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Materials
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State-of-the-Art Materials Science and Engineering in Romania in 2024
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State-of-the-Art Materials Science and Engineering in Romania in 2024

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: 20 December 2024 | Viewed by 1566

Special Issue Editors

Prof. Dr. Iulian Vasile Antoniac

E-Mail Website
Guest Editor
Faculty of Material Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei Street, District 6, 060042 Bucharest, Romania
Interests: biodegradable metallic biomaterials; medical devices; surface modification; tissue–biomaterials interaction; bioceramics; biocomposites; biointerfaces; tissue engineering; bone regeneration; retrieval and failure analysis of orthopedic and dental implants
Special Issues, Collections and Topics in MDPI journals
Dr. Aura-Catalina Mocanu

E-Mail Website
Guest Editor
Faculty of Material Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei Street, District 6, 060042 Bucharest, Romania
Interests: materials characterization and testing; biomaterials; bioceramics; composites; bone regeneration; 3D printing
Dr. Ana-Iulia Bita

E-Mail Website
Guest Editor
Faculty of Material Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei Street, District 6, 060042 Bucharest, Romania
Interests: materials characterization and testing; biomaterials; biodegradable metals; implants; surgical instruments; 3D printing; surface engineering; adhesion and interface phenomena

Special Issue Information

Dear Colleagues,

It is my pleasure to invite you to submit manuscripts for inclusion in the Special Issue titled “State-of-the-Art Materials Science and Engineering in Romania in 2024”.

The main purpose of this Special Issue is to publish selected, original scientific papers written by Romanian scientists, describing research work carried out on materials using the latest technological advancements. This Special Issue’s thematic scope is by no means limited, and we hope to receive interesting and innovative papers contributing to the development of this interdisciplinary area of material-related scientific and technical research.

Materials present a research challenge in various fields such as biomedical, security and defense, electronics, aerospace and automotive, mechanical engineering, chemical engineering, electrical engineering, and natural science.

We welcome original research and reviews focusing on macro- to nano-level advanced and smart materials, surface modifications, mechanical and thermo-physical properties, characterization techniques, new technological solutions, and process improvements dedicated to achieving progress in materials sciences and engineering.

By publishing this Special Issue, we hope to present novel research in materials science and increase the visibility of Romanian-led research in the fields of materials science and engineering.

Prof. Dr. Iulian Vasile Antoniac
Dr. Aura-Catalina Mocanu
Dr. Ana-Iulia Bita
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • functional materials
  • structure properties relationships
  • processes and technologies
  • characterization and testing
  • surface modification
  • 3D printing
  • failure analysis

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (1 paper)

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Research

19 pages, 5908 KiB  
Article
Outcomes of Birmingham Hip Resurfacing Based on Clinical Aspects and Retrieval Analysis of Failed Prosthesis
by Iulian Antoniac, Niculae Valeanu, Marius Niculescu, Aurora Antoniac, Alina Robu, Larisa Popescu, Veronica Manescu (Paltanea), Dan Anusca and Catalin Ionel Enachescu
Materials 2024, 17(16), 3965; https://doi.org/10.3390/ma17163965 - 9 Aug 2024
Viewed by 970
Abstract
This research aims to identify the prevalence of failure for Birmingham Hip Prosthesis (BHR) in total hip arthroplasty and to analyze its reasons from biomaterials and biofunctional perspectives. We present our current analysis and tests on a series of different BHR-retrieved prostheses after [...] Read more.
This research aims to identify the prevalence of failure for Birmingham Hip Prosthesis (BHR) in total hip arthroplasty and to analyze its reasons from biomaterials and biofunctional perspectives. We present our current analysis and tests on a series of different BHR-retrieved prostheses after premature failure. Relevant clinical data, such as X-ray investigations and intraoperative images for clinical case studies, were analyzed to better understand all factors involved in BHR prosthesis failure. A detailed analysis of the failures highlighted uneven cement distribution, overloading in certain areas, and void formation in the material. A closer investigation using microscopical techniques revealed the presence of a crack originating from the gap between the cement mantle and human bone. Additionally, scanning electron microscopy analyses were conducted as part of the investigation to examine bone cement morphology in detail and better understand the interactions at the interfaces between implant, cement, and bone. In conclusion, this research emphasizes the importance of surgical technique planning and the cementation procedure in the success rate of BHR prostheses. It also underscores the need to carefully evaluate patient characteristics and bone quality to minimize the risk of BHR prosthesis failure. The cementation procedure seems to be essential for the long-term functionality of the BHR prosthesis. Full article
(This article belongs to the Special Issue State-of-the-Art Materials Science and Engineering in Romania in 2024)
►▼ Show Figures

Figure 1

Figure 1
<p>Distribution by age categories of BHR prosthesis cases from Colentina Clinical Hospital, Bucharest, Romania.</p> Full article ">Figure 2
<p>Graphical representation of failure rates in total hip resurfacing procedures (including single or both component revision surgery), with a focus on aseptic lymphocyte-dominant vasculitis-associated lesions (ALVAL).</p> Full article ">Figure 3
<p>The Kaplan-Meier survival analysis depicting the Birmingham Hip Resurfacing outcomes, stratified by gender, with revision for any cause as the critical endpoint.</p> Full article ">Figure 4
<p>X-ray images and intraoperative analysis of BHR prosthesis failures: (<b>a</b>) X-rays showing implantation angles and assessment of joint biomechanics; (<b>b</b>) Intraoperative images illustrating the surgical technique and implantation methodology.</p> Full article ">Figure 5
<p>Explanted acetabular cup demonstrating successful tissue integration: (<b>a</b>) Macroscopic analysis; (<b>b</b>) Scanning electron microscopy analysis.</p> Full article ">Figure 6
<p>X-rays of acetabular component failure taking into consideration the edge-loading at different degrees of load: (<b>a</b>) Excessive vertical bucket positioning; (<b>b</b>) A higher degree of inclination due to an inefficient positioning maneuver.</p> Full article ">Figure 7
<p>X-rays of femoral component failure: analysis of the consequences of inadequate positioning of the prosthesis.</p> Full article ">Figure 8
<p>Intraoperative images: monitoring bone integration and adjusting prosthesis position.</p> Full article ">Figure 9
<p>Contextual exemplification of analyzed samples according to the reference model: regions of interest used for cement thickness and penetration analysis (1–3).</p> Full article ">Figure 10
<p>Explant BHR prosthesis—sample 1 analysis, the dome of the cap (zone 1), the intermediate (zone 2), and the radial (zone 3) regions: (<b>a</b>) Cementing defect evidenced by air bubbles; (<b>b</b>) SEM micrograph of the cement in the defect area.</p> Full article ">Figure 11
<p>Explant BHR prosthesis—sample 2 analysis, the dome of the cap (zone 1), the intermediate (zone 2), and the radial (zone 3) regions: (<b>a</b>) Cementing defect evidenced by poor interface; (<b>b</b>) SEM micrograph of the cement in the defect area presenting crack-type defects.</p> Full article ">Figure 12
<p>Explant BHR prosthesis—sample 3 analysis, the dome of the cap (zone 1), the intermediate (zone 2), and the radial (zone 3) regions: (<b>a</b>) Cementing defect evidenced by irregular texture; (<b>b</b>) SEM micrograph of the cement in the defect area.</p> Full article ">
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