Yeditepe spine mesh: Finite element modeling and validation of a parametric CAD model of lumbar spine

Güldeniz, Oğulcan; Yesil, Onur Berke; Okyar, A. Fethi

doi:10.1016/j.medengphy.2022.103911

Cited by 6 publications

(4 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Building on other recent studies, we have considered nonlinear elastics properties and tetrahedral element type for the model due to computational resource limitations. We aim to incorporate more realistic lumbar spine modeling in our future studies 52–55 . In addition, based on the data from different individuals and multiple models of the lumbar spine will help to validate the results of the FE studies.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Stress Distribution of Different Pedicle Screw Insertion Techniques Following Single‐Segment TLIF: A Finite Element Analysis Study

Yang

Sun

Zhang

et al. 2023

Orthopaedic Surgery

View full text Add to dashboard Cite

Objectives: At present, a variety of posterior lumbar internal fixation implantation methods have been developed, which makes it difficult for spine surgeons to choose. The stress distribution of the internal fixation system is one of the important indexes to evaluate these technologies. Common insertion technologies include Roy Camille, Magerl, Krag, AO, and Weinstein insertion techniques. This study aimed to compare the distribution of von Mises stresses in different screw fixation systems established by these insertion technologies.Methods: Here, the three-dimensional finite element (FE) method was selected to evaluate the postoperative stress distribution of internal fixation. Following different pedicle screw insertion techniques, five single-segment transforaminal lumbar interbody fusion (TLIF) models were established after modeling and validation of the L1-S1 vertebrae FE model. Results:By analyzing the data, we found that stress concentration phenomenon was in all the models. Additionally, Roy-Camille, Krag, AO, and Weinstein insertion techniques led to the great stress on lumbar vertebra, intervertebral disc, and screw-rod fixation systems. Therefore, we hope that the results can provide ideas for clinical work and development of pedicle screws in the future. It is worth noting that flexion, unaffected side lateral bending, and affected side axial rotation should be limited for the patients with cages implanted.Conclusions: Overall, our method obtained the results that Magerl insertion technique was the relatively safe approach for pedicle screw implantation due to its relatively dispersive stress in TLIF models.

show abstract

Section: Discussionmentioning

confidence: 99%

“…We aim to incorporate more realistic lumbar spine modeling in our future studies. [52][53][54][55] In addition, based on the data from different individuals and multiple models of the lumbar spine will help to validate the results of the FE studies.…”

Section: Strengths and Limitationsmentioning

confidence: 99%

Stress Distribution of Different Pedicle Screw Insertion Techniques Following Single‐Segment TLIF: A Finite Element Analysis Study

Yang

Sun

Zhang

et al. 2023

Orthopaedic Surgery

View full text Add to dashboard Cite

show abstract

“…Furthermore, elastic behaviour was assumed to model the intervertebral discs, whereas most current tend to model the discs with hyperelastic behaviours (Jaramillo et Garcia, 2017;Guldeniz et al, 2022;Vinyas et al, 2023). Xie et al showed that this modelling approach can lead to higher ROM for the spinal segments.…”

Section: Discussionmentioning

confidence: 99%

Study of mechanical effects of lumbar disc arthroplasty on facet joints at the index level/adjacent levels by using a validated finite element analysis

Zot,

Ben-Brahim,

Severyns

et al. 2023

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

Introduction: Lumbar disc arthroplasty is a surgical procedure designed to treat degenerative disc disease by replacing the affected disc with a mobile prosthesis. Several types of implants fall under the term total disc replacement, such as ball-and-socket, mobile core or elastic prostheses. Some studies have shown that facet arthritis can develop after arthroplasty, without much precision on the mechanical impact of the different implant technologies on the facet joints. This study aims to create validated patient-specific finite element models of the intact and post-arthroplasty lumbar spine in order to compare the mechanical response of ball-and-socket and elastic prostheses.Methods: Intact models were developed from CT-scans of human lumbar spine specimens (L4-S1), and arthroplasty models were obtained by replacing the L4-L5 disc with total disc replacement implants. Pure moments were applied to reproduce physiological loadings of flexion/extension, lateral bending and axial rotation.Results: Models with ball-and-socket prosthesis showed increased values in both range of motion and pressure at the index level and lower values at the adjacent level. The mechanical behaviour of the elastic prosthesis and intact models were comparable. The dissipated friction energy in the facet joints followed a similar trend.Conclusion: Although both implants responded to the total disc replacement designation, the mechanical effects in terms of range of motion and facet joint loads varied significantly not only between prostheses but also between specimens. This confirms the interest that patient-specific surgical planning using finite element analysis could have in helping surgeons to choose the appropriate implant for each patient.

show abstract

“…Much research has been carried out to study the behavior of ISPs and the biomechanics of the column using the finite element method (FEM) [24][25][26][27][28][29]. FEM has lower costs and higher efficiency than in vivo and in vitro experiments [24].…”

Section: Introductionmentioning

confidence: 99%

Numerical Assessment of Interspinous Spacers for Lumbar Spine

Hernández-Ortega,

Torres-SanMiguel,

Alcántara-Arreola

et al. 2023

Prosthesis

View full text Add to dashboard Cite

Interspinous spacers are a minimally invasive surgical device for treating degenerative lumbar diseases, limiting spinal extension, and decreasing pressures within the disc and facets, relieving symptoms caused by lumbar spinal stenosis. This work uses the finite element method to calculate the stresses and deformations of an interspinous spacer with steel wire clamping. The cables also provide an easier way to set up the device. The reconstruction of the model was undertaken by computerized tomography, considering a person with average Mexican height (1.64 m) and a mass index grade of 2 (108 kg). The maximum movements reported in the literature were used for the range of motion. The interspinous spacer increases in a ratio of 2.7 times the stresses. Still, these stresses are generated in the prosthesis, which causes the vertebrae to be relieved since the forces and pressures are reduced. Deformations decrease by 53% with the reduction of the range of motion. Therefore, the prosthesis provides excellent stability for the vertebrae.

show abstract

Yeditepe spine mesh: Finite element modeling and validation of a parametric CAD model of lumbar spine

Cited by 6 publications

References 50 publications

Stress Distribution of Different Pedicle Screw Insertion Techniques Following Single‐Segment TLIF: A Finite Element Analysis Study

Stress Distribution of Different Pedicle Screw Insertion Techniques Following Single‐Segment TLIF: A Finite Element Analysis Study

Study of mechanical effects of lumbar disc arthroplasty on facet joints at the index level/adjacent levels by using a validated finite element analysis

Numerical Assessment of Interspinous Spacers for Lumbar Spine

Contact Info

Product

Resources

About