An experimental study of the heterogeneity and anisotropy of porcine meniscal ultimate tensile strength.

Autor: Long T; Department of Mechanical and Materials Engineering, College of Engineering and Applied Science, University of Cincinnati, 2901 Woodside Drive, Cincinnati, 45221-0072, OH, USA., Vemaganti K; Sandia National Laboratories, 1515 Eubank Blvd. SE, Albuquerque, 87123, NM, USA., Hawes JE; Department of Biomedical Engineering, College of Engineering and Applied Science, University of Cincinnati, 2901 Woodside Drive, Cincinnati, 45221-0012, OH, USA., Lin CY; Department of Orthopaedic Surgery, College of Medicine, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, 45267-0212, OH, USA. Electronic address: linc9@ucmail.uc.edu.
Jazyk: angličtina
Zdroj: Journal of the mechanical behavior of biomedical materials [J Mech Behav Biomed Mater] 2024 Sep; Vol. 157, pp. 106649. Date of Electronic Publication: 2024 Jul 08.
DOI: 10.1016/j.jmbbm.2024.106649
Abstrakt: Characterizing the ultimate tensile strength (UTS) of the meniscus is critical in studying knee damage and pathology. This study aims to determine the UTS of the meniscus with an emphasis on its heterogeneity and anisotropy. We performed tensile tests to failure on the menisci of six month old Yorkshire pigs at a low strain rate. Specimens from the anterior, middle and posterior regions of the meniscus were tested in the radial and circumferential directions. Then the UTS was obtained for each specimen and the data were analyzed statistically, leading to a comprehensive view of the variations in porcine meniscal strength. The middle region has the highest average strength in the circumferential (43.3 ± 4.7 MPa) and radial (12.6 ± 2.2 MPa) directions. This is followed by the anterior and posterior regions, which present similar average values (about 34.0MPa) in circumferential direction. The average strength of each region in the radial direction is approximately one-fourth to one-third of the value in the circumferential direction. This study is novel as it is the first work to focus on the experimental methods to investigate the heterogeneity and anisotropy only for porcine meniscus.
Competing Interests: Declaration of competing interest I certify that there is no conflict of interest.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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