A novel biomimetic polymer scaffold design enhances bone ingrowth.

TitleA novel biomimetic polymer scaffold design enhances bone ingrowth.
Publication TypeJournal Article
Year of Publication2009
AuthorsGeffre CP, Margolis DS, Ruth JT, DeYoung DW, Tellis BC, Szivek JA
JournalJ Biomed Mater Res A
Date Published2009 Dec
KeywordsAnimals, Biocompatible Materials, Biomimetics, Bone and Bones, Bone Substitutes, Osteoblasts, Osteogenesis, Phenotype, Polyesters, Polymers, Porosity, Time Factors, Tissue Engineering, Tissue Scaffolds, Tomography, X-Ray Computed

There has been recent interest in treating large bone defects with polymer scaffolds because current modalities such as autographs and allographs have limitations. Additionally, polymer scaffolds are utilized in tissue engineering applications to implant and anchor tissues in place, promoting integration with surrounding native tissue. In both applications, rapid and increased bone growth is crucial to the success of the implant. Recent studies have shown that mimicking native bone tissue morphology leads to increased osteoblastic phenotype and more rapid mineralization. The purpose of this study was to compare bone ingrowth into polymer scaffolds created with a biomimetic porous architecture to those with a simple porous design. The biomimetic architecture was designed from the inverse structure of native trabecular bone and manufactured using solid free form fabrication. Histology and muCT analysis demonstrated a 500-600% increase in bone growth into and adjacent to the biomimetic scaffold at five months post-op. This is in agreement with previous studies in which biomimetic approaches accelerated bone formation. It also supports the applicability of polymer scaffolds for the treatment of large tissue defects when implanting tissue-engineering constructs. (c) 2008 Wiley Periodicals, Inc. J Biomed Mater Res, 2009.

Alternate JournalJ Biomed Mater Res A
PubMed ID19051300
PubMed Central IDPMC2767470
Grant ListR01 EB000660 / EB / NIBIB NIH HHS / United States
R01 EB000660-04 / EB / NIBIB NIH HHS / United States
R01-EB000660 / EB / NIBIB NIH HHS / United States