Therapeutic effect of magnetic nanoparticles on calcium silicate bioceramic in alternating field for biomedical application

Salmani, Mohammad Mehdi; Hashemian, Mohammad; Khandan, Amirsalar

doi:10.1016/j.ceramint.2020.07.215

Cited by 42 publications

(17 citation statements)

References 44 publications

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“…In this study, the author loaded collagen microsphere containing BG nanopowder with different content of doped Ce into PCL fibrous scaffolds and their bioactivity and biocompatibility were evaluated in detail. The results confirmed the positive effect of the combination of Ce doped BG nanoparticles encapsulated collagen microspheres on the bioactivity and cell performance of PCL fibers for bone tissue engineering applications 41–62 …”

Section: Resultssupporting

confidence: 61%

Fabrication of fibrous poly (ɛ‐caprolactone) nano‐fibers containing cerium doped‐bioglasses nanoparticles encapsulated collagen

Sahrapeyma

Asefnejad

Azami

et al. 2021

J of Applied Polymer Sci

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Novel nanosized designed ceramic powders, cerium (Ce) doped bioglass (BG) with various doped Ce content, were synthesized by sol-gel method in order to be employed in the development of PCL fibrous scaffold for bone tissue engineering applications. Characterization techniques such as X-ray diffraction analysis, transmission electron microscopy, Fourier transform infrared spectroscopy, and energy-dispersive X-ray spectroscopy were employed to evaluate the developed Ce doped BG powders. The results confirmed successful doping of Ce inside BG structure. 0, 1, 3, and 10 wt% Ce doped 58S BG were successfully encapsulated in the collagen microspheres by water-in-oil emulsion method and the average particle size and hydrodynamic diameter of microspheres were determined using scanning electron microscopy and dynamic light scattering analysis, respectively. Next, 0, 1, 3, and 10 wt% Ce doped 58S BG encapsulated collagen microspheres were loaded inside the Poly(ϵ-caprolactone) fibrous scaf-

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Section: Resultssupporting

confidence: 61%

Fabrication of fibrous poly (ɛ‐caprolactone) nano‐fibers containing cerium doped‐bioglasses nanoparticles encapsulated collagen

Sahrapeyma

Asefnejad

Azami

et al. 2021

J of Applied Polymer Sci

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“…Then, the relative displacement of the head and shaft fragments between the fracture ends, which was used to evaluate the support effects, was calculated by measuring the displacement in each direction of the XYZ axis. Finally, the von Mises stress (VMS) distribution and the displacement of the four different models were plotted as a nephogram [ 30 – 32 ]. These parameters were used to capture the mechanical factors involved in the fixation stability and fracture healing [ 33 ].…”

Section: Methodsmentioning

confidence: 99%

Finite element analysis of different locking plate fixation methods for the treatment of ulnar head fracture

et al. 2021

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Background Ulnar head fractures are increasingly higher with the growing proportion of the elderly people. Failure to achieve a stable anatomic reduction of ulna head fracture may lead to a distal radioulnar joint (DRUJ) dysfunction and nonunion of the distal radius. Due to the lack of the postoperative reporting outcomes and the biomechanical studies, it has not been well established about the optimal management of the comminuted distal ulna head fracture. Hence, the purpose of this study is to use finite element analysis to explain the advantages and disadvantages of ulnar-side locking plate fixation compared with dorsal-side locking plate fixation and its screw arrangement in the treatment of ulnar head fractures. Methods FE models of the ulnar head fracture and the models of ulnar-side locking plate and dorsal-side plate with two or three distal screws was constructed. In order to simulate forces acting on the ulnar and the osteosynthesis material during daily-life activity in subjects who underwent reconstructive surgery, we applied three loading conditions to each model, viz. 20 N axial compression, 50 N axial compression, 1 N∙m torsion moment, 1 N∙m lateral bending moments, and 1 N∙m extension bending moments. Under these conditions, values of the von Mises stress (VMS) distribution of the implant, peak VMS, the relative displacement of the head and shaft fragments between the fracture ends and the displacement and its direction of the models were investigated. Results The stress values of ulnar-side plates were lower than those of dorsal-side plates. And the ulnar-plate fixation system also has smaller maximum displacement and relative displacement. When adding a screw in the middle hole of the ulnar head, the values of model displacement and the peak stress in fixation system are lower, but it may evidently concentrate the stress on the middle screw. Conclusions In conclusion, our study indicated that ulnar-side locking plates resulted in a lower stress distribution in the plate and better stability than dorsal-side locking plates for ulnar head fracture fixation. Adding an additional screw to the ulnar head could increase the stability of the fixation system and provide an anti-torsion function. This study requires clinical confirmation of its practicality in the treatment of ulnar head fractures. This study requires clinical confirmation as to its practicality in the treatment of ulnar head fracture.

