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Related Experiment Video

Updated: Jun 18, 2026

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
10:09

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Published on: October 9, 2014

Internal fixator for use in the mouse.

Romano Matthys1, Stephan M Perren

  • 1AO Development, Davos, Switzerland. romano.matthys@aofoundation.org

Injury
|November 10, 2009
PubMed
Summary
This summary is machine-generated.

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New miniaturized internal fixation technology aids bone repair research in mice. This low-mass implant allows controlled stability for studying fracture healing and enables animal ambulation.

Area of Science:

  • Biomedical Engineering
  • Orthopedic Research
  • Surgical Technology

Background:

  • Bone repair studies, particularly using knockout mice, require specialized technologies.
  • Mechano-biological reactions are critical for fracture healing, necessitating controlled stability.
  • Conventional internal fixation methods can impede animal mobility and cause excessive loading.

Purpose of the Study:

  • To develop a miniaturized internal fixation device for use in small animal models.
  • To enable controlled mechanical stability for studying bone healing processes.
  • To facilitate free ambulation in research animals undergoing fracture repair studies.

Main Methods:

  • Development of a plate-like internal fixator with locked screws, adaptable for compression or splinting fixation.

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In Vivo Evaluation of Fracture Callus Development During Bone Healing in Mice Using an MRI-compatible Osteosynthesis Device for the Mouse Femur
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In Vivo Evaluation of Fracture Callus Development During Bone Healing in Mice Using an MRI-compatible Osteosynthesis Device for the Mouse Femur

Published on: November 14, 2017

Related Experiment Videos

Last Updated: Jun 18, 2026

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
10:09

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Published on: October 9, 2014

Acrylic Resin Molding Based Head Fixation Technique in Rodents
07:51

Acrylic Resin Molding Based Head Fixation Technique in Rodents

Published on: January 12, 2016

In Vivo Evaluation of Fracture Callus Development During Bone Healing in Mice Using an MRI-compatible Osteosynthesis Device for the Mouse Femur
07:33

In Vivo Evaluation of Fracture Callus Development During Bone Healing in Mice Using an MRI-compatible Osteosynthesis Device for the Mouse Femur

Published on: November 14, 2017

  • Utilized a guide for standardized application of the fixator, screws, and osteotomy.
  • The locking mechanism allows the fixator to be elevated from the bone surface, minimizing periosteal blood supply damage.

    • Main Results:

    • A miniaturized internal fixation system has been successfully developed and implemented.
    • The technology allows for selectable levels of flexibility in fixation.
    • Minimal contact damage to the periosteal blood supply is anticipated due to the elevated fixator design.

    Conclusions:

    • The developed technology provides a valuable tool for advancing bone repair research in small animal models.
    • This miniaturized fixation system supports controlled mechanical environments essential for studying fracture healing.
    • The system's design promotes reduced iatrogenic damage and improved animal welfare during research.