title: Novel approaches to bone grafting: porosity, bone morphogenetic proteins, stem cells, and the periosteum.
abstract: The disadvantages involving the use of a patient's own bone as graft material have led surgeons to search for alternative materials. In this review, several characteristics of a successful bone graft material are discussed. In addition, novel synthetic materials and natural bone graft materials are being considered. Various factors can determine the success of a bone graft substitute. For example, design considerations such as porosity, pore shape, and interconnection play significant roles in determining graft performance. The effective delivery of bone morphogenetic proteins and the ability to restore vascularization also play significant roles in determining the success of a bone graft material. Among current approaches, shorter bone morphogenetic protein sequences, more efficient delivery methods, and periosteal graft supplements have shown significant promise for use in autograft substitutes or autograft extenders.
authors.affiliation: Joint Department of Biomedical Engineering, University of North Carolina, Raleigh, NC, USA. pepetroc@email.unc.edu
authors.forename: Peter
authors.initials: P
authors.lastname: Petrochenko
authors.forename: Roger J
authors.initials: RJ
authors.lastname: Narayan
mesh_terms: D019485:Bone Morphogenetic Proteins / Q000008:administration & dosage / Q000627:therapeutic use; D018786:Bone Substitutes / Q000627:therapeutic use; D016025:Bone Transplantation / Q000379:methods*; D001842:Bone and Bones / Q000502:physiology*; D016503:Drug Delivery Systems; D006801:Humans; D010521:Periosteum; D016062:Porosity; D013234:Stem Cells; D014184:Transplantation, Homologous
chemical_list: D019485:Bone Morphogenetic Proteins; D018786:Bone Substitutes