Title
Biokompatibilitt Von Implantaten In Der Orthopdie (Hefte Zur Zeitschrift 'Der Unfallchirurg', 144) (German Edition),Used
Delivery time: 8-12 business days (International)
1.1 Implantatmaterialien und ihre Bindung an das Implantatlager Die Entwicklung der orthopadischen Chirurgie ist in den vergangenen 2030 J ahren durch die standig zunehmende Implantation von Fremdmaterialien gekennzeichnet. Zum einen werden diese in Form von Nageln, Schrauben und Platten temporar implantiert, zum anderen wird jedoch auf dem Gebiet des Knochen und Gelenkersatzes eine dauerhafte, moglichst lebenslange Implantation angestrebt. Seit Einftihrung des rostfreien Stahles in die orthopadische Chirurgie sind die durch die temporare Implantation verursachten biologischen Probleme geringer geworden. Die M erfolge auf dem Gebiet des dauerhaften Knochen und Gelenkersatzes haben jedoch die Implantatforschung intensiviert und ftihrten so zur Verbesserung der bisher verwandten Implantate aus Metallen und Kunststoffen sowie zur Entwicklung neuer Im plan tationsmaterialien. Die erste zusammenfassende Darstellung der Grundlagen der Alloplastik mit Metallen und Kunststoffen wurde 1967 von Contzen, Straumann und Paschke publiziert. Sie weisen auf das Hauptproblem der als Knochen und Gelenkersatz verwandten Implantate hin, niimlich auf die unzureichende Fixation des Implantates an das angrenzende biologische Gewebe. Grundsatzlich sind heute 3 Arten der Verbindung ImplantatImplantatlager denkbar (Hench u. Mitarb. 1971). Dieses sind: 1. die mechanische Bindung, 2. die Bindung in Abhangigkeit von physikalischen Kraften und 3. die chemische Bindung. Die bis heute iibliche mechanische Verbindung ihrerseits kann durch 3 Methoden erreicht werden: 1. die indirekte Fixation des Implantates durch Schrauben und Nagel, 2. die Verankerung des Implantates durch die Verwendung von Polymethylmethacrylat (PMMA)und 3. die direkte Impaktion des Implantates in den Knochen.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.