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Bone substitutes in orthopaedic surgery: from basic science to clinical practice.

V Campana1, G Milano, E Pagano

  • 1Department of Orthopaedics and Traumatology, Università Cattolica del Sacro Cuore, L.go F. Vito 1, 00168, Rome, Italy.

Journal of Materials Science. Materials in Medicine
|May 29, 2014
PubMed
Summary
This summary is machine-generated.

Bone grafting procedures utilize various substitutes like autografts, allografts, xenografts, and synthetics. Emerging cell-based therapies, particularly using mesenchymal stem cells, show promise for bone regeneration.

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Area of Science:

  • Orthopedics and Regenerative Medicine
  • Biomaterials Science
  • Surgical Innovation

Background:

  • Over two million bone grafting procedures occur globally each year.
  • Autografts are the gold standard but have limitations in availability and donor site morbidity.
  • Allografts, xenografts, and synthetic bone substitutes (like hydroxyapatite) are alternatives with varying efficacy and risks.

Purpose of the Study:

  • To review current bone fusion techniques and alternative bone substitutes.
  • To update on advancements in experimental research for bone regeneration.
  • To highlight emerging cell-based strategies for orthopedic applications.

Main Methods:

  • Review of existing literature on bone grafting materials and techniques.
  • Analysis of clinical outcomes and limitations of current bone substitutes.
  • Exploration of experimental approaches, including cell-based therapies and growth factors.

Main Results:

  • While autografts are ideal, their limitations drive the use of alternatives.
  • Synthetic bone substitutes, including biomimetic hydroxyapatites and injectable cements, are effective.
  • Bone morphogenetic proteins show promise, but demineralized bone matrix and platelet-rich plasma have controversial efficacy.
  • Mesenchymal stem cells are a key focus in experimental cell-based bone regeneration strategies.

Conclusions:

  • A range of bone substitutes exist, each with distinct advantages and disadvantages.
  • Biomimetic materials and injectable cements represent advancements in synthetic bone substitutes.
  • Cell-based therapies, especially using mesenchymal stem cells, are the most promising future direction for bone regeneration.