Numerical evaluation of internal femur osteosynthesis based on a biomechanical model of the loading in the proximal equine hindlimb
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Le résumé fourni par la source
Femoral fractures are often considered lethal for adult horses because femur osteosynthesis is still a surgical challenge. For equine femur osteosynthesis, primary stability is essential, but the detailed physiological forces occurring in the hindlimb are largely unknown. The objective of this study was to create a numerical testing environment to evaluate equine femur osteosynthesis based on physiological conditions. The study was designed as a finite element analysis (FEA) of the femur using a musculoskeletal model of the loading situation in stance. Relevant forces were determined in the musculoskeletal model via optimization. The treatment of four different fracture types with an intramedullary nail was investigated in FEA with loading conditions derived from the model. The analyzed diaphyseal fracture types were a transverse (TR) fracture, two oblique fractures in different orientations (OB-ML: medial-lateral and OB-AP: anterior-posterior) and a "gap" fracture (GAP) without contact between the fragments. For the native femur, the most relevant areas of increased stress were located distally to the femoral head and proximally to the caudal side of the condyles. For all fracture types, the highest stresses in the implant material were present in the fracture-adjacent screws. Maximum compressive (-348 MPa) and tensile stress (197 MPa) were found for the GAP fracture, but material strength was not exceeded. The mathematical model was able to predict a load distribution in the femur of the standing horse and was used to assess the performance of internal fixation devices via FEA. The analyzed intramedullary nail and screws showed sufficient stability for all fracture types.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Numerical evaluation of internal femur osteosynthesis based on a biomechanical model of the loading in the proximal equine hindlimb
- Date Crossref
- 10/05/2024
- Éditeur
- Springer Science and Business Media LLC
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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TUM Klinikum pays non établi dans la noticeÉtablissement de santé
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Technical University of Munich Munich Institute of Robotics and Machine Intelligence pays non établi dans la noticeUniversité ou école supérieure
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Research Centre of Medical Technology and Biotechnology pays non établi dans la noticeÉtablissement de santé
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TUM School of Engineering and Design Chair of Non-destructive Testing pays non établi dans la noticeUniversité ou école supérieure
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TUM School of Medicine Department of Orthopedics and Sports Orthopedics pays non établi dans la noticeUniversité ou école supérieure
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Equine Clinic of the Research Centre for Medical Technology and Biotechnology pays non établi dans la noticeStructure de recherche
TUM Klinikum, Munich Institute of Robotics and Machine Intelligence — Technical University of Munich et Research Centre of Medical Technology and Biotechnology, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.