Does femoral strain distribution coincide with the occurrence of cervical versus trochanteric hip fractures? An experimental finite element study.
The objective of this experimental finite element (FE) study is to test the hypothesis that strain distributions coincide with the occurrence of cervical versus trochanteric hip fractures during loading conditions simulating a sideways fall, and that the cervical versus trochanteric principal strain...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 48; no. 7; pp. 711 - 718 |
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| Autores principales: | , , , , , , , , , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Jul2010
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104569247&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104569247 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Jul2010 vid: 48 iid: 7 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104569247 NLM20490945 2010687592 10.1007/s11517-010-0622-1 NLM20490945 104569247 ppf: 711 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Does femoral strain distribution coincide with the occurrence of cervical versus trochanteric hip fractures? An experimental finite element study. aug: au: Koivumäki JE Thevenot J Pulkkinen P Salmi JA Kuhn V Lochmüller EM Link TM Eckstein F Jämsä T Koivumäki, Janne E M Thevenot, Jérôme Pulkkinen, Pasi Salmi, Jukka A Kuhn, Volker Lochmüller, Eva-Maria Link, Thomas M Eckstein, Felix Jämsä, Timo affil: Department of Medical Technology, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland sug: subj: Femur Physiopathology Hip Fractures Physiopathology Models, Biological Aged Aged, 80 and Over Female Finite Element Analysis Stress, Mechanical Aged: 65+ years Aged, 80 & over Female ab: The objective of this experimental finite element (FE) study is to test the hypothesis that strain distributions coincide with the occurrence of cervical versus trochanteric hip fractures during loading conditions simulating a sideways fall, and that the cervical versus trochanteric principal strain ratio predicts different fracture patterns. Cadaver femora (female, 83 +/- 9 years) were CT scanned and mechanically tested simulating a fall. Thirteen cervical and 13 trochanteric fracture cases were selected for FE analysis. Principal strain distributions were analysed, and strain ratio epsilon(C)/epsilon(T) for strain patterns over the cervical and trochanteric regions was computed. The ratio epsilon(C)/epsilon(T) in the femora with cervical fractures (mean +/- SD 1.103 +/- 0.127) differed from that in trochanteric fractures (0.925 +/- 0.137) (p = 0.001). The significant difference in the strain ratio between fracture types remained after accounting for femoral neck and trochanteric BMD (p = 0.014), showing that it is independent of BMD. Area under the ROC curve was 0.858 in the discrimination of fracture types. The model predicted the experimental fracture type correctly in 22 of 26 cases. The cervical versus trochanteric region principal strain ratio differed significantly between femora with experimental cervical versus trochanteric fractures, and 85% agreement was achieved for the occurrence of hip fracture types using a simple FE model. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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