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ANGGORO D, PURBA MS, JIANG F, NISHIDA N, ITOH H, ITAMOTO K, NEMOTO Y, NAKAICHI M, SUNAHARA H, TANI K. Elucidation of the radius and ulna fracture mechanisms in toy poodle dogs using finite element analysis. J Vet Med Sci 2024; 86:575-583. [PMID: 38556325 PMCID: PMC11144531 DOI: 10.1292/jvms.23-0520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 03/18/2024] [Indexed: 04/02/2024] Open
Abstract
Fractures occurring in the distal radius and ulna of toy breed dogs pose distinctive challenges for veterinary practitioners, requiring specialized treatment approaches primarily based on anatomical features. Finite Element Analysis (FEA) was applied to conduct numerical experiments to determine stress distribution across the bone. This methodology offers an alternative substitute for directly investigating these phenomena in living dog experiments, which could present ethical obstacles. A three-dimensional bone model of the metacarpal, carpal, radius, ulna, and humerus was reconstructed from Computed Tomography (CT) images of the toy poodle and dachshund forelimb. The model was designed to simulate the jumping and landing conditions from a vertical distance of 40 cm to the ground within a limited timeframe. The investigation revealed considerable variations in stress distribution patterns between the radius and ulna of toy poodles and dachshunds, indicating notably elevated stress levels in toy poodles compared to dachshunds. In static and dynamic stress analysis, toy poodles exhibit peak stress levels at the distal radius and ulna. The Von Mises stresses for toy poodles reach 90.07 MPa (static) and 1,090.75 MPa (dynamic) at the radius and 1,677.97 MPa (static) and 1,047.98 MPa (dynamic) at the ulna. Conversely, dachshunds demonstrate lower stress levels for 5.39 MPa (static) and 231.79 MPa (dynamic) at the radius and 390.56 MPa (static) and 513.28 MPa (dynamic) at the ulna. The findings offer valuable insights for modified treatment approaches in managing fractures in toy breed dogs, optimizing care and outcomes.
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Affiliation(s)
- Dito ANGGORO
- Laboratory of Veterinary Surgery, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, Gadjah Mada University, Yogyakarta, Indonesia
| | - Melpa Susanti PURBA
- Laboratory of Veterinary Surgery, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Fei JIANG
- Department of Mechanical Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan
| | - Norihiro NISHIDA
- Department of Orthopedic Surgery, Graduate School of Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi ITOH
- Laboratory of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito ITAMOTO
- Laboratory of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Yuki NEMOTO
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Munekazu NAKAICHI
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi SUNAHARA
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji TANI
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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Pramudita JA, Hiroki W, Yoda T, Tanabe Y. Variations in Strain Distribution at Distal Radius under Different Loading Conditions. Life (Basel) 2022; 12:life12050740. [PMID: 35629407 PMCID: PMC9144860 DOI: 10.3390/life12050740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 11/16/2022] Open
Abstract
Distal radial fractures exhibit various fracture patterns. By assuming that the strain distribution at the distal radius affects the diversification of the fracture pattern, a parameter study using the finite element model of a wrist developed from computed tomography (CT) images was performed under different loading conditions. The finite element model of the wrist consisted of the radius, ulna, scaphoid, lunate, triquetrum, and major carpal ligaments. The material properties of the bone models were assigned on the basis of the Hounsfield Unit (HU) values of the CT images. An impact load was applied to the scaphoid, lunate, and triquetrum to simulate boundary conditions during fall accidents. This study considered nine different loading conditions that combine three different loading directions and three different load distribution ratios. According to the analysis results, the strain distribution at the distal radius changed with respect to the change in the loading condition. High strain concentration occurred in regions where distal radius fractures are commonly developed. The direction and distribution of the load acting on the radius were considered to be factors that may cause variations in the fracture pattern of distal radius fractures.
