Mesenchymal stem cells and platelet lysate in fibrin or collagen scaffold promote non-cemented hip prosthesis integration

Barbara Dozza, Claudia Di Bella, Enrico Lucarelli, Gianluca Giavaresi, Milena Fini, Pier Luigi Tazzari, Sandro Giannini, Davide Donati

Research output: Contribution to journalArticle

Abstract

The objective of this study was to evaluate whether mesenchymal stem cells (MSC) and platelet lysate (PL) seeded in a fibrin or collagen scaffold could improve the new bone (NB) formation around an uncemented hip prosthesis stem in a sheep model. In vitro expanded MSC were suspended in PL and either mixed with collagen or fibrin gel as delivery vehicle. The cell-gel composites were inserted inside the femoral canal, then the prosthesis was press-fit inserted inside the femur. Identical procedures were performed in a control group, but only the prosthesis was implanted. Histomorphometrical analysis performed 4 months after surgery indicated that the newly formed bone inside the medullary canal, between the inner cortex and the prosthetic stem, was significantly higher in the MSC-PL-collagen group (mean 18.7 ± 4.5%) and in the MSC-PL-fibrin group (mean 18.8 ± 15.2%) when compared to the control group (mean 4.6 ± 2.0%). There was a significantly higher bone-prosthesis contact in the MSC-PL-collagen group (mean 2.7 ± 2.6%) and in the MSC-PL-fibrin group (mean 2.3 ± 3.1%) compared to the control group (mean 0.2 ± 0.1%). The results indicate that MSC and PL in a fibrin or collagen scaffold can promote NB formation around an uncemented hip prosthesis stem.

Original languageEnglish
Pages (from-to)961-968
Number of pages8
JournalJournal of Orthopaedic Research
Volume29
Issue number6
DOIs
Publication statusPublished - Jun 2011

Keywords

  • collagen
  • fibrin
  • hip prosthesis
  • mesenchymal stem cells
  • platelet lysate

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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