Temat: endoprosthesis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Design and Structural Analysis of the Endoprosthesis of the Hip Joint
Autorzy:: Karpiński, R.
Jaworski, Ł.
Szabelski, J.
Powiązania:: https://bibliotekanauki.pl/articles/117650.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Tematy:: hip
endoprosthesis
FEA
Opis:: The paper presents results of the preliminary structural analysis of model of the endoprosthesis of the hip joint. Basics of anatomy and biomechanical analysis of the hip joint were introduced. Based on data from atlas of human anatomy and medical imaging, the prototype of endoprosthesis was modelled using Solid Edge ST8 software. After determining physical properties of structural materials, the Finite Elements Analysis of the model was conducted using in SolidWorks software under various load conditions. Finally the results of analysis are presented.
Źródło:: Applied Computer Science; 2016, 12, 1; 87-95
1895-3735
Pojawia się w:: Applied Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Overload Stress and its Influence on Durability of Ceramic Elements in Hip and Knee Joints Endoprostheses
Autorzy:: Nabrdalik, Marcin
Sobociński, Michał
Powiązania:: https://bibliotekanauki.pl/articles/2106602.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: endoprosthesis
stress
ceramic
FEM
Opis:: The paper presents mathematic-statistic methods defining the influence of stress on ceramic elements’ durability of hip and knee joints endoprostheses. The tests were conducted with Finite Elements Method in the ADINA System. The obtained results state the influence of load on the values of durability and stress, that get formed in ceramic parts of joints, and help to detect and solve technical problems and thus, counteract the subsequent effects resulting from premature wear of endoprosthesis elements. The paper emphasizes necessity of discovering new materials, that will be bio-compliant and wear resistant. Although ceramic materials like Al2O3, ZrO2, are brittle and less resistant to load than metallic implants, their improving mechanical parameters (excellent tribological properties), make them becoming new standard in biomaterials for clinical use. That opens new possibilities especially for hip or knee joints alloplasty.
Źródło:: Archives of Metallurgy and Materials; 2022, 67, 2; 729--734
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Numerical-Experimental Research on Some Parameters of Hip and Knee Endoprostheses, Determining Value and Form of Contact Stress Between their Elements
Autorzy:: Nabrdalik, Marcin
Sobociński, Michał
Powiązania:: https://bibliotekanauki.pl/articles/2048862.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: endoprosthesis
stress
strain
FEM
Opis:: The paper presents Finite Elements Method numerical analysis of strength of friction pairs most often used in hip and knee joints alloplasty. Analytic solutions are to indicate and define the areas where damages or premature wear of cooperating elements may occur. Analytical-experimental research states complete and thorough analysis. Accurate technical simulation of the joints of the human motor system, is difficult to conduct due to high level of complexity of human bio-bearings. All attempts to simulate the work of human joints, lead only to an approximate reflection of real human joint motion. To properly face the above problems, along with numerical analysis, there have been conducted empirical tests on the simulator of knee joint endoprosthesis.
Źródło:: Archives of Metallurgy and Materials; 2022, 67, 1; 277-282
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Numerical analysis of the strain distribution underneath the surface of polyethylene flat and spherical inserts with metal sled
Autorzy:: Nabrdalik, M.
Powiązania:: https://bibliotekanauki.pl/articles/122836.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: strain
endoprosthesis
odkształcenie
endoproteza
Opis:: Most of the mechanical failures in alloplasty are caused by material fatigue. To cut down the risk of it, we can either increase the fatigue resistance of the material or decrease the load strain. All presented numerical calculations allow to draw quality conclusions concerning the influence of some parameters of endoprostheses on the values of stress and strain that are formed in polyethylene inserts.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2014, 13, 4; 97-102
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Finite element analysis of oncology knee endoprosthesis
Autorzy:: Zach, L.
Konvickova, S.
Ruzicka, P.
Powiązania:: https://bibliotekanauki.pl/articles/285010.pdf
Data publikacji:: 2009
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:: endoprosthesis
biomaterials
finite element simulation
Opis:: This paper presents a finite element simulation of an oncology knee-joint endoprosthesis in a various degrees of flexion. The simulation has been made in accordance with an ISO 14243 [1-3]. A model of the knee implant (produces by ProSpon, s.r.o. [4]) consists of following parts: femoral stem, femoral replacement, femoral component, PE bushings, and tibial plateau. Results for four positions of flexion (1.53deg, 8.13deg, 15.31deg and 26.33deg) gave better understanding of strain and stress distribution along the endopros-thesis and pointed out also the most crucial areas requiring the attention. These foundlings are useful for individual design of the knee-joint prosthesis and for further development.