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Affiliation(s)
- Jonas A. Pramudita
- College of Engineering, Nihon University, Koriyama 963-8642, Japan
- Correspondence:
| | - Wataru Hiroki
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Takuya Yoda
- Graduate School of Medical and Dental Sciences, Niigata University, Niigata 950-2181, Japan;
| | - Yuji Tanabe
- Management Strategy Section, President Office, Niigata University, Niigata 950-2181, Japan;
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Revel M, Gardegaront M, Bermond F, Mitton D, Follet H. A credible homogenized finite element model to predict radius fracture in the case of a forward fall. J Mech Behav Biomed Mater 2022; 131:105206. [DOI: 10.1016/j.jmbbm.2022.105206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 03/23/2022] [Accepted: 03/26/2022] [Indexed: 11/15/2022]
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Revel M, Bermond F, Duboeuf F, Mitton D, Follet H. Influence of loading conditions in finite element analysis assessed by HR-pQCT on ex vivo fracture prediction. Bone 2022; 154:116206. [PMID: 34547523 DOI: 10.1016/j.bone.2021.116206] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 09/15/2021] [Accepted: 09/15/2021] [Indexed: 12/17/2022]
Abstract
Many fractures occur in individuals with normal areal Bone Mineral Density (aBMD) measured by Dual X-ray Absorptiometry (DXA). High Resolution peripheral Quantitative Computed Tomography (HR-pQCT) allows for non-invasive evaluation of bone stiffness and strength through micro finite element (μFE) analysis at the tibia and radius. These μFE outcomes are strongly associated with fragility fractures but do not provide clear enhancement compared with DXA measurements. The objective of this study was to establish whether a change in loading conditions in standard μFE analysis assessed by HR-pQCT enhance the discrimination of low-trauma fractured radii (n = 11) from non-fractured radii (n = 16) obtained experimentally throughout a mechanical test reproducing a forward fall. Micro finite element models were created using HR-pQCT images, and linear analyses were performed using four different types of loading conditions (axial, non-axial with two orientations and torsion). No significant differences were found between the failure load assessed with the axial and non-axial models. The different loading conditions tested presented the same area under the receiver operating characteristic (ROC) curves of 0.79 when classifying radius fractures with an accuracy of 81.5%. In comparison, the area under the curve (AUC) is 0.77 from DXA-derived ultra-distal aBMD of the forearm with an accuracy of 85.2%. These results suggest that the restricted HR-pQCT scanned region seems not sensitive to loading conditions for the prediction of radius fracture risk based on ex vivo experiments (n = 27).
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Affiliation(s)
- M Revel
- Univ Lyon, Univ Claude Bernard Lyon 1, INSERM, LYOS UMR1033, F69008 Lyon, France; Univ Lyon, Univ Gustave Eiffel, Univ Claude Bernard Lyon 1, LBMC UMR_T9406, F69622 Lyon, France
| | - F Bermond
- Univ Lyon, Univ Gustave Eiffel, Univ Claude Bernard Lyon 1, LBMC UMR_T9406, F69622 Lyon, France
| | - F Duboeuf
- Univ Lyon, Univ Claude Bernard Lyon 1, INSERM, LYOS UMR1033, F69008 Lyon, France
| | - D Mitton
- Univ Lyon, Univ Gustave Eiffel, Univ Claude Bernard Lyon 1, LBMC UMR_T9406, F69622 Lyon, France
| | - H Follet
- Univ Lyon, Univ Claude Bernard Lyon 1, INSERM, LYOS UMR1033, F69008 Lyon, France.
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Revel M, Bermond F, Mitton D, Follet H. Specimen-specific finite element prediction of surface strain at the distal radius in a fall configuration. Comput Methods Biomech Biomed Engin 2020. [DOI: 10.1080/10255842.2020.1815311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M. Revel
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM, LYOS UMR 1033, Lyon, France
- Univ Lyon, Université Claude Bernard Lyon 1, Univ Gustave Eiffel, LBMC UMR_T 9406, Lyon, France
| | - F. Bermond
- Univ Lyon, Université Claude Bernard Lyon 1, Univ Gustave Eiffel, LBMC UMR_T 9406, Lyon, France
| | | | - H. Follet
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM, LYOS UMR 1033, Lyon, France
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Revel M, Bermond F, Mitton D, Follet H. Evaluation of a finite element model to predict radius bone strain in a fall configuration. Comput Methods Biomech Biomed Engin 2020. [DOI: 10.1080/10255842.2020.1714992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- M. Revel
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM, LYOS UMR1033, Lyon, France
- Univ Lyon, Université Claude Bernard Lyon 1, IFSTTAR, LBMC UMR_T9406, Lyon, France
| | - F. Bermond
- Univ Lyon, Université Claude Bernard Lyon 1, IFSTTAR, LBMC UMR_T9406, Lyon, France
| | - D. Mitton
- Univ Lyon, Université Claude Bernard Lyon 1, IFSTTAR, LBMC UMR_T9406, Lyon, France
| | - H. Follet
- Univ Lyon, Université Claude Bernard Lyon 1, INSERM, LYOS UMR1033, Lyon, France
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