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“Golden days” for patients who are sensitive to metal:
Joint prostheses with hypoallergenic surface modification
The hypoallergenic TiNbN surface modification LINK PorEx® is the ideal solution for patients with a suspected metal hypersensitivity. LINK PorEx® Surface Modification reduces the release of allergenic ions by around ~95%1. In addition, it has a low coefficient of friction vis-à-vis polyethylene (UHMWPE) due to its outstanding hardness, its ceramic-like abrasion behavior, and its wetting angle in contact with liquids2 3 4. All this results in optimized sliding and friction properties for the prosthesis together with a considerable reduction in wear.
LINK PorEx® is a titanium niobium nitride (TiNbN) hard surface modification which has been in use in Europe for over ten years to offer protection against wear and allergies in orthopedic applications. LINK PorEx® surface modification only contains the hypoallergenic elements titanium and niobium, and no chrome or nickel.
Excellent adhesive strength, optimal fatigue strength
In addition to its great strength, biocompatibility5 6 7, high corrosion resistance8 9 and wear protection, LINK PorEx® surface modification is also characterized by pronounced adhesive strength and high fatigue strength10. The thickness of the LINK PorEx® Surface Modification is 4.5 ± 1.5 µm. In terms of hardness, LINK PorEx® achieves values of approx. 2400 HV (0.1 N), compared to around 550 HV (0.1 N) for CoCrMo alloys.
The “golden four” from LINK
LINK PorEx® Surface Modification is available for the LINK® GEMINI® SL® Total Knee Replacement
the LINK® Unicondylar Sled and the LINK® Endo-Model® Standard- and M Knee Prosthesis (except cemented Modular Stems) . All other suitable LINK implants, e.g., Arthrodesis Nails, can be customized with LINK PorEx®. For patients who suffer hypersensitivity reactions to bone cement, LINK also offers the surface as a customized version for cementless fixation.
Solutions for hip patients
For patients with hip replacements who are hypersensitive to metal or allergic to titanium, LINK offers special customized solutions.
LINK has been developing joint implants, made in Germany, for 50 years.
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