varus and valgus groups to investigate the association between tibial torsion and alignment deviation. Results Proximal tibial torsion was smaller and distal torsion was greater in the valgus group than the other two groups, according to the new method ( p = 0.03 and p = 0.02, respectively). No significant difference was found when comparing these torsions by the traditional method ( p = 0.782 and p = 0.753, respectively). In the valgus group, the postoperative alignment deviation improved after simulated osteotomy guided by the intramedullary system, while no significant improvement was found in the varus group. Conclusion According to this new tibial-rotation evaluation method, valgus deviation in knee arthroplasty was identified as the main cause for knees in which the proximal tibial internal torsion is too small and the distal external torsion is too great. The use of an intramedullary system may help reduce this deviation. Trial registration Prospectively registered.

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Section: Discussionmentioning

confidence: 99%

Analysis of the effect of tibial torsion on tibial osteotomy in knee arthroplasty using a three-dimensional computed tomography-based modelling technique

Gao

Lu-Ding

et al. 2019

BMC Musculoskelet Disord

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“…The tooth is having a complex structure and composed of three different parts, that is, enamel, dentine and pulp. For accurate analysis the biomechanical 17 modelling of the tooth is necessary. In contrast to other studies 9,11,13,18,19 biomechanical modelling of the tooth is adopted in this study and hence the volumetric mesh is generated on the bases of the tooth anatomy by analysing material density using CBCT scan images.…”

Section: Introductionmentioning

confidence: 99%

Effect of volumetric shrinkage of restorative materials on tooth structure: A finite element analysis

Nayak

Jain

Kankar

et al. 2021

Proc Inst Mech Eng H

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Post-treatment coronal hermetic seal of the root canal opening prevents the food or saliva which assist to achieve successful endodontic treatment. Gutta-percha is filled in the inner canal, that is, from cervical third to apical third. Gutta-percha does not provide the hermetic seal because it does not bound with dentine walls. Various new restorative materials have been developed in the last 6–7 decade but drawback related to the polymerization shrinkage of the composite resin remains a clinical problem. In general, dental composites having volumetric shrinkage of the material depends on its formulation and curing conditions. In this article, the effect of this polymerization shrinkage on the tooth structure has been studied.

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“…Biomechanical analysis contributes to study the behavior of the human body under different loading conditions 9,10 . In this direction, Sansur et al 3 were the first to perform a comparative study between conventional transpedicular fixation and cortical fixation following the physiological stresses in the osteoporotic lumbar spine.…”

Section: Introductionmentioning

confidence: 99%

Comportamiento biomecánico de tejido óseo en fijaciones de columna

Alpizar-Aguirre¹,

González-Carbonell²,

Ortiz-Prado³

et al. 2020

CIRU

Self Cite

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Background:The mechanical fixation of the spine in patients with osteoporotic vertebral degeneration is a challenge for surgeons, the vertebrae selected to insert the screws may fail, endangering health and even patient's life. Objective: The objective of the study was to study the effect of the variation of the bone density in the bone-screw interface from a three-dimensional model of the lumbar section. Materials and methods: The finite element method was used to model the behavior of the lumbar vertebral section when applying compression loads. Results: The stresses between 2 and 3 MPa were located on the contact surface with the screw, both in the vertebral body and in the apophysis, being slightly higher in the vertebral body. Conclusions: Regardless of bone density, the contact zones between the screws are susceptible to bone tissue failure. The posterior half of the vertebral body was the most sensitive to high values of stress, while in the areas furthest from the axis of the screw stress tended to their minimum.

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3D patient-specific model of the tibia from CT for orthopedic use

Cited by 14 publications

References 30 publications

Analysis of the effect of tibial torsion on tibial osteotomy in knee arthroplasty using a three-dimensional computed tomography-based modelling technique

Analysis of the effect of tibial torsion on tibial osteotomy in knee arthroplasty using a three-dimensional computed tomography-based modelling technique

Effect of volumetric shrinkage of restorative materials on tooth structure: A finite element analysis

Comportamiento biomecánico de tejido óseo en fijaciones de columna

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