Biomechanical comparison of a transiliac internal fixator and two iliosacral screws in transforaminal sacral fractures: a finite element analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11140%2F15%3A10283176" target="_blank" >RIV/00216208:11140/15:10283176 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23520/15:43927427 RIV/00669806:_____/15:10283176

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Biomechanical comparison of a transiliac internal fixator and two iliosacral screws in transforaminal sacral fractures: a finite element analysis

Popis výsledku v původním jazyce

Purpose: Vertically unstable sacral transforaminal fractures can be stabilized with a transiliac internal fixator (TIFI) or two iliosacral screws (IS). This study was designed to compare stiffness between TIFI and IS. Methods: Using CT images finite element model of the pelvis was developed. Denis II type fracture was simulated and fixed either with TIFI or two IS. The sacral base was loaded vertically (250-500 N), displacement magnitudes on medial and lateral fracture surface and the maximum bone stress were calculated. The intact pelvis was used as a reference. Stiffness was determined by linear regression of load and dislocation, computed stiffness ratio %. Von Mises stress was expressed as % ratio, evaluation of colour mapping was made. Results: The mean stiffness ratio medially in TIFI was 75.22 %, in IS 46.54 % (p=0.00005), laterally in TIFI 57.88 %, in IS 44.74 % (p=0.03996). Von Mises stress ratio of TIFI was 139.27 %, of IS 565.35 % (p < 0.00001). Conclusions: Significantly hi

Název v anglickém jazyce

Biomechanical comparison of a transiliac internal fixator and two iliosacral screws in transforaminal sacral fractures: a finite element analysis

Popis výsledku anglicky

Purpose: Vertically unstable sacral transforaminal fractures can be stabilized with a transiliac internal fixator (TIFI) or two iliosacral screws (IS). This study was designed to compare stiffness between TIFI and IS. Methods: Using CT images finite element model of the pelvis was developed. Denis II type fracture was simulated and fixed either with TIFI or two IS. The sacral base was loaded vertically (250-500 N), displacement magnitudes on medial and lateral fracture surface and the maximum bone stress were calculated. The intact pelvis was used as a reference. Stiffness was determined by linear regression of load and dislocation, computed stiffness ratio %. Von Mises stress was expressed as % ratio, evaluation of colour mapping was made. Results: The mean stiffness ratio medially in TIFI was 75.22 %, in IS 46.54 % (p=0.00005), laterally in TIFI 57.88 %, in IS 44.74 % (p=0.03996). Von Mises stress ratio of TIFI was 139.27 %, of IS 565.35 % (p < 0.00001). Conclusions: Significantly hi

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

FI - Traumatologie a ortopedie

OECD FORD obor

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Projekt

<a href="/cs/project/ED1.1.00%2F02.0090" target="_blank" >ED1.1.00/02.0090: NTIS - Nové technologie pro informační společnost</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta of Bioengineering and Biomechanics

ISSN

1509-409X

e-ISSN

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Svazek periodika

17

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

11

Strana od-do

39-49

Kód UT WoS článku

000354024600005

EID výsledku v databázi Scopus

2-s2.0-84929164388