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PRE