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2016, vol. 47, br. 1, str. 42-47
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Ispitivanje stabilnosti osteosintetskog materijala softverskim simulatorom kosti
Examination of stability of osteo-syntetic matherial by software bone stimulator
aKlinički centar Republike Srpske, Klinika za ortopediju i traumatologiju, Banja Luka, Republika Srpska, BiH bHI Dr Grubor, Banja Luka, Republic of Srpska, Bosnia and Herzegovina cKlinički centar Republike Srpske, Klinika za opštu i abdominalnu hirurgiju, Banja Luka, Republika Srpska, BiH
e-adresa: predraggrubor@gmail.com
Ključne reči: biomehanika; dinamičko kompresivne ploče; softver CATIA i ANSYS
Sažetak
Uvod. Softverski model simulatora (SCA) je računarski program pisan na jednom od mnogobrojnih programskih jezika. Na osnovu zadanih ulaznih podataka na matematičkom biomehaničkom modelu kosti i na modelima raznih osteosintetskih materijala, on izračunava i daje tražene izlazne rezultaze o diletaciji (mm) na mjestu preloma u odnosu na primjenjenu aksijalnu i bočnu silu (N). Cilj rada. Istražiti proračun napona i deformaciju na sile pritiska i savijanja na simulatoru softverskog modela kod dinamičko kompresivne ploče (DCP), dinamičko kopresivne zaključane ploče (LCP), intermedularnog zaključanog klina (LIN) i unutrašnjeg fiksatora po Mitkoviću (IFM). Ispitanici i metode. Za izradu 3D modela DCP, LCP, IFM, LIN,korišten je softver CATIA, a za proračun napona i deformacija za pritisak i savijanje, softver ANSYS(SCA). Ispitivani materijal opterećen je silama kompresije do 500 N i silama savijanja do 250N. Rezultati istraživanja. Rezultati biomehaničkog ispitivanja na SCA pokazuju da je, po biomehaničkoj stabilnosti, na prvom mjestu LIN sa koeficijentom ranga KLIN=0,1950. Zatim slijede DCP sa KDCP=0,1970, IFM sa KIFM=0,2238 i LCP sa KLCP=0,2394. Diskusija. Na osnovu ulaznih podataka, formira se matematički model koji korištenjem unesenih podataka izračunava i edituje tražene rezultate. U svijetu je danas tendencija da se napravi standarizacija softverskog ispitivanja, kako bi se ispitivani rezultati mogli jednostavno primjenjivati i tumačiti u naučno-istraživačke svrhe. Zaključak. Prvi u rangu po biomehaničkoj stabilnosati je LIN, sa koeficijentom ranga KLIN=0,1950. Zatim slijede DCP sa KDCP=0,1970, IFM sa KIFM=0,2238 i LCP sa KLCP=0,2394.
Abstract
Introduction. Softwaresimulator model (SSM) is a computer program written in one of the many programming languages. Based on the given input data on mathematical biomechanical model of bones and on various osteosynthesis material models, it calculates and provides the required output results of dilatation (mm) at the site of the fracture inrelation to the applied axial and a lateral force(N). Aim of the study. To examine the budget voltage and deformation of the compressive forces and bending simulator software model in dynamic compression plate (DCP), dynamic locked extension compression plate (LCP), locked intramedullary nail (LIN) and Mitković internal fixator (MIF). Material and methods. CATIA software was used to create a 3D model of the DCP, the LCP, MIF, LIN and for the calculation of stress and strain for the pressure and bending, ANSYS (SCA) software was used. The tested material was loaded by compression forces up to 500 Nand bending forces up to 250N. Results. Results of biomechanical tests on SCA showed that, according to biomechanical stability, LIN was in the first rank, with coefficient ranking KLIN=0.1950. Subsequently, there was TDCP with KDCP=0.1970, MIF with KMIF=0.2238 and LCP with KLCP=0.2394. Discussion. Based on the input data, mathematical model is formed and it uses the entered data, calculates and edits the required results. There is a tendency in today’s world to make the standardization of software testing, so that tested results could be easily applied and interpreted in scientific research purposes. Conclusion. First in rank by biomechanical stability was LIN with coefficient ranking KLIN=0.1950. Subsequently, there was DCP with KDCP=0.1970, MIF with KMIF=0.2238 and LCP with KLCP=0.2394.
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