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Materials and Modelling of Implantable Biomedical Devices

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Biomaterials".

Deadline for manuscript submissions: closed (20 March 2023) | Viewed by 4086

Special Issue Editors


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Guest Editor
ESAD – College of Art and Design, Avenida Calouste Gulbenkian, 4460-268 Senhora da Hora, Matosinhos, Porto, Portugal
Interests: biomechanics; biomaterials; biomaterial engineering; biomedical engineering; bioinspired engineering and biomimetic design; biomechanical engineering

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Guest Editor
Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
Interests: design of prosthesis and orthosis; medical devices; experimental in vitro model; computational models; interface bone implants

Special Issue Information

Dear Colleagues,

The study and modeling of implantable devices imply more complex analysis considerations than others referring to other types of conventional engineering systems. In fact, placing an implant in contact with living tissue through an interface introduces some unpredictability in its biomechanical and biological behavior. Although there have been significant scientific advances in the study of implantable systems, several problems continue to be recorded, especially those related to fixation, which is important in load transfer mechanisms because they precede their early failure. Thus, the design, materials and new emerging technologies that can be applied in the development of implantable biosystems must be modeled and studied, aiming for better and more adequate surgical procedures. There is potential in the development of new concepts, including artificial intelligence, which will allow, in the near future, to have intelligent implantable systems.

As guest editors, we propose that you submit your research concerning the analysis of biomaterials and numerical and experimental modeling of implantable biomedical systems.

Dr. José António Simões
Dr. António Manuel Monteiro Ramos
Guest Editors

Manuscript Submission Information

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Keywords

  • biomechanics
  • materials
  • modelling
  • biomedical devices
  • implant/prosthesis
  • finite element analysis
  • experimental biomechanics

Published Papers (1 paper)

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Research

19 pages, 6255 KiB  
Article
Design and Performance Evaluation of a Novel Spiral Head-Stem Trunnion for Hip Implants Using Finite Element Analysis
by Md Mohiuddin Soliman, Muhammad E. H. Chowdhury, Mohammad Tariqul Islam, Farayi Musharavati, Sakib Mahmud, Muhammad Hafizh, Mohamed Arselene Ayari, Amith Khandakar, Mohammad Kaosar Alam and Erfan Zal Nezhad
Materials 2023, 16(4), 1466; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16041466 - 9 Feb 2023
Cited by 4 | Viewed by 3839
Abstract
With an expectation of an increased number of revision surgeries and patients receiving orthopedic implants in the coming years, the focus of joint replacement research needs to be on improving the mechanical properties of implants. Head-stem trunnion fixation provides superior load support and [...] Read more.
With an expectation of an increased number of revision surgeries and patients receiving orthopedic implants in the coming years, the focus of joint replacement research needs to be on improving the mechanical properties of implants. Head-stem trunnion fixation provides superior load support and implant stability. Fretting wear is formed at the trunnion because of the dynamic load activities of patients, and this eventually causes the total hip implant system to fail. To optimize the design, multiple experiments with various trunnion geometries have been performed by researchers to examine the wear rate and associated mechanical performance characteristics of the existing head-stem trunnion. The objective of this work is to quantify and evaluate the performance parameters of smooth and novel spiral head-stem trunnion types under dynamic loading situations. This study proposes a finite element method for estimating head-stem trunnion performance characteristics, namely contact pressure and sliding distance, for both trunnion types under walking and jogging dynamic loading conditions. The wear rate for both trunnion types was computed using the Archard wear model for a standard number of gait cycles. The experimental results indicated that the spiral trunnion with a uniform contact pressure distribution achieved more fixation than the smooth trunnion. However, the average contact pressure distribution was nearly the same for both trunnion types. The maximum and average sliding distances were both shorter for the spiral trunnion; hence, the summed sliding distance was approximately 10% shorter for spiral trunnions than that of the smooth trunnion over a complete gait cycle. Owing to a lower sliding ability, hip implants with spiral trunnions achieved more stability than those with smooth trunnions. The anticipated wear rate for spiral trunnions was 0.039 mm3, which was approximately 10% lower than the smooth trunnion wear rate of 0.048 mm3 per million loading cycles. The spiral trunnion achieved superior fixation stability with a shorter sliding distance and a lower wear rate than the smooth trunnion; therefore, the spiral trunnion can be recommended for future hip implant systems. Full article
(This article belongs to the Special Issue Materials and Modelling of Implantable Biomedical Devices)
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