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Stress - strain analysis of inferios limb with fixator type Poldi 7
Pásek, Jiří ; Fuis, Vladimír (referee) ; Florian, Zdeněk (advisor)
This diploma thesis deals with stress-strain analysis of inferious limb fixator type Poldi VII and tibia, whereupon is applied. In work is discribed creation of a geometry model of fixator and tibia, her discretization, loading and solving. Tibia was load by torsional moment and his magnitude was 10Nm. Then was perform a numerical solution in FEM system ANSYS Workbench 11.0. Further was effect biomechanical study about osification of broken part. Tibia was load by force, which evokes upright standing on both limbs.
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Estimation of mechanical properties of the cancellous bone tissue of the proximal tibia
Leinweber, Vít ; Valášek, Jiří (referee) ; Marcián, Petr (advisor)
This bachelor thesis is focused on the determination of mechanical properties of cancellous bone tissue of proximal tibia. In the beginning of the work there is theoretical part which consists of a description of the tibia anatomy from macroscopic and microscopic view, treatise on the bone tissue growth, influences affecting the bone tissue growth and description of mechanical properties of the bone tissue. In the end of the theoretical part there is a detailed review of related literature to this work. In the practical part morphometric parameters are measured using software ImageJ and plugin BoneJ. The process of creating a computational model is described and results of mechanical properties are presented. Regression models of mechanical properties and histomorphometric parameters are created from these results.
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A case study of physiotherapeutic treatment of a patient after osteosynthesis of the tibia.
Korčáková, Klára ; Kočí, Gabriela (advisor) ; Mazancová, Iva (referee)
Author: Klára Korčáková Title: A case study of physiotherapeutic treatment of a patient after osteosynthesis of the tibia. Objectives: The aim of the thesis is to create a theoretical background on fracture of fibula and tibial osteosynthesis as a part of the theoretical framework. The special part focuses on establishing a case report of a patient with this diagnosis. Methods: The special part of this bachelor thesis was created during continuous one-month practice at Medicentrum Praha from January 9th to February 3rd , 2023. Based on the patient's medical history and initial examination, goals of therapy were established and 10 therapeutic sessions were conducted, concluded with an exit examination and assessment of the effectiveness of performed therapy. Results: In the general part of the thesis, crucial theoretical background was processed, and in the specific part, improvements were achieved in most of the measured values. Keywords: tibia, fraction of tibia, physiotherapy
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The influence of physiologically controlled motor activity on biomechanical cross-section properties of long bones.
Jindrová, Alena ; Sládek, Vladimír (advisor) ; Špoutil, František (referee)
The mechanical loading affects the long bone cross-section geometry (CSG). The aim of this thesis was to examine experimentally the relationship between the locomotory parameters and cross-sectional properties of long bones, and to test some partial knowledge of the bone mechanical adaptation. Two groups of B6CBA mice were examined: (a) Lurcher type (model of olivocerebellar degeneration; n = 10) and (b) control (normal mice; n = 10). We analyzed the motor characteristics and the bone cross-sectional geometric properties. The motor tests included the test of spontaneous motor activity (Open field), strength properties (horizontal bar) and motor coordination (rotarod). Cross-sections were taken in 50 % of the left tibia biomechanical length and further processed for fluorescence confocal microscopy. We analyzed the biomechanical properties of cortical bone cross-sections (software ImageJ). There were nonsignificant differences in CSG parameters (TA, CA, Imax, Imin, J, Imax/Imin) between Lurcher and control mice. The results did not support our assumption about the effect of motor disorder on CSG properties. We did not demonstrate the effect of local factors on the bone biomechanical adaptation. The results of this thesis may be useful to find new testing possibilities of cortical bone in...
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Femoral and tibial cortical tissue distribution: the error ranges of cross-sectional parameters
Schuplerová, Eliška ; Sládek, Vladimír (advisor) ; Velemínská, Jana (referee)
In biomechanical analyses, the position of long bone cross-section under study is defined relatively to biomechanical length (BML) of the bone. In damaged bones where BML can not be measured, the position of the cross-section has to be estimated. Sládek et al. (2010) studied the effect of inaccurately located femoral and tibial midshafts on the cross-sectional parameters in a pooled-sex sample from a single period. In the present study we aim to test whether the effect of inaccurately located femoral and tibial midshafts on the cross-sectional parameters is sample-specific and/or sex-specific. We used femora of 29 females and 25 males and tibiae of 24 females and 36 males from two different periods (Late Eneolithic and Early Bronze Age; early modern period). 29 cross-section CT scans per bone obtained at each 1% interval from 40% to 60% of BML and at each 5% interval from 20-40% and 60-80% of BML were available to us. We digitized the cross-section scans and computed the error ranges of the cross-sectional parameters. We compared the mean percentage difference (MD%) and mean accuracy range (MAR) between samples and sexes. Our results are in concordance with the results of Sladek et al. (2010): the cross-sectional parameters most sensitive to positioning error are tibial second moments of area (MAR...
