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Related Experiment Video

Updated: Sep 14, 2025

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
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External Fixator Pin Placement in the Lower Extremity Without Fluoroscopy.

Lauren Luther1, Ridge Maxson, Stephen D Bigach

  • 1From the Department of Orthopaedic Surgery, Vanderbilt University Medical Center, Nashville, TN.

The Journal of the American Academy of Orthopaedic Surgeons
|July 21, 2025
PubMed
Summary
This summary is machine-generated.

A standardized technique for placing external fixation pins in the lower extremity without image guidance achieved a 98% success rate. This method is safe and reproducible for surgeons lacking fluoroscopy.

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Area of Science:

  • Orthopedic Surgery
  • Trauma Care
  • Musculoskeletal Injury Management

Background:

  • External fixation is crucial for managing musculoskeletal injuries.
  • Lack of standardized techniques for pin placement without image guidance.
  • Need for reliable methods to ensure appropriate pin depth.

Purpose of the Study:

  • To validate a standardized technique for placing external fixation pins in the lower extremity without fluoroscopy.
  • To assess the safety and reproducibility of the technique across different surgeon experience levels.

Main Methods:

  • Prospective enrollment of adult patients undergoing lower extremity external fixation.
  • Standardized pin placement technique used by attendings and trainees (PGY2-PGY6).
  • Complications classified as major, potential major, or minor; success defined by absence of major/potential major complications.

Main Results:

  • 97.3% of constructs (36/37) and 98.0% of pins (99/101) were placed successfully.
  • No major complications were observed; only minor complications (pin tract infections, shallow overpenetration) occurred.
  • 96% of pins were placed bicortically without overpenetration; overpenetration decreased with surgeon experience.

Conclusions:

  • The standardized technique for non-image-guided external fixation pin placement is highly successful (98% pin, 97% construct success).
  • This technique is safe, reproducible, and suitable for surgeons of varying skill levels.
  • It provides a viable solution for external fixation in settings lacking fluoroscopic capabilities.