Źródło:: Engineering of Biomaterials; 2009, 12, no. 89-91; 9-11
1429-7248
Pojawia się w:: Engineering of Biomaterials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Study of Contact Pressures in Total Hip Replacement
Autorzy:: Czerniec, Myron
Zubrzycki, Jarosław
Powiązania:: https://bibliotekanauki.pl/articles/2024022.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: hip endoprosthesis
calculation method
contact mechanics
contact pressure
diameter of the endoprosthesis head
radial clearance
Opis:: Total hip arthroplasty is a complex procedure. The achievements of implantology enabled the development of a faithful representation of hip joint physiology as well as the production of materials that can successfully replace damaged natural tissues. The challenge is to correctly select the geometry of the endoprosthesis adequate to the load of the joint. Materials used for endoprosthesis are a metal head and a polymer cup (e.g. PE-UHMW). The main interactions in the endoprosthesis are friction and contact pressure, which must not exceed their limit. Exceeding them causes the destruction of the biomechanical system - plastic deformation of the polymer that is too large and the formation of unacceptable radial clearances. The paper presents the author's empirical method of determining the contact pressures in the tribological pair of the acetabulum - the head of the hip joint endoprosthesis. Based on the obtained research results, it was shown that the developed method gives correct solutions to the contact problem and gives reliable results. The assumption for the work was to prove that empirical methods give correct solutions to contact problems on a par with simulation methods such as FEM. The aim of the work was to demonstrate the correctness of the author's empirical method for determining the maximum contact pressures. Based on the author's developed calculation method of hip joint endoprosthesis contact parameters, the impact on maximum contact pressure and the angle of contact of the joint load was estimated depending on the diameter of the endoprosthesis and radial clearance. The correctness of changing the values of maximum contact pressure from the mentioned parameters was determined. Correspondingly: an increase in joint load causes a linear increase in the maximum contact pressure; increasing the diameter of the endoprosthesis head - their non-linear decrease, and increasing radial clearance - their increase.
Źródło:: Advances in Science and Technology. Research Journal; 2021, 15, 2; 176-183
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Computer Aided Design and Structural Analysis of the Endoprosthesis of the Knee Joint
Autorzy:: Zubrzycki, J.
Karpiński, R.
Górniak, B.
Powiązania:: https://bibliotekanauki.pl/articles/118225.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Tematy:: knee joint
endoprosthesis
finite elements analysis
Opis:: The paper presents results of the preliminary structural analysis of model of the endoprosthesis of the knee joint. Basics of anatomy and biomechanics of the knee joint were introduced. Based on data from computed tomography, the model of knee joint was constructed. The prototype of the endoprosthesis of the knee joint was designed. After determining physical properties of structural materials, the Finite Elements Analysis of the model was conducted under various load conditions. Finally the results of analysis are presented.
Źródło:: Applied Computer Science; 2016, 12, 2; 84-95
1895-3735
Pojawia się w:: Applied Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Stress occurring in the friction node of elements in the total knee endoprosthesis
Autorzy:: Nabrdalik, M.
Powiązania:: https://bibliotekanauki.pl/articles/122963.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: endoprosthesis
stress
FEM
endoproteza
naprężenie
MES
Opis:: The paper presents the numerical analysis of stress occurring in the friction node of bi-condylar knee endoprostheses. The Finite Elements Method allows one to calculate and present the stress distribution in all elements of the computing model.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2015, 14, 2; 41-48
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Use of the Finite Element Method in the analysis of load of polyethylene inserts of knee joint endoprosthesis
Autorzy:: Nabrdalik, M.
Powiązania:: https://bibliotekanauki.pl/articles/122634.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: contact stress
FEM
endoprosthesis
naprężenie kontaktowe
endoproteza
Opis:: The paper presents the numerical analysis of stress occurring in the most wearable parts of knee joint endoprostheses. That applies to the pair: sled - spherical insert. The Finite Elements Method makes it possible to calculate the stress in particular elements of the tested model. The interaction between the two parts of endoprosthesis takes place on a comparatively small contact surface.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2014, 13, 2; 87-93
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Numerical analysis of stress distribution generated in spherical polyethylene inserts by knee joint endoprotheses’ sleds
Autorzy:: Nabrdalik, Marcin
Sobociński, Michał
Powiązania:: https://bibliotekanauki.pl/articles/779682.pdf
Data publikacji:: 2019
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: polyethylene UHMWPE
FEM
endoprosthesis of knee joint
Opis:: The paper presents analysis of stress distribution in the friction node of knee joint endoprosthesis where sleds are made of various titanium alloys and CoCrMo cooperate with spherical polyethylene inserts. Currently used titanium alloys consists of Nb, Ta, Zr or Mo and with lesser value of Young’s modulus than Ti6Al4V alloy, or steel CoCrMo, which significantly varies from other metal materials. The obtained results make it possible to indicate the “weak points” of the accepted solution, and thus counteract the subsequent effects resulting from premature wear of endoprosthesis elements. The analysis was conducted with numerical method of ADINA System 8.6. The Finite Elements Method allowed to compute and present stress distribution quickly in all elements of the model.
