دورية أكاديمية
Impact of a void in the equine medial femoral condyle on bone stresses and peak contact pressures in a finite element model.
| العنوان: | Impact of a void in the equine medial femoral condyle on bone stresses and peak contact pressures in a finite element model. |
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| المؤلفون: | Frazer LL; Bioengineering Program, University of Kansas, Lawrence, Kansas., Santschi EM; Department of Clinical Sciences, Kansas State University College of Veterinary Medicine, Manhattan, Kansas., Fischer KJ; Department of Mechanical Engineering, University of Kansas, Lawrence, Kansas. |
| المصدر: | Veterinary surgery : VS [Vet Surg] 2019 Feb; Vol. 48 (2), pp. 237-246. Date of Electronic Publication: 2018 Dec 16. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: John Wiley & Sons Country of Publication: United States NLM ID: 8113214 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1532-950X (Electronic) Linking ISSN: 01613499 NLM ISO Abbreviation: Vet Surg Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Malden, MA : John Wiley & Sons Original Publication: Philadelphia : Lippincott. |
| مواضيع طبية MeSH: | Finite Element Analysis* , Horses*, Bone and Bones/*physiology, Animals ; Biomechanical Phenomena ; Humans ; Pressure ; Stress, Mechanical |
| مستخلص: | Objective: To predict bone and medial meniscal stresses and contact pressures in an equine stifle with a medial femoral condyle (MFC) intact or with a 2-cm 3 subchondral bone void, under varying degrees of internal femoral rotation (IFR). Study Design: Finite element model (FEM) of a cadaveric equine stifle loaded to 8000 N. Methods: The FEM was constructed from computed tomography (CT) of the right, extended stifle of a yearling. The CT image was segmented into relevant anatomic structures and meshed into 4-node tetrahedrons. Bone material properties were assigned according to Hounsfield units, soft tissue properties were estimated from published data, and the model was loaded to 8000 N in 155° extension. Results: The main stresses found in the intact MFC were in compression, with very small areas of shear and tension. Adding a 2-cm 3 MFC void increased peak compression stress by 25%, shear by 50%, and tension by 200%. An MFC void also increased tension and shear placed on the medial meniscus by 30%. Under load, IFR of 2.5° and 5° increased MFC peak stresses 8%-21%. Conclusion: A 2-cm 3 MFC void in an equine stifle FEM increased stress in the bone and meniscus. Internal femoral rotation slightly increased predicted bone stress. Clinical Significance: Increases in bone and meniscal stress predicted in an MFC with a void provide evidence to understand the persistence of voids and mechanism of damage to the medial meniscus. (© 2018 The American College of Veterinary Surgeons.) |
| معلومات مُعتمدة: | Madison and Lila Self Graduate Fellowship, University of Kansas |
| تواريخ الأحداث: | Date Created: 20181218 Date Completed: 20190325 Latest Revision: 20190325 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1111/vsu.13139 |
| PMID: | 30556152 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1532-950X |
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| DOI: | 10.1111/vsu.13139 |