Browsing by Author "Henyš Petr"
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- ItemBiomechanical comparison of cemented versus non-cemented anterior screw fixation in type II odontoid fractures in the elderly: a cadaveric study(Elsevier, 2018) Řehoušek Petr; Jenner Edward; Holton James; Czyz Marcin; Čapek Lukáš; Henyš Petr; Kulvajtova Marketa; Krbec Martin
- ItemBuckling behaviour of polyester fibres: influence of their material heterogeneity(Taylor and Francis, 2020) Demestre Louise; Henyš Petr; Čapek Lukáš; Tomková Blanka; Moravec Jaromír
- ItemCalculation of Stress And Deformation of the Bearing Structure of the Glass Envelope of Buildings(2016) Petríková Iva; Marvalová Bohdana; Henyš Petr
- ItemCement Augmentation of Odontoid Peg Fractures: the Effect of Cement Volume And Distribution on Construct Stiffness(Springer Nature, 2020) Čapek Lukáš; Řehoušek Petr; Henyš Petr; Bleibleh Sabri; Jenner Edward; Kulvajtova Marketa; Skala-Rosenbaum Jiří
- ItemCompressional stability of optical fibres: a combined experimental and computer study(Springer, 2018) Čapek Lukáš; Henyš Petr; Placet Vincent; Kolčavová Sirková Brigita
- ItemComputed modeling of humeral mid-shaft fracture treated by bundle nailing(Taylor and Francis, 2016) Obruba Petr; Čapek Lukáš; Henyš Petr; Kopp Lubomír
- ItemComputer Modeling of Sonotrode Design for Ultrasonic Glass Drilling(Technická univerzita v Liberci a Česká sklářská společnost, 2018) Horák Marcel; Novotný František; Henyš Petr
- ItemCourse of finite element method in textile engineering(2018) Čapek Lukáš; Henyš Petr
- ItemDevelopment of an acoustic measurement protocol to monitor acetabular implant fixation in cementless total hip Arthroplasty: A preliminary study(Elsevier Ltd, 2017) Henyš Petr; Goossens Quentin; Leuridan Steven; Roosen Jorg; Pastrav Leonard Cezar; Mulier Michiel; Desmet Wim; Denis Kathleen; Vander Sloten JosIn cementless total hip arthroplasty (THA), the initial stability is obtained by press-fitting the implant in the bone to allow osseointegration for a long term secondary stability. However, finding the insertion endpoint that corresponds to a proper initial stability is currently based on the tactile and auditory experiences of the orthopedic surgeon, which can be challenging. This study presents a novel real-time method based on acoustic signals to monitor the acetabular implant fixation in cementless total hip arthroplasty. Twelve acoustic in vitro experiments were performed on three types of bone models; a simple bone block model, an artificial pelvic model and a cadaveric model. A custom made beam was screwed onto the implant which functioned as a sound enhancer and insertor. At each insertion step an acoustic measurement was performed. A significant acoustic resonance frequency shift was observed during the insertion process for the different bone models; 250 Hz (35%, second bending mode) to 180 Hz (13%, fourth bending mode) for the artificial bone block models and 120 Hz (11%, eighth bending mode) for the artificial pelvis model. No significant frequency shift was observed during the cadaveric experiment due to a lack of implant fixation in this model. This novel diagnostic method shows the potential of using acoustic signals to monitor the implant seating during insertion.
- ItemEvaluation of acetabular cup initial fixation by using resonance frequency principle(SAGE PUBLICATIONS LTD, 2015) Henyš Petr; Čapek Lukáš; Fencl Jaroslav; Procházka Egon
- ItemFailure of Sternal Wires Depends on the Number of Turns And Plastic Deformation: Combined Experimental And Computational Approach(OXFORD UNIV PRESS, 2018) Čapek Lukáš; Henyš Petr; Kaláb Martin; Solfronk Pavel
- ItemGraft orientation influences meshing ratio(ELSEVIER SCI LTD, 2018) Čapek Lukáš; Flynn Cormac; Molitor Martin; Chong Simon; Henyš Petr
- ItemHow does the surface treatment change the cytocompatibility of implants made by Selective Laser Melting?(Taylor & Francis, 2018) Ackermann Michal; Horáková Jana; Čapek Lukáš; Henyš Petr; Šafka Jiří; Matoušková LucieIntroduction: The study investigates the potential for producing medical components via Selective Laser Melting technology (SLM). The material tested consisted of the biocompatible titanium alloy Ti6Al4V. The research involved the testing of laboratory specimens produced using SLM technology both in vitro and for surface roughness. The aim of the research was to clarify whether SLM technology affects the cytocompatibility of implants and, thus, whether SLM implants provide suitable candidates for medical use following zero or minimum post-fabrication treatment. Areas covered: The specimens were tested with an osteoblast cell line and, subsequently, two post-treatment processes were compared: non-treated (as-fabricated) and glass-blasted. Interactions with MG-63 cells were evaluated by means of metabolic MTT assay and microscope techniques (scanning electron microscopy, fluorescence microscopy). Surface roughness was observed on both the non-treated and glass-blasted SLM specimens. Expert Commentary: The research concluded that the glass-blasting of SLM Ti6Al4V significantly reduces surface roughness. The arithmetic mean roughness Ra was calculated at 3.4 µm for the glass-blasted and 13.3 µm for the non-treated surfaces. However, the results of in vitro testing revealed that the non-treated surface was better suited to cell growth.
- ItemHuman Biomechanics(Grada, 2018) Čapek Lukáš; Henyš Petr; Horák Zdeněk; Vilímek Miloslav; Horný Lukáš; Hájek Petr; Vimmr Jan; Jonášová Alena
- ItemImpact Force, Polar Gap and Modal Parameters Predict Acetabular Cup Fixation: A Study on a Composite Bone.(SPRINGER, 2018) Henyš Petr; Čapek Lukáš
- ItemIndividual yarn fibre extraction from micro-CT: multilevel machine learning approach(Taylor & Francis, 2021) Henyš Petr; Čapek Lukáš
- ItemInserting Force of Abdominal Aorta Stentgraft Delivery System(2017) Čapek Lukáš; Henyš Petr
- ItemLeft–right differences in the proximal femur’s strength of post-menopausal women: a multicentric finite element study(Springer London, 2015) Henyš Petr; Taddei Fulvia; Falcinelli Cristina; Balistreri Luca; Baruffaldi Fabio; Sigurdsson Sigurdur; Gudnason Vilmundur; Dietzel Roswitha; Armbrecht Gabi; Boutroy Stephanie; Schileo Enrico; Harris T.B.
- ItemLocalising the smallest stiffness and its direction of a homogeneous structure by spectral and optimisation approaches(Elsevier BV, 2021) Henyš Petr; Sutula Danas; Kopal Jiří; Čapek Lukáš
- ItemMaterial model of pelvic bone based on modal analysis: a study on the composite bone(2016) Henyš Petr; Čapek Lukáš