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The TC double socket above-knee prosthesis

K Koike, Y Ishikura, S Kakurai

    Prosthetics and Orthotics International
    |December 1, 1981
    PubMed
    Summary
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    A new thermoplastic double socket above-knee prosthesis (AK prosthesis) was developed to overcome issues with conventional designs. This innovative TC prosthesis offers improved comfort and function for amputees, with satisfactory results reported in clinical use.

    Area of Science:

    • Prosthetics and Orthotics
    • Biomedical Engineering
    • Rehabilitation Medicine

    Background:

    • Conventional above-knee (AK) prostheses present challenges including difficult socket wear, poor stump tissue management, and perspiration issues.
    • These limitations can negatively impact the comfort and functionality for individuals with AK limb loss.

    Purpose of the Study:

    • To introduce and evaluate a novel thermoplastic double socket AK prosthesis designed to address the shortcomings of conventional designs.
    • To assess the clinical efficacy and patient satisfaction with the new TC prosthesis.

    Main Methods:

    • Development of a thermoplastic double socket system, comprising an external socket and a detachable internal socket.
    • Introduction of two models: TC-1 with a metal valve and TC-2 with an improved rubber sheet valve.

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  • Clinical fitting of the TC-1 prosthesis to 295 AK amputees and the TC-2 prosthesis to 145 AK amputees.

    • Main Results:

    • The thermoplastic double socket design effectively resolved the disadvantages associated with conventional AK prostheses.
    • Both TC-1 and TC-2 models demonstrated satisfactory outcomes in a significant number of amputees fitted since 1978 and 1980, respectively.
    • The TC-2 prosthesis, featuring a rubber sheet valve, addressed specific issues encountered with the metal valve of the TC-1.

    Conclusions:

    • The developed TC prosthesis, utilizing a thermoplastic double socket, offers a superior alternative to conventional AK prostheses.
    • The design improvements, including the valve mechanism, contribute to enhanced patient comfort and prosthetic function.
    • The successful clinical application in hundreds of amputees validates the effectiveness of this innovative prosthetic solution.