Fatigue test evaluation of a customised humeral component for an instrumented total elbow prosthesis and strain validation study

IF 1.7 4区医学 Q3 ENGINEERING, BIOMEDICAL

Medical Engineering & Physics Pub Date : 2025-02-24 DOI:10.1016/j.medengphy.2025.104311

Marim Basiouny , Simon Lambert , Chin Kuenfoo , Stephen Taylor

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引用次数: 0

Abstract

The survival rate of total elbow arthroplasty (TEA) is negatively impacted by the lack of available data on elbow biomechanics. This study developed a modified humeral component for TEA that is purposed to be instrumented to generate real-time 6 degrees of freedom (d.o.f) force and moment data during activities of daily living (ADL). The objectives are twofold: (1) to assess the safety of the modified humeral component under peak anticipated loads in fatigue, and (2) verify the strains measured under physiological loads with strains modelled using finite element analysis (FEA). Four modified titanium alloy humeral components were welded, and fatigue tested at 5 Hz for 5 million cycles under a compressive load of 700 N corresponding to moderate ADL. The strains were measured using triaxial 350 Ω rectangular rosette (45°) strain gauges bonded to three specific locations on the humeral component confirmed through an FE study. The four welded humeral components successfully withstood fatigue conditions and did not deform. The measured and modelled principal strains were confirmed to be highest at the external wall of the lateral cavity, with a percentage difference of <10 %.

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来源期刊

Medical Engineering & Physics 工程技术-工程：生物医学

CiteScore

4.30

自引率

4.50%

发文量

172

审稿时长

3.0 months

期刊介绍： Medical Engineering & Physics provides a forum for the publication of the latest developments in biomedical engineering, and reflects the essential multidisciplinary nature of the subject. The journal publishes in-depth critical reviews, scientific papers and technical notes. Our focus encompasses the application of the basic principles of physics and engineering to the development of medical devices and technology, with the ultimate aim of producing improvements in the quality of health care.Topics covered include biomechanics, biomaterials, mechanobiology, rehabilitation engineering, biomedical signal processing and medical device development. Medical Engineering & Physics aims to keep both engineers and clinicians abreast of the latest applications of technology to health care.