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Related Experiment Video

Updated: May 28, 2026

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
08:20

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

Published on: March 24, 2019

Femoral reconstruction using external fixation.

Yevgeniy Palatnik1, S Robert Rozbruch

  • 1Limb Lengthening and Deformity Service, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY 10065, USA.

Advances in Orthopedics
|October 13, 2011
PubMed
Summary

External fixators effectively treat femur problems like deformities and bone defects using distraction osteogenesis. This method significantly improves leg length discrepancy and limb alignment with minimal surgical impact.

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Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering

Background:

  • External fixators are versatile tools for orthopedic issues including congenital diseases, infections, and trauma.
  • Distraction osteogenesis using external fixation addresses diverse etiologies affecting bone length and alignment.

Purpose of the Study:

  • To evaluate the efficacy of external fixation for femoral reconstruction.
  • To analyze outcomes in patients undergoing lengthening, deformity correction, or nonunion/bone defect repair of the femur.

Main Methods:

  • Retrospective review of external fixation cases for femoral reconstruction.
  • Categorization into subgroups based on reconstruction goals: lengthening, deformity correction, nonunion/bone defect repair.
  • Evaluation of leg length discrepancy (LLD), limb alignment (MAD, LDFA), fixation time, and complications.

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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

Related Experiment Videos

Last Updated: May 28, 2026

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
08:20

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

Published on: March 24, 2019

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

Main Results:

  • Significant improvement in overall LLD and femoral length discrepancy.
  • Substantial enhancement in limb alignment, including mechanical axis deviation (MAD) and lateral distal femoral angle (LDFA).
  • Positive outcomes observed across all subgroups (lengthening, deformity correction, nonunion/bone defect repair).

Conclusions:

  • The Ilizarov external fixator is a valuable technique for femoral reconstruction.
  • Benefits include reduced surgical exposure, preserved blood supply, and avoidance of bone grafting/internal fixation.
  • Enables simultaneous limb lengthening and deformity correction, enhancing functional and aesthetic outcomes.