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Related Experiment Video

Updated: Jun 14, 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

Experience with a large-frame, disposable external fixator.

David Seligson1, Lonnie Douglas

  • 1Department of Orthopedics, University of Louisville, Louisville, KY 40207, USA. seligson@louisville.edu

Orthopedics
|March 31, 2010
PubMed
Summary
This summary is machine-generated.

A new low-cost external fixator offers effective skeletal stabilization for lower-limb fractures and pelvis injuries. This lightweight, rigid device provides significant cost savings and good patient acceptance without complications.

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Last Updated: Jun 14, 2026

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A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
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Area of Science:

  • Orthopedic surgery
  • Trauma care
  • Biomedical engineering

Background:

  • External fixation is a critical temporizing measure for fractures.
  • Conventional external fixators can be costly and cumbersome.

Purpose of the Study:

  • To evaluate a newly designed, low-cost large-frame external fixator for acute lower-limb and pelvis injuries.
  • To assess the device's efficacy, cost-effectiveness, and patient acceptance.

Main Methods:

  • Thirty-eight newly designed external fixators were applied in a level I trauma center.
  • The fixators were used for initial skeletal stabilization in 75% of cases.
  • Device components, application, and patient outcomes were analyzed.

Main Results:

  • The fixators remained in place for a median of 8 days.
  • The device is lighter, equally rigid, and offers 20-25% cost savings compared to conventional fixators.
  • No pin tract infections, loss of fixation, or device disassembly occurred; patient acceptance was good.

Conclusions:

  • The new low-cost external fixator is a safe, effective, and cost-efficient option for acute fracture stabilization.
  • It presents a viable alternative to conventional external fixation with comparable rigidity and improved practicality.
  • The device demonstrates excellent patient tolerance and a favorable safety profile.