Biomechanical effects of cross-pin's diameter in reconstruction of anterior cruciate ligament – A specific case study via finite element analysis

Abidin, Nur Afikah Zainal; Ramlee, Muhammad Hanif; Rashid, Amir; Wui, Ng Bing; Seng, G; Kadir, Mohammed Rafiq Abdul

doi:10.1016/j.injury.2022.05.021

Cited by 5 publications

(4 citation statements)

References 47 publications

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“…High stress can lead to femoral stem fractures, whereas past research has mentioned that the failure of hip implants is caused by several circumstances, including increasing stress in the stem as a result of patients getting heavier, intense activity, or an undersized hip implant [37,42,43]. According to the FEA results (Figure 7), the topology optimisation approach in designing lightened hip implants revealed that hip implants with a Voronoi structure had the highest strength.…”

Section: Discussionmentioning

confidence: 98%

“…To achieve a similar configuration, 3D scanning was performed by using the Sense TM 3D Scanner (Sense 3D, 3D Devices, Inc., South California, USA) to assure a similar position of the bone and jig. In addition, the bone was assumed to be isotropic, homogeneous, and linearly elastic, with Young's modulus values and Poisson's ratio set at 735 MPa and 0.3, respectively, based on the researchers' previous experiments [37]. Based on the graph shown in Figure 6, displacement was observed during both experiments, and the accuracy of the prediction was determined by the calculation of standard deviations.…”

Section: Model Validationmentioning

confidence: 99%

“…experiments [37]. Based on the graph shown in Figure 6, displacement was observed during both experiments, and the accuracy of the prediction was determined by the calculation of standard deviations.…”

Section: Model Validationmentioning

confidence: 99%

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Biomechanical Effects of the Porous Structure of Gyroid and Voronoi Hip Implants: A Finite Element Analysis Using an Experimentally Validated Model

et al. 2023

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Total hip arthroplasty (THA) is most likely one of the most successful surgical procedures in medicine. It is estimated that three in four patients live beyond the first post-operative year, so appropriate surgery is needed to alleviate an otherwise long-standing suboptimal functional level. However, research has shown that during a complete THA procedure, a solid hip implant inserted in the femur can damage the main arterial supply of the cortex and damage the medullary space, leading to cortical bone resorption. Therefore, this study aimed to design a porous hip implant with a focus on providing more space for better osteointegration, improving the medullary revascularisation and blood circulation of patients. Based on a review of the literature, a lightweight implant design was developed by applying topology optimisation and changing the materials of the implant. Gyroid and Voronoi lattice structures and a solid hip implant (as a control) were designed. In total, three designs of hip implants were constructed by using SolidWorks and nTopology software version 2.31. Point loads were applied at the x, y and z-axis to imitate the stance phase condition. The forces represented were x = 320 N, y = −170 N, and z = −2850 N. The materials that were used in this study were titanium alloys. All of the designs were then simulated by using Marc Mentat software version 2020 (MSC Software Corporation, Munich, Germany) via a finite element method. Analysis of the study on topology optimisation demonstrated that the Voronoi lattice structure yielded the lowest von Mises stress and displacement values, at 313.96 MPa and 1.50 mm, respectively, with titanium alloys as the materials. The results also indicate that porous hip implants have the potential to be implemented for hip implant replacement, whereby the mechanical integrity is still preserved. This result will not only help orthopaedic surgeons to justify the design choices, but could also provide new insights for future studies in biomechanics.

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Section: Discussionmentioning

confidence: 98%

Section: Model Validationmentioning

confidence: 99%

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Biomechanical Effects of the Porous Structure of Gyroid and Voronoi Hip Implants: A Finite Element Analysis Using an Experimentally Validated Model

et al. 2023

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“…Typical examples of fixation devices producing a compression load to the longitudinal axis of the graft are interference screws or bone plugs. The cross pin (Rigidfix) system produces a bulging of the graft, and is therefore based on the expansion mechanism [17,18]. Fixation devices like buttons, Swing Bridges and Ligament Plates fix the graft by suspending the graft into the femoral tunnel [13].…”

Section: Introductionmentioning

confidence: 99%

The Development and Biomechanical Analysis of an Allograft Interference Screw for Anterior Cruciate Ligament Reconstruction

Lifka,

Rehberger,

Pastl

et al. 2023

Bioengineering

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Graft fixation during cruciate ligament reconstruction using interference screws is a common and frequently used surgical technique. These interference screws are usually made of metal or bioabsorbable materials. This paper describes the development of an allograft interference screw from cortical human bone. During the design of the screw, particular attention was paid to the choice of the screw drive and the screw shape, as well as the thread shape. Based on these parameters, a prototype was designed and manufactured. Subsequently, the first biomechanical tests using a bovine model were performed. The test procedure comprised a torsion test to determine the ultimate failure torque of the screw and the insertion torque during graft fixation, as well as a pull-out test to asses the ultimate failure load of the graft fixation. The results of the biomechanical analysis showed that the mean value of the ultimate failure torque was 2633 Nmm, whereas the mean occurring insertion torque during graft fixation was only 1125 Nmm. The mean ultimate failure load of the graft fixation was approximately 235 N. The results of this work show a good overall performance of the allograft screw compared to conventional screws, and should serve as a starting point for further detailed investigations and studies.

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Convergence Study of Three-Dimensional Upper Skull Model: A Finite Element Method

Mohamad Azmi,

Abdullah,

Mohd Salaha

et al. 2023

Communications in Computer and Information Science

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Biomechanical effects of cross-pin's diameter in reconstruction of anterior cruciate ligament – A specific case study via finite element analysis

Cited by 5 publications

References 47 publications

Biomechanical Effects of the Porous Structure of Gyroid and Voronoi Hip Implants: A Finite Element Analysis Using an Experimentally Validated Model

Biomechanical Effects of the Porous Structure of Gyroid and Voronoi Hip Implants: A Finite Element Analysis Using an Experimentally Validated Model

The Development and Biomechanical Analysis of an Allograft Interference Screw for Anterior Cruciate Ligament Reconstruction

Convergence Study of Three-Dimensional Upper Skull Model: A Finite Element Method

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