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“…Then, the relative displacement of the head and shaft fragments between the fracture ends, which was used to evaluate the support effects, was calculated by measuring the displacement in each direction of the XYZ axis. Finally, the von Mises stress (VMS) distribution and the displacement of the four different models were plotted as a nephogram [30][31][32].These parameters were used to capture the mechanical factors involved in the xation stability and fracture healing [33].…”

Section: Loading Force Settingsmentioning

confidence: 99%

Finite element analysis of different locking-plate fixation methods for the treatment of ulnar head fracture

Zhang

Shao

Yang

et al. 2021

Preprint

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Background: Ulnar head fractures are increasingly higher with the growing proportion of the elderly people. Failure to achieve a stable anatomic reduction of ulna head fracture may lead to a distal radioulnar joint (DRUJ) dysfunction and nonunion of the distal radius. Due to the lack of the postoperative reporting outcomes and the biomechanical studies, it has not been well established about the optimal management of the comminuted distal ulna head fracture. Hence, the purpose of this study is to use finite element analysis to explain the advantages and disadvantages of ulnar-side locking plate fixation compared with dorsal-side locking plate fixation and its screw arrangement in the treatment of ulnar head fractures.Methods: FE models of the ulnar head fracture and the models of ulnar-side locking plate and dorsal-side plate with two or three distal screws was constructed. In order to simulate forces acting on the ulnar and the osteosynthesis material during daily-life activity in subjects who underwent reconstructive surgery, we applied three loading conditions to each model, viz. 20 N axial compression, 50 N axial compression, 1 N∙m torsion moment, 1 N∙m lateral bending moments, and 1 N∙m extension bending moments. Under these conditions, values of the von Mises stress (VMS) distribution of the implant, peak VMS, the relative displacement of the head and shaft fragments between the fracture ends and the displacement and its direction of the models were investigated. Results: The stress values of ulnar-side plates were lower than those of dorsal-side plates. And the ulnar-plate fixation system also has smaller maximum displacement and relative displacement. When adding a screw in the middle hole of the ulnar head, the values of model displacement and the peak stress in fixation system are lower, but it may evidently concentrate the stress on the middle screw. Conclusions: In conclusion, our study indicated that ulnar-side locking plates resulted in a lower stress distribution in the plate and better stability than dorsal-side locking plates for ulnar head fracture fixation. Adding an additional screw to the ulnar head could increase the stability of the fixation system and provide an anti-torsion function. This study requires clinical confirmation of its practicality in the treatment of ulnar head fractures. This study requires clinical confirmation as to its practicality in the treatment of ulnar head fracture.

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Therapeutic effect of magnetic nanoparticles on calcium silicate bioceramic in alternating field for biomedical application

Cited by 42 publications

References 44 publications

Fabrication of fibrous poly (ɛ‐caprolactone) nano‐fibers containing cerium doped‐bioglasses nanoparticles encapsulated collagen

Fabrication of fibrous poly (ɛ‐caprolactone) nano‐fibers containing cerium doped‐bioglasses nanoparticles encapsulated collagen

Finite element analysis of different locking plate fixation methods for the treatment of ulnar head fracture

Finite element analysis of different locking-plate fixation methods for the treatment of ulnar head fracture

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