Stem cell- and growth factor-based regenerative therapies for avascular necrosis of the femoral head

Stem Cell Res Ther. 2012 Feb 22;3(1):7. doi: 10.1186/scrt98.

Abstract

Avascular necrosis (AVN) of the femoral head is a debilitating disease of multifactorial genesis, predominately affects young patients, and often leads to the development of secondary osteoarthritis. The evolving field of regenerative medicine offers promising treatment strategies using cells, biomaterial scaffolds, and bioactive factors, which might improve clinical outcome. Early stages of AVN with preserved structural integrity of the subchondral plate are accessible to retrograde surgical procedures, such as core decompression to reduce the intraosseous pressure and to induce bone remodeling. The additive application of concentrated bone marrow aspirates, ex vivo expanded mesenchymal stem cells, and osteogenic or angiogenic growth factors (or both) holds great potential to improve bone regeneration. In contrast, advanced stages of AVN with collapsed subchondral bone require an osteochondral reconstruction to preserve the physiological joint function. Analogously to strategies for osteochondral reconstruction in the knee, anterograde surgical techniques, such as osteochondral transplantation (mosaicplasty), matrix-based autologous chondrocyte implantation, or the use of acellular scaffolds alone, might preserve joint function and reduce the need for hip replacement. This review summarizes recent experimental accomplishments and initial clinical findings in the field of regenerative medicine which apply cells, growth factors, and matrices to address the clinical problem of AVN.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Bone Morphogenetic Proteins / therapeutic use
  • Femur Head Necrosis / therapy*
  • Granulocyte Colony-Stimulating Factor / therapeutic use
  • Hepatocyte Growth Factor / therapeutic use
  • Humans
  • Intercellular Signaling Peptides and Proteins / therapeutic use*
  • Mesenchymal Stem Cell Transplantation
  • Mesenchymal Stem Cells / cytology*
  • Regenerative Medicine
  • Stem Cell Factor / therapeutic use
  • Vascular Endothelial Growth Factor A / therapeutic use

Substances

  • Bone Morphogenetic Proteins
  • Intercellular Signaling Peptides and Proteins
  • Stem Cell Factor
  • Vascular Endothelial Growth Factor A
  • Granulocyte Colony-Stimulating Factor
  • Hepatocyte Growth Factor