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A canine cementless total hip prosthesis model.

P Q Chen, T M Turner, H Ronnigen

    Clinical Orthopaedics and Related Research
    |June 1, 1983
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    Porous titanium fiber composites demonstrated successful fixation in total hip arthroplasty via bony ingrowth in dogs. Bone remodeling occurred around the implants, with some non-progressive osteoporosis noted.

    Area of Science:

    • Biomaterials Science
    • Orthopedic Surgery
    • Veterinary Medicine

    Background:

    • Total hip arthroplasty (THA) requires stable fixation of implants.
    • Porous titanium fiber composites offer potential for biological fixation.
    • Evaluating new fixation methods is crucial for improving THA outcomes.

    Purpose of the Study:

    • To assess the efficacy of porous fiber titanium composite for hip implant fixation.
    • To compare titanium composite fixation with traditional acrylic cement fixation in THA.
    • To evaluate bone ingrowth and remodeling around titanium composite implants.

    Main Methods:

    • Total hip arthroplasty was performed in 13 mongrel dogs.
    • Implants were fixed using porous titanium fiber composite or acrylic cement.

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  • Animals were euthanized at 1, 3, and 6 months post-implantation for analysis.

    • Main Results:

    • All porous titanium fiber composite components achieved fixation through bony ingrowth.
    • Progressive bone remodeling, including thickening and haversian structure development, was observed.
    • Cortical osteoporosis was detected but did not appear to be progressive.

    Conclusions:

    • Porous fiber titanium composite is a viable fixation method for THA, promoting bony ingrowth.
    • The material supports bone remodeling and integration, suggesting long-term stability.
    • Further research may explore optimizing composite design and assessing long-term effects in clinical settings.