PhD Fekete - SZIE version - 2.2 - Szent István Egyetem

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Materials and Methods λ 3 [-] 1 0.8 0.6 0.4 Average λ3 function 0.2 Standard deviation 0 Experimental data of λ3 Flexion angle [°] 40 60 80 100 120 140 160 Figure 3.24. Dimensionless λ 3 functions The ø(α) and β(α) functions are also plotted with their standard deviation (Figure 3.25 and Figure 3.26). ø [-] 0.6 0.4 0.2 Average ø function Standard deviation Experimental data of ø Flexion angle [˚] 0 40 60 80 100 120 140 160 Figure 3.25. Dimensionless ø function – 98 –
Materials and Methods β [º] 40 20 0 -20 -40 -60 Flexion angle [˚] 0 20 40 60 80 100 120 140 160 Average β function Standard deviation Experimental data of β Van Eijden et al. Wimmer and Andriacchi Victor et al. Figure 3.26. Dimensionless β function The results were compared to the results of other authors in case of the β(α) function. As it is seen, the correlation between the own measured results, the results of other authors [Van Eijden et al., 1986, Wimmer and Andriacchi, 1997, Victor et al., 2010] is remarkably good. The higher deviation of the λ 1 (α) , λ 3 (α) and ø(α) functions can be originated to three factors: 1. The variety of the subjects (regardless of males or females) 2. Small, but inevitable differences in the carried out motion, 3. The constant fluctuation of the center of pressure, which is directly connected to the center of gravity under standing, walking or squatting movement. Let us explain these factors in details. The aim of the experiment was to derive universal descriptive functions with regard to the horizontal movement of the center of gravity. The obtained results were inspected if noticeable difference could be observed on the male or female results, but seemingly, they were randomly located in the data field with similar trend. Naturally, in contempt of the prescribed three conditions, small differences always appear in biomechanical measurements, since humans implicitly are not able to carry out a motion exactly the same way as a machine. This incident obviously increases the standard deviation in the biomechanical measurements. To maintain balance, the human body has to move constantly towards a balance point, which appears physically as a body sway. This neural control [Masani et al., 2006, Loram et al., 2005] can be perceived as constant fluctuation in the center of pressure. Due to this constant interference of the neural balance control, more deviation is experienced in the measured data. Beside these factors, one more remark has to be added. – 99 –
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SZENT ISTVÁN UNIVERSITY KINETICS A
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CONTENTS NOMENCLATURE AND ABBREVIAT
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NOMENCLATURE AND ABBREVIATIONS F pf
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ψ : Angle between the quadriceps t
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v CTt : Tangential velocity compone
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Introduction 1. INTRODUCTION AND OB
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1.3. Aims of the PhD thesis Introdu
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Literature review 2. LITERATURE REV
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Literature review Figure 2.3. The f
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Literature review Figure 2.6. Patel
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Literature review Figure 2.8. Compo
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Literature review The knee carries
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Literature review For this reason,
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Literature review Figure 2.12. Thre
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Literature review As a short overvi
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Literature review Moment arm 60 [mm
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Literature review I. They demonstra
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Literature review The presented mod
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Literature review ε angle [˚] 100
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Literature review Fpf/Fq [-] 1.2 1
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Literature review β angle [˚] Mal
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Literature review Figure 2.35. Mech
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Literature review Moment arm 60 [mm
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Literature review Let us follow the
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Literature review Finally, the pate
Page 51 and 52: Literature review Figure 2.43. Tota
Page 53 and 54: Literature review One great advanta
Page 55 and 56: Literature review Implant wear is t
Page 57 and 58: 2.3.2. General numerical models Lit
Page 59 and 60: a) The tibia plateau is a flat surf
Page 61 and 62: Literature review From their calcul
Page 63 and 64: Literature review Although a simila
Page 65 and 66: Literature review Slide/Roll [-] 1
Page 67 and 68: Literature review Figure 2.62. Mult
Page 69 and 70: Materials and Methods 3.1. Methodol
Page 71 and 72: Materials and Methods For the sake
Page 73 and 74: Materials and Methods 9 th QUESTION
Page 75 and 76: Materials and Methods 3.3. New anal
Page 77 and 78: Materials and Methods 3.3.3. Free-b
Page 79 and 80: Materials and Methods Figure 3.6. F
Page 81 and 82: Materials and Methods By the introd
Page 83 and 84: Materials and Methods 3.4. Experime
Page 85 and 86: Materials and Methods Figure 3.7. C
Page 87 and 88: Materials and Methods All of the pa
Page 89 and 90: Materials and Methods 3.4.5. Measur
Page 91 and 92: x c Materials and Methods ∑ Fi
Page 93 and 94: Materials and Methods Probability D
Page 95 and 96: Materials and Methods Figure 3.18.
Page 97 and 98: Materials and Methods By doing so,
Page 99 and 100: 3.4.7.2. Steps of the approach Mate
Page 101: Materials and Methods All the funct
Page 105 and 106: Materials and Methods If the center
Page 107 and 108: Materials and Methods By the use of
Page 109 and 110: Materials and Methods Thus, one pri
Page 111 and 112: Materials and Methods I. The patter
Page 113 and 114: 3.6.3. Geometrical models Materials
Page 115 and 116: Materials and Methods − − −
Page 117 and 118: 3.6.4.3. Contact [MSC.ADAMS] Materi
Page 119 and 120: Materials and Methods Besides the k
Page 121 and 122: Materials and Methods By multiplyin
Page 123 and 124: Results 4. RESULTS 4.1. Results reg
Page 125 and 126: Results This closely equal percenta
Page 127 and 128: Results Fpf/BW [-] 8 Fekete et al.
Page 129 and 130: Results In reality, human subjects
Page 131 and 132: Results 4.2. Results regarding the
Page 133 and 134: Results 0.8 Χ [-] 1 Sliding-rollin
Page 135 and 136: Results Χ [-] 1 Sliding-rolling ra
Page 137 and 138: Results Among the tested prostheses
Page 139 and 140: Results χ [-] 1 Averaged sliding-r
Page 141 and 142: Results Χ [-] 1 Sliding-rolling ra
Page 143 and 144: 4.3. New scientific results Results
Page 145 and 146: Results 3 rd Thesis: Based on the m
Page 147 and 148: Conclusions and Suggestions 5. CONC
Page 149 and 150: Conclusions and Suggestions Suggest
Page 151 and 152: Summary 6. SUMMARY In this doctoral
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Appendix APPENDIX A1. Bibliography
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Appendix [31] Csizmadia B. M., Nán
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Appendix [61] Gill H. S., O’Conno
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Appendix [93] Klebanov B. M., Barla
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Appendix [123] Nägerl H., Frosch K
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Appendix [154] Reuben J. D., McDona
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Appendix [187] Wahrenberg H., Lindb
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Appendix 6. Fekete G., Kátai L.: M
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Appendix Figure 3. Setting Stitchin
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Appendix Fpf/Fq [-] 1.2 h = 6 mm h
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Appendix η1 angle [˚] 6 Hirokawa
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Appendix Figure 13. Mechanical mode
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Appendix Ψ angle [˚] 10 Van Eijde
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Appendix Figure 19. Mechanical mode
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Appendix - 177 -
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PhD Fekete - SZIE version - 2.2 - Szent István Egyetem

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