Impact of different dosages of e-beam irradiation on mechanical strength of vitamin E-blended ultra-high-molecular-weight polyethylene and the osteolytic activities of its wear debris
{"title":"Impact of different dosages of e-beam irradiation on mechanical strength of vitamin E-blended ultra-high-molecular-weight polyethylene and the osteolytic activities of its wear debris","authors":"Junki Shiota , Daisuke Takahashi , Liyile Chen , Shunichi Yokota , Tomoyo Yutani , Hend Alhasan , Tsutomu Endo , Tomohiro Sugimoto , Keita Uetsuki , M Alaa Terkawi , Norimasa Iwasaki","doi":"10.1016/j.mtla.2025.102345","DOIUrl":null,"url":null,"abstract":"<div><div>Global medical implant manufacturing has been extensively focused on the development of materials with high mechanical strength, fatigue resistance and reduced biologically osteolytic activity in vivo. Electron beam (e-beam) irradiation has been widely used for creating a highly crosslinked vitamin E blended UHMWPE. Here, we evaluated the mechanical properties of VE-UHMWPE irradiated by e-beam with dosages of 150 and 300 kGy, and the biological responses to the material wear debris. Oxidation index values for VE-UHMWPE irradiated by 300 kGy were significantly higher than these irradiated by 150 kGy. Although VE-UHMWPE irradiated by 300 kGy exhibited significantly reduced values of the impact strength values and elongation as compared to these irradiated by 150 kG, wear productions in hip simulator test were comparable in both types of VE-UHMWPE. Furthermore, both types of VE-UHMWPE particles induced comparable inflammatory responses and osteolytic activities in vitro and in vivo. The better mechanical properties of 150-irradiated VE-UHMWPE suggest that this dosage is appropriate for crosslinking UHMWPE material of the prostheses.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"39 ","pages":"Article 102345"},"PeriodicalIF":3.0000,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materialia","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589152925000122","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Global medical implant manufacturing has been extensively focused on the development of materials with high mechanical strength, fatigue resistance and reduced biologically osteolytic activity in vivo. Electron beam (e-beam) irradiation has been widely used for creating a highly crosslinked vitamin E blended UHMWPE. Here, we evaluated the mechanical properties of VE-UHMWPE irradiated by e-beam with dosages of 150 and 300 kGy, and the biological responses to the material wear debris. Oxidation index values for VE-UHMWPE irradiated by 300 kGy were significantly higher than these irradiated by 150 kGy. Although VE-UHMWPE irradiated by 300 kGy exhibited significantly reduced values of the impact strength values and elongation as compared to these irradiated by 150 kG, wear productions in hip simulator test were comparable in both types of VE-UHMWPE. Furthermore, both types of VE-UHMWPE particles induced comparable inflammatory responses and osteolytic activities in vitro and in vivo. The better mechanical properties of 150-irradiated VE-UHMWPE suggest that this dosage is appropriate for crosslinking UHMWPE material of the prostheses.
期刊介绍:
Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials.
Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).