Chondroconductive potential of tantalum trabecular metal

Wanda J. Gordon, Michael G. Conzemius, Elizabeth Birdsall, Yvonne Wannemuehler, Surya Mallapragada, David G. Lewallen, Michael J. Yaszemski, Shawn W.D. O'Driscoll

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Mesenchymal stem cells or chondrocytes have been implanted into joints in biodegradable matrices in order to improve the quality of healing cartilage defects; however, insufficient biomechanical strength of the construct at implantation is a limiting factor for clinical application. Logically, a construct with better biomechanical characteristics would provide better results. Tantalum trabecular metal (TTM) is osteoconductive and mechanically similar to subchondral bone. The objective of this pilot study was to determine if TTM is also chondroconductive. Small sections of TTM were cultured with emu and canine chondrocytes in static and dynamic culture environments. The sections cultured in dynamic bioreactors were diffusely covered with a cartilaginous matrix. Sections cultured in static conditions had no growth. Histologic evaluation from emu and canine dynamic cultures showed tissue that was heavily populated with mesenchymal cells that resembled chondrocytes, and glycosaminoglycan staining that was distributed throughout the matrix. Type II collagen content in the canine dynamic culture was 84% by SDS-PAGE. Tantalum trabecular metal is chondroconductive in vitro in a dynamic environment when cultured with adult canine or emu chondrocytes. This technology could be expanded to determine if cartilaginous-metallic constructs may be used for joint resurfacing of osteoarthritic joints.

Original languageEnglish (US)
Pages (from-to)229-233
Number of pages5
JournalJournal of Biomedical Materials Research - Part B Applied Biomaterials
Volume75
Issue number2
DOIs
StatePublished - Nov 1 2005

Keywords

  • Articular cartilage
  • Collagen
  • Scaffolds
  • Tissue engineering

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Chondroconductive potential of tantalum trabecular metal'. Together they form a unique fingerprint.

  • Cite this

    Gordon, W. J., Conzemius, M. G., Birdsall, E., Wannemuehler, Y., Mallapragada, S., Lewallen, D. G., Yaszemski, M. J., & O'Driscoll, S. W. D. (2005). Chondroconductive potential of tantalum trabecular metal. Journal of Biomedical Materials Research - Part B Applied Biomaterials, 75(2), 229-233. https://doi.org/10.1002/jbm.b.30242