Finite element analysis of bone and implant stresses for customized 3D-printed orthopaedic implants in fracture fixation

Yan, Liang; Lim, Jimmy; Lee, Jun Wei; Tia, Clement Shi Hao; O’Neill, Gavin Kane; Chong, D.Y.R.

doi:10.1007/s11517-019-02104-9

Cited by 38 publications

(18 citation statements)

References 22 publications

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“…Device stress and bone stress had been used to evaluate the failure risk of fixation devices and bones respectively (Antoniac et al, 2019;Yan et al, 2020). In the present study, the six holes plate with insertion of six locking screws (6H6LS) revealed lower device stress and bone stress than the six holes plate with insertion of four locking screws and two dynamic screws (6H4LS2DS).…”

Section: Discussionmentioning

confidence: 64%

“…However, it is quite difficult to accurately control the variations in bone anatomy, bone density, osteotomy site, and fixation method (Arand et al, 2018;Lee et al, 2017). Fortunately, a computational approach, which uses finite element method, is one of possible ways to accurately control all the variations (Shih et al, 2020;Yan et al, 2020). Past studies had investigated the biomechanics of hallux valgus deformity using finite element analysis.…”

Section: Introductionmentioning

confidence: 99%

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Biomechanical evaluation of different hallux valgus treatment with plate fixations using single first metatarsal bone model and musculoskeletal lower extremity model

Shih

Hsu

Lin

et al. 2021

JBSE

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Biomechanical evaluation of different hallux valgus treatmentwith plate fixations using single first metatarsal bone model and musculoskeletal lower extremity model Abstract A numerical approach is one of feasible ways to discover the biomechanics of hallux valgus deformity with various osteotomy and fixation strategies. In the present study, two types of finite element models for analyzing the biomechanical performances of hallux valgus treatment with plate fixations were developed including the single first metatarsal bone model and the musculoskeletal lower extremity model. There are four types of plate fixations that were used to correct the deformity of hallux valgus. The strengths and limitations of both the single first metatarsal bone model and the musculoskeletal lower extremity model were evaluated and discussed. The results revealed that the single metatarsal bone models can be used to quickly predict the biomechanical performances of different hallux valgus treatments. Additionally, the musculoskeletal lower extremity models can be used to predict the biomechanical performances of different hallux valgus treatments under a physiological loading. The plate fixations with the insertion of all locking screws revealed better osteotomy fixation stability and lower risk of the implant failure compared to the other fixations. Additionally, the plate fixations with the insertion of six bone screws had lower risk of the metatarsal bone failure compared to the plate fixations with the insertion of four bone screws. The six holes plate with the insertion of six locking screws was the best treatment among the four treatment strategies. The numerical models and simulation techniques developed in the present study can provide useful information for understanding the biomechanics of hallux valgus treatments.

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Section: Discussionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Biomechanical evaluation of different hallux valgus treatment with plate fixations using single first metatarsal bone model and musculoskeletal lower extremity model

Shih

Hsu

Lin

et al. 2021

JBSE

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“…Fully porous cellular Ti-6Al-4V structures have been produced [5,6], which allow bony in-growth when used as an orthopedic implant. This porosity has a secondary effect of reducing the Young's modulus of the manufactured construct, thus helping minimize the problem of stress shielding [7].…”

Section: Introductionmentioning

confidence: 99%

Post-Processing and Surface Characterization of Additively Manufactured Stainless Steel 316L Lattice: Implications for BioMedical Use

et al. 2021

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Additive manufacturing of stainless steel is becoming increasingly accessible, allowing for the customisation of structure and surface characteristics; there is little guidance for the post-processing of these metals. We carried out this study to ascertain the effects of various combinations of post-processing methods on the surface of an additively manufactured stainless steel 316L lattice. We also characterized the nature of residual surface particles found after these processes via energy-dispersive X-ray spectroscopy. Finally, we measured the surface roughness of the post-processing lattices via digital microscopy. The native lattices had a predictably high surface roughness from partially molten particles. Sandblasting effectively removed this but damaged the surface, introducing a peel-off layer, as well as leaving surface residue from the glass beads used. The addition of either abrasive polishing or electropolishing removed the peel-off layer but introduced other surface deficiencies making it more susceptible to corrosion. Finally, when electropolishing was performed after the above processes, there was a significant reduction in residual surface particles. The constitution of the particulate debris as well as the lattice surface roughness following each post-processing method varied, with potential implications for clinical use. The work provides a good base for future development of post-processing methods for additively manufactured stainless steel.

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“…3D printing is an important manufacturing technology to fabricate objects with a net shape in a single process through the adhesion of various materials [1][2][3]. Owing to the benefit of the customizable net shape fabrication method, the 3D printing process has been widely applied in practical medical research from customized artificial organs to teeth or bones [4][5][6][7][8][9][10][11][12][13][14][15][16]. In the field of practical orthopedic surgery, metal 3D printing is more often utilized.…”

Section: Introductionmentioning

confidence: 99%

In vivo analysis of post-joint-preserving surgery fracture of 3D-printed Ti-6Al-4V implant to treat bone cancer

et al. 2021

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Cancer growth in the bone due to its random shape disables bone strength and thus changes its capacity to support body weight or muscles, which can crucially affect the quality of human life in terms of normal walking or daily activities. For successful patient recovery, it is necessary to remove the cancer-affected minimal bone area and quickly replace it with a biocompatible metal implant within less than 2 weeks. An electron beam-melted Ti-6Al-4V implant was designed and applied in a patient to preserve the natural knee joint close to the bone tumor. The developed implant fits the bone defect well, and the independent ambulatory function of the natural knee joint was restored in the patient within six weeks after surgery. A delayed fracture occurred six months after the successful replacement of cancer-affected bone with Ti-6Al-4V implant at the proximal meshed junction of the implant because of a minor downward slip. Microstructural, mechanical, and computational analyses were conducted for the fractured area to find the main reason for the delayed fracture. Our findings pertaining to the mechanical and material investigation can help realize the safe implantation of the three-dimensionally printed titanium implant to preserve the natural joints of patients with massive bone defects of the extremities.

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Finite element analysis of bone and implant stresses for customized 3D-printed orthopaedic implants in fracture fixation

Cited by 38 publications

References 22 publications

Biomechanical evaluation of different hallux valgus treatment with plate fixations using single first metatarsal bone model and musculoskeletal lower extremity model

Biomechanical evaluation of different hallux valgus treatment with plate fixations using single first metatarsal bone model and musculoskeletal lower extremity model

Post-Processing and Surface Characterization of Additively Manufactured Stainless Steel 316L Lattice: Implications for BioMedical Use

In vivo analysis of post-joint-preserving surgery fracture of 3D-printed Ti-6Al-4V implant to treat bone cancer

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