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Related Concept Videos

Fractures: Bone Repair01:27

Fractures: Bone Repair

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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
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TAPE: A Biodegradable Hemostatic Glue Inspired by a Ubiquitous Compound in Plants for Surgical Application
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Gluing Living Bone Using a Biomimetic Bioadhesive: From Initial Cut to Final Healing.

Philip Procter1,2, Gry Hulsart-Billström3, Antoine Alves4

  • 1Department of Engineering Sciences, Division of Applied Material Science, Uppsala University, Uppsala, Sweden.

Frontiers in Bioengineering and Biotechnology
|November 25, 2021
PubMed
Summary

A novel bone bioadhesive, OsStic, shows promise for improving osteoporotic fracture fixation. In vivo studies demonstrated OsStic integrates with bone, facilitating healing and replacement by new bone tissue without adverse effects.

Keywords:
biomechanical modelbiomimeticbone adhesivecalcium phosphate cement (CPC)fracture healingorthobiologicphosphoserine

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Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Regenerative Medicine

Background:

  • Osteoporotic fractures pose a significant global health challenge, leading to high reoperation rates.
  • Current fixation methods for osteoporotic bone often have limitations.
  • Novel biomaterials are needed to enhance bone fracture repair and stability.

Purpose of the Study:

  • To evaluate the in vivo strength and biocompatibility of a new bone bioadhesive, OsStic.
  • To assess the integration and replacement of OsStic by host bone tissue over time.
  • To determine the potential of OsStic in addressing unmet clinical needs in osteoporotic fracture fixation.

Main Methods:

  • A murine model was used to test OsStic in a bone core assay over 42 days.
  • Mean peak pull-out force was measured at multiple time points (0-28 days).
  • Histology and micro-computed tomography (micro-CT) were performed for tissue analysis.

Main Results:

  • OsStic provided immediate bone core fixation, with initial pull-out forces comparable to controls.
  • Pull-out strength showed a transient decrease followed by recovery, indicating integration rather than failure.
  • Histological and micro-CT analyses confirmed OsStic was gradually replaced by vascularized, high-quality bone tissue without resorption or ectopic bone formation.

Conclusions:

  • OsStic acts as a scaffold, allowing bone healing and replacement by native bone tissue.
  • The bioadhesive does not impede the natural bone healing process.
  • OsStic demonstrates potential for clinical application in treating osteoporotic bone fractures and osteochondral defects.