Biodegradation of polyglycolic acid in bone tissue: An experimental study on rabbits
✍ Scribed by S. Vainionpää
- Publisher
- Springer
- Year
- 1986
- Tongue
- English
- Weight
- 695 KB
- Volume
- 104
- Category
- Article
- ISSN
- 1434-3916
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✦ Synopsis
The biodegradation of polyglycolic acid (PGA) was investigated in cortical bone of 21 rabbits and in cancellous bone of 15 rabbits The follow-up times were 3, 6, and 12 weeks Radiographical, histological, microradiographical, and oxytetracycline labeling studies were done PGA was biocompatible and was degraded to a great extent in the cancellous bone and partly in the cortical bone in 12 weeks without any sign of inflammation or foreign body reaction The biodegradation of PGA started peripherally in the area of the implant and continued with subsequent replacement by new bone.
Zusammenfassung
Der biologische Abbau von Polyglykolsaure (PGA) wurde im kortikalen Knochen von 21 Kaninchen sowie in der Spongiosa von 15 Kaninchen untersucht Die Beobachtungszeit betrug drei, sechs und zw 6 lf Wochen Die Studie erfolgte radiographisch, histologisch, microradiographisch und mit OTC-Markierung PGA erwies sich als biologisch vertriglich und wurde innerhalb von 12 Wochen ohne Anzeichen von Entziindung oder Fremdk 6 rperreaktion in der Spongiosa fast vollstindig und in der Kortikalis teilweise abgebaut Der biologische Abbau von PGA begann in der Randzone des Implantates und fand unter gleichzeitigem Ersatz durch neugebildeten Knochen statt.
Polyglycolic acid (PGA) has been known since 1954 l 7, 10 l It is a fiber-forming polymer, but because of its hydrolytic instability it was not until 1962 that PGA was developed by the American Cyanamid Co.
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## Abstract The purpose of this study was to investigate, qualitatively and histoquantitatively, the tissue response of rabbit femur cancellous bone to polyglycolide (PGA), polydioxanone (PDS), polylevolactide (PLLA), and stainless steel pins under identical conditions. Eighty knees in 50 rabbits w