"9"^^ . . "K z\u00E1kladn\u00EDm po\u017Eadovan\u00FDm vlastnostem jak\u00FDchkoliv endoprot\u00E9z pat\u0159\u00ED jejich funk\u010Dnost, biotolerance a spolehlivost. Tento projekt, v n\u00E1vaznosti na nosn\u00FD projekt, se zab\u00FDv\u00E1 probl\u00E9mem spolehlivosti keramick\u00FDch hlavic tot\u00E1ln\u00EDch ky\u010Deln\u00EDch endoprot\u00E9z. \u0158e\u0161en\u00ED probl\u00E9mu bylo podm\u00EDn\u011Bno \u010Detn\u011Bj\u0161\u00EDm poru\u0161ov\u00E1n\u00ED t\u011Bchto hlavic v klinick\u00E9 praxi v ned\u00E1vn\u00E9 minulosti. V p\u0159edch\u00E1zej\u00EDc\u00EDch etap\u00E1ch \u0159e\u0161en\u00ED byla navr\u017Eena a ov\u011B\u0159ena metodika jeho \u0159e\u0161en\u00ED. Na z\u00E1klad\u011B v\u00FDsledk\u016F v\u00FDpo\u010Dtov\u00E9ho a experiment\u00E1ln\u00EDho modelov\u00E1n bylo prok\u00E1z\u00E1no, \u017Ee podstatn\u00FD vliv na vznik mezn\u00EDch stav\u016F poru\u0161ov\u00E1n\u00ED soudr\u017Enosti keramick\u00FDch hlavic maj\u00ED tvarov\u00E9 odchylky ku\u017Eelov\u00E9ho spojen\u00ED d\u0159\u00EDku a hlavice. Postupn\u011B byla ur\u010Dov\u00E1na pravd\u011Bpodobnost poru\u0161ov\u00E1n\u00ED pro makroskopick\u00E9 tvarov\u00E9 odchylky ku\u017Eelov\u00E9ho spojen\u00ED (ku\u017Eelovitost, p\u0159\u00EDmost a kruhovitost) a n\u00E1sledn\u011B pro mikroskopick\u00E9 tvarov\u00E9 odchylky, kter\u00E9 se nabaluj\u00ED na makroskopick\u00E9 odchylky. Byly \u0159e\u0161eny varianty pro testovac\u00ED a fyziologick\u00E9 zat\u011B\u017Eovac\u00ED podm\u00EDnky. \u0158e\u0161en\u00ED probl\u00E9mu spolehlivosti keramick\u00FDch hlavic"@cs . "9"^^ . "Neuvedeno."@en . "Zv\u00FD\u0161en\u00ED \u00FArovn\u011B v\u00FDpo\u010Dtov\u00E9ho modelov\u00E1n\u00ED pro ur\u010Dov\u00E1n\u00ED pravd\u011Bpodobnosti poru\u0161en\u00ED keramick\u00E9 hlavice ky\u010Deln\u00ED endoprot\u00E9zy"@cs . . "Functionality, biotolerance and reliability are basic properties required for any endoprostheses. In relationship to the main project, the submitted project deals with a reliability problem of ceramic heads of total hip joint endoprostheses. The solutionto this problem was invoked by recent more frequent failures of these heads in clinical practice. A solution methodology was proposed and verified in the previous steps of the solution. Results of computational and experimental modelling have shown a substantial influence of shape deviations in the conical connection between stem and head on the initiation of ceramic head fractures. The fracture probability was evaluated step by step for various macroscopic shape deviations in the conical connection and then for microscopic shape deviations superposed on the macroscopic deviations. The solution to the problem of ceramic head reliability requires realization of two computational models: one for determination of stress states and another one for"@en . . . . "0"^^ . . "Enhancement of the computational modelling level for evaluation of the failure probability of the hip joint endoprosthesis ceramic head"@en . . . "473"^^ . "1"^^ . "0"^^ . . . . "473"^^ .