Źródło:: Polish Journal of Chemical Technology; 2019, 21, 2; 1-5
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Geometrical structure for endoprosthesis surface lubrication and wear prognosis
Autorzy:: Wierzcholski, K.
Powiązania:: https://bibliotekanauki.pl/articles/242452.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: endoprosthesis
surface
measurements
gap height
wear
random prognosis
Opis:: It can be stated that over the last ten years in the European Union, the number of bone fractures caused by osteoarthritis has increased twofold. More than 100,000 hip or knee joints in total were implanted in Germany during one year. Within ten years, 5% of them have failed by aseptic loosening. The non-invasive determination of friction forces and control of their values during lubrication of cartilage cells on the superficial layer of human joint surfaces before implantation has a significant but not sufficient impact on the observation of the early abrasive wear of the cartilage joint and development of osteoporosis. From this fact was drawn the inspiration for the performed investigations related to the endoprosthesis surface parameters because knowledge of the roughness of prosthesis surfaces and friction forces and their control methods permits provision of a necessary standard deviation of the gap height and finally information about the implantation possibility. This article has been prepared based on the objective of European Project UE Grant IRSES,612593, 2013-2016 to represent the methodology and goal of the idea described in and make a wider discussion possible on this subject for further developments during the realization. To the research methods and materials used in this article realization belong: Rank Taylor Hobson-Talyscan 150 Apparatus implemented by Talymap Expert and Microsoft Excel Computer Program connected with the Mathcad 15 Professional Program and a new semi-analytical methods of probabilistic and statistic prognosis applied for theory of hydrodynamic lubrication of the curvilinear orthogonal surface and coordinates extended to the friction and wear problems of the endoprosthesis surfaces during the exploitation.
Źródło:: Journal of KONES; 2017, 24, 4; 335-341
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Analysis of Stresses and Strains Distribution of Polyethylene Cups in Hip Joint Endoprosthesis at Various Articular Joints and Friction Conditions
Autorzy:: Mordal, Katarzyna
Szarek, Arkadiusz
Powiązania:: https://bibliotekanauki.pl/articles/2049722.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: polyethylene
UHMWPE
hip joint endoprosthesis
friction conditions
computer modelling
Opis:: The article has been devoted to issues connected with the alloplasty and hip joint endoprostheses, that elements are being developed, which is supported by strength, tribological tests on used biomaterials, incl. polyethylene or computer modelling based on e.g. finite element method (FEM). In this paper, the results of research on the impact of the material articulations of the system head – acetabular and friction conditions on strength parameters of polyethylene components in the hip joint endoprosthesis. Numerical analysis of this friction node was carried out, using the ADINA System computer program and the simulations were performed at various friction conditions for metal/ polyethylene and ceramic/ polyethylene articulations with various UHMWPE modifications. The simulations results have shown the influence of tested material associations and friction conditions on parameters related to the strength of polyethylene cups, i.e. their displacements, stresses and deformations.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 2; 523-530
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Polyurethanes from the crystalline prepolymers resistant to abrasive wear
Autorzy:: Domańska, Agata
Boczkowska, Anna
Izydorzak-Woźniak, Marta
Jaegermann, Zbigniew
Grądzka-Dahlke, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/778795.pdf
Data publikacji:: 2014
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: polyurethane
crystalline prepolymer
abrasive wear
adhesion
friction coefficient
endoprosthesis
Opis:: The research aimed at the selection of polyurethanes synthesized from poly(tetramethylene ether) glycol (PTMEG), as well as from two different isocyanates 4,4′-methylenebis(cyclohexyl)isocyanate (HMDI) and 4.4′-methylenebis(phenyl isocyanate) (MDI) in order to obtain polyurethane with increased resistance to abrasive wear and degradation for bio-medical application. Polyurethanes were fabricated from crystalline prepolymers extended by water. The paper presents preliminary results on polyurethane surface wettability, friction coeffi cient for different couples of the co-working materials such as polyurethane–polyurethane, polyurethane–titanium alloy, polyurethane–alumina, in comparison to commonly used polyethylene–titanium alloy. Shear strength of polyurethane–alumina joint, as well as viscosity of prepolymers were also measured. The values of friction coeffi cient were compared to literature data on commercially available polyurethane with the trade name Pellethane. Polyurethanes obtained are characterized by low abrasive wear and low friction coeffi cient in couple with the titanium alloy, what makes them attractive as possible components of ceramic-polymer endoprosthesis joints.