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Estimation of mechanical properties of the cancellous bone tissue of the proximal tibia
Leinweber, Vít ; Valášek, Jiří (referee) ; Marcián, Petr (advisor)
This bachelor thesis is focused on the determination of mechanical properties of cancellous bone tissue of proximal tibia. In the beginning of the work there is theoretical part which consists of a description of the tibia anatomy from macroscopic and microscopic view, treatise on the bone tissue growth, influences affecting the bone tissue growth and description of mechanical properties of the bone tissue. In the end of the theoretical part there is a detailed review of related literature to this work. In the practical part morphometric parameters are measured using software ImageJ and plugin BoneJ. The process of creating a computational model is described and results of mechanical properties are presented. Regression models of mechanical properties and histomorphometric parameters are created from these results.
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Stress - strain analysis of inferios limb with fixator type Poldi 7
Pásek, Jiří ; Fuis, Vladimír (referee) ; Florian, Zdeněk (advisor)
This diploma thesis deals with stress-strain analysis of inferious limb fixator type Poldi VII and tibia, whereupon is applied. In work is discribed creation of a geometry model of fixator and tibia, her discretization, loading and solving. Tibia was load by torsional moment and his magnitude was 10Nm. Then was perform a numerical solution in FEM system ANSYS Workbench 11.0. Further was effect biomechanical study about osification of broken part. Tibia was load by force, which evokes upright standing on both limbs.
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Femoral and tibial cortical tissue distribution: the error ranges of cross-sectional parameters
Schuplerová, Eliška ; Sládek, Vladimír (advisor) ; Velemínská, Jana (referee)
In biomechanical analyses, the position of long bone cross-section under study is defined relatively to biomechanical length (BML) of the bone. In damaged bones where BML can not be measured, the position of the cross-section has to be estimated. Sládek et al. (2010) studied the effect of inaccurately located femoral and tibial midshafts on the cross-sectional parameters in a pooled-sex sample from a single period. In the present study we aim to test whether the effect of inaccurately located femoral and tibial midshafts on the cross-sectional parameters is sample-specific and/or sex-specific. We used femora of 29 females and 25 males and tibiae of 24 females and 36 males from two different periods (Late Eneolithic and Early Bronze Age; early modern period). 29 cross-section CT scans per bone obtained at each 1% interval from 40% to 60% of BML and at each 5% interval from 20-40% and 60-80% of BML were available to us. We digitized the cross-section scans and computed the error ranges of the cross-sectional parameters. We compared the mean percentage difference (MD%) and mean accuracy range (MAR) between samples and sexes. Our results are in concordance with the results of Sladek et al. (2010): the cross-sectional parameters most sensitive to positioning error are tibial second moments of area (MAR...
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The influence of physiologically controlled motor activity on biomechanical cross-section properties of long bones.
Jindrová, Alena ; Sládek, Vladimír (advisor) ; Špoutil, František (referee)
The mechanical loading affects the long bone cross-section geometry (CSG). The aim of this thesis was to examine experimentally the relationship between the locomotory parameters and cross-sectional properties of long bones, and to test some partial knowledge of the bone mechanical adaptation. Two groups of B6CBA mice were examined: (a) Lurcher type (model of olivocerebellar degeneration; n = 10) and (b) control (normal mice; n = 10). We analyzed the motor characteristics and the bone cross-sectional geometric properties. The motor tests included the test of spontaneous motor activity (Open field), strength properties (horizontal bar) and motor coordination (rotarod). Cross-sections were taken in 50 % of the left tibia biomechanical length and further processed for fluorescence confocal microscopy. We analyzed the biomechanical properties of cortical bone cross-sections (software ImageJ). There were nonsignificant differences in CSG parameters (TA, CA, Imax, Imin, J, Imax/Imin) between Lurcher and control mice. The results did not support our assumption about the effect of motor disorder on CSG properties. We did not demonstrate the effect of local factors on the bone biomechanical adaptation. The results of this thesis may be useful to find new testing possibilities of cortical bone in...
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