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Correlation of the Microstructural and Mechanical Strength of the Trabecular Bone - The Primary Compression Trabeculae in Human Femoral Head -

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dc.contributor.author백, 명현-
dc.contributor.author원, 예연-
dc.contributor.author최, 문권-
dc.contributor.author김, 영은-
dc.date.accessioned2014-01-22T06:43:43Z-
dc.date.available2014-01-22T06:43:43Z-
dc.date.issued2009-
dc.identifier.issn1738-0359-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/9041-
dc.description.abstractObjectives: Bone mechanical strength is one of the factors to assess for bone fracture risk. Many researchers try to predict the fracture risk by using morphometry indices, experimental test (Instron) and a finite element analysis (FEA). The purpose of this study was to evaluate the correlation between the microstructural property and mechanical strength in the primary compression trabeculae in the human femoral head.



Methods: Twenty-one human femoral heads were obtained from 11 patients undergoing a total hip replacement and 10 cadavers. Cylindrical trabecular bone samples were cored from the primary compressive trabecular pattern in the femoral head. The sample size has diameter of 19 mm and a height of 15 mm. All samples were scanned with a micro-CT at a spatial resolution of 21.31μm. Based on the serial micro-images, the structural properties were directly calculated from ANT software. The mechanical strength was calculated for the experimental test and the FEA.



Results: The average yield stress and elastic modulus from the FEA and the Instron system were 13.58 ㎫ and 266.81 ㎫, 13.17 ㎫ and 288.51 ㎫, respectively. Pearson correlations between the morphometry indices, Tb.Sp, BV, BS/BV, BV/TV, MIL and Tb.N were significantly correlated with the mechanical strength.



Conclusion: This result indicates that significant correlation the mechanical strength and structural properties can be a useful tool to predict the bone mechanical strength.
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dc.description.abstract목적: 뼈 강도를 평가함에 있어서 기계적 강도는 구조적 특성과 더불어 중요한 인자이다. 많은 연구자들은 해면뼈의 구조적 특성과 기계적 강도를 분석하여 뼈 강도를 평가하고자 노력하고 있다. 본 연구에서는 해면뼈의 미세구조적 특성과 기계적 강도를 분석하여 상관관계를 평가하고자 하였다.



방법: 인공 고관절 치환술을 받은 환자 11례와 사체에서 10례, 총 21례의 으뜸 압박 골소주군에서 원통형 샘플을 제작하였다. 샘플의 크기는 직경 19 mm, 높이 15 mm이었다. 모든 샘플은 미세단층촬영기에 의해서 촬영되어 미세구조적 특성이 분석되었다. 또한 유한요소해석과 만능재료시험기를 이용하여 압축실험을 수행하여 기계적 강도를 구하였다.



결과: 항복응력과 탄성계수는 유한요소해석과 만능재료시험기에서 각각 13.58 ㎫과 266.81 ㎫ 그리고 13.17 ㎫과 288.51 ㎫로 분석되었다.



결론: 기계적 강도와 구조적 특성은 유의한 상관관계를 보임으로서 뼈 강도를 예측할 때 구조적 특성과 더불어 기계적 강도를 분석한다면 보다 정확한 예측이 가능하리라 사려된다.
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dc.language.isoko-
dc.titleCorrelation of the Microstructural and Mechanical Strength of the Trabecular Bone - The Primary Compression Trabeculae in Human Femoral Head --
dc.title.alternative해면뼈의 구조적 특성과 기계적 강도의 상관관계 - 사람 대퇴골두 으뜸 압박 골수주 --
dc.typeArticle-
dc.identifier.urlhttp://www.koreanosteoporosis.or.kr/journal/view.html?book=Journal&start=0&scale=10&key=all&key_word=&Vol=7&Num=&PG=84&year1=2009&year2=2009&sort=Publisher_date+desc&aut_box=Y&sub_box=Y&sos_box=&key_box=&pub_box=Y&abs_box=&mod=&sflag=&uid=&multi%5B%5D=141-
dc.subject.keyword뼈 강도-
dc.subject.keyword구조적 특성-
dc.subject.keyword기계적 강도-
dc.subject.keyword유한요소해석-
dc.subject.keyword미세단층촬영기-
dc.subject.keywordBone strength-
dc.subject.keywordMicrostructural property-
dc.subject.keywordMechanical strength-
dc.subject.keywordFinite Element Analysis-
dc.subject.keywordMicro-CT-
dc.contributor.affiliatedAuthor원, 예연-
dc.type.localJournal Papers-
dc.citation.titleJournal of Korean Society of Osteoporosis-
dc.citation.volume7-
dc.citation.number2-
dc.citation.date2009-
dc.citation.startPage84-
dc.citation.endPage95-
dc.identifier.bibliographicCitationJournal of Korean Society of Osteoporosis, 7(2). : 84-95, 2009-
dc.relation.journalidJ017380359-
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Orthopedic Surgery
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