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  • 1.  Cheaper material options for medical implants

    Raigarth Chapter Admin
    Posted 26 days ago
    Looking at the implants requirements for poor patients , it is requested to deliberate on cheaper options e.g. Cr-Mo , Ti alloy  to nickel free austenitic stainless steels.ASM may play important role in this .
    Regards
    Dr. Shivraj Singh Kasana
    ASM Handbook 23A


  • 2.  RE: Cheaper material options for medical implants

    Posted 26 days ago
    Edited by Ho Lun Chan 26 days ago
    Hi Shivra, 

    I am sure that the ISO 5832: 2021 requirements may be able to offer some insights: 
    https://www.iso.org/obp/ui#iso:std:iso:5832:-3:ed-5:v1:en

    It also depends on the specific parts (e.g. cup, stem for hip implants). From the standard, high nitrogen stainless steel is recommended for stems and either Co-Cr or Ti64 is suggested for both cups and stems. What kind of implants are you referring to? 

    I personally recommend investment in more robust and corrosion resistant materials. Metallic implants have the issues of osteolysis (inflammation that leads to loosening) and metalloids (corrosion product build up) couple with other issues such as bone loss, dislocation, tissue damage etc. These problems account for somewhat 17180 revisions between 2012-2015 (data probably outdated but we got the idea). Any record on materials longevity, revision frequency may be good questions to ask if you end up talking to a manufacturer? 

    Not too much of an expert in this area but would stay on this thread to see other potential responses. 


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    Lun Chan
    PhD Student, University of Virginia
    Charlottesville VA
    (323) 688-7872
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    ASM Handbook 23A