Influence of the intramedullary nail preparation method on nail's mechanical properties and degradation rate
| Autor: | Ewa Balacha, A. Morawska-Chochół, Patrycja Domalik-Pyzik, Maciej Boguń, Barbara Szaraniec, Jan Chłopek, Rafael Kucharski |
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| Rok vydání: | 2015 |
| Předmět: |
Fabrication
Materials science Alginates Composite number Biocompatible Materials Bioengineering Bone Nails Prosthesis Design Hot pressing law.invention Heating Biomaterials Intramedullary rod Glucuronic Acid Carbon Fiber Hardness law Elastic Modulus Tensile Strength Homogeneity (physics) Magnesium Injection moulding Magnesium alloy Composite material chemistry.chemical_classification Hexuronic Acids Polymer Carbon Fracture Fixation Intramedullary Equipment Failure Analysis chemistry Mechanics of Materials |
| Zdroj: | Materials Science and Engineering: C. 51:99-106 |
| ISSN: | 0928-4931 |
| DOI: | 10.1016/j.msec.2015.02.043 |
| Popis: | When it comes to the treatment of long bone fractures, scientists are still investigating new materials for intramedullary nails and different manufacturing methods. Some of the most promising materials used in the field are resorbable polymers and their composites, especially since there is a wide range of potential manufacturing and processing methods. The aim of this work was to select the best manufacturing method and technological parameters to obtain multiphase, and multifunctional, biodegradable intramedullary nails. All composites were based on a poly(l-lactide) matrix. Either magnesium alloy wires or carbon and alginate fibres were introduced in order to reinforce the nails. The polylactide matrix was also modified with tricalcium phosphate and gentamicin sulfate. The composite nails were manufactured using three different methods: forming from solution, injection moulding and hot pressing. The effect of each method of manufacturing on mechanical properties and degradation rate of the nails was evaluated. The study showed that injection moulding provides higher uniformity and homogeneity of the particle-modified polylactide matrix, whereas hot pressing favours applying higher volume fractions of fibres and their better impregnation with the polymer matrix. Thus, it was concluded that the fabrication method should be individually selected dependently on the nail's desired phase composition. |
| Databáze: | OpenAIRE |
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