Źródło:: Polish Journal of Chemical Technology; 2014, 16, 4; 14-20
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: The use of finite elements method for analyzing the load occurring in components of endoprostheses
Wykorzystanie metody elementów skończonych do analizy obciążeń występujących w komponentach endoprotez
Autorzy:: Sobociński, M.
Nabrdalik, M.
Powiązania:: https://bibliotekanauki.pl/articles/261533.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki. Katedra Inżynierii Biomedycznej
Tematy:: endoprosthesis
FEM
contact stress
endoproteza
metoda elementów skończonych
naprężenia kontaktowe
Opis:: This paper presents numerical analysis of strength in virtual hip and knee joints by means of the finite elements method FEM. Predicting the places in implants, where damage or premature wear may occur, is extremely important. The obtained results helped to exhibit weak points in examined models, and thus may be used to protect premature wear of endoprosthesis elements. The numerical analysis was based on the finite elements method FEM using Autodesk Simulation Mechanical 2016 software and the ADINA 7.5.1.
Celem pracy była numeryczna analiza wytrzymałościowa zmian w wirtualnym stawie biodrowym i kolanowym. Zastosowano metodę elementów skończonych. Zastosowanie rozwiązań analitycznych mających na celu wykazanie możliwych miejsc w modelu, gdzie dochodzić może do uszkodzeń lub przedwczesnego zużycia współpracujących elementów, jest niezmiernie ważne. Otrzymane wyniki uwidoczniły takie miejsca, a tym samym mogą być wykorzystane do przeciwdziałania skutkom wynikającym z przedwczesnego zużycia elementów endoprotezy. Analiza numeryczna została wykonana w oparciu o metodę elementów skończonych przy wykorzystaniu oprogramowania Autodesk Simulation Mechanical 2016 oraz ADINA 7.5.1.
Źródło:: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna; 2017, 23, 3; 166-175
1234-5563
Pojawia się w:: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Assessment of the effects of Proprioceptive Neuromuscular Facilitation therapy on the improvement of motor function in a patient after total hip replacement – a case study
Autorzy:: Guzik, Agnieszka
(, Anna Szpitman
Drużbicki, Mariusz
Wyszyńska, Justyna
Wolan-Nieroda, Andżelina
Powiązania:: https://bibliotekanauki.pl/articles/454875.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:: hip joint
osteoarthritis
endoprosthesis plasty
PNF method
total hip arthroplasty
Opis:: Hip osteoarthritis is a serious clinical and social problem. The number of patients who suffer from degenerative changes in the hip joints and require endoprosthesis-plasty is constantly increasing. This paper presents physiotherapeutic activities based on Proprioceptive Neuromuscular Facilitation (PNF) which optimize a patient’s mobilization using the reserves in their body fully to make improvements in movement and to regain lost functions for achieving beneficial therapeutic effects. The aim of the study was to evaluate the influence of PNF therapy on changes in muscle strength, mobility, and gait pattern in patients after Total Hip Arthroplasty. The case described here regards a 63-year-old woman diagnosed with left hip osteoarthritis who had Total Hip Arthroplasty. The patient was examined twice before and after PNF therapy. The range of mobility of hip joints, level of pain, muscular strength and gait were assessed. Applied PNF therapy, including dynamic (eccentric, concentric) and static muscle training, post-isometric relaxation, stabilization and control in the stance phase, resulted in improved hip joint mobility, muscle strength, gait pattern and pain reduction in the patient. The case study demonstrates that a short (two-week) but intensive (over two hours per day) PNF therapy positively influenced selected motor functions after Total Hip Arthroplasty.
Źródło:: European Journal of Clinical and Experimental Medicine; 2017, 3; 287-294
2544-2406
2544-1361
Pojawia się w:: European Journal of Clinical and Experimental Medicine
Dostawca treści:: Biblioteka Nauki

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