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Zusammenfassung

Artikulärer Knorpel ist ein avaskuläres, alymphatisches und anisotropes Gewebe. Knorpelgewebe ist nicht innerviert und besitzt keine Basalmembran [24]. Es besteht zum überwiegenden Teil aus extrazellulärer Matrix (EZM), welche von den Knorpelzellen (Chondrozyten) gebildet wird. Die Nährstoffversorgung erfolgt durch Diffusion. Der differenzierte Chondrozytenmetabolismus gewährleistet die Produktion des regulären Spektrums an Matrixmolekülen und deren Integration in die EZM durch ein Gleichgewicht zwischen anabolen und katabolen Stoffwechselprozessen. Im Knorpel des Erwachsenen sind nur ca. 5% des Gewebevolumens von Chondrozyten eingenommen, der Rest ist EZM. Die mechanischen Eigenschaften des Gelenkknorpels resultieren aus der Zusammensetzung der EZM, welche als molekulares Netzwerk einer Vielzahl von Makromolekülen angesehen werden kann. Die Hauptbestandteile der EZM sind Wasser (65–80% des Feuchtgewichtes), Kollagene (10–30% des Feuchtgewichtes) und Proteoglykane (5–10% des Feuchtgewichtes).

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Mollenhauer, J., Aurich, M. (2003). Grundlegendes zum Gelenkknorpel. In: Fritz, J., Aicher, W.K., Eichhorn, HJ. (eds) Praxisleitfaden der Knorpelreparatur. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55521-3_1

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  • DOI: https://doi.org/10.1007/978-3-642-55521-3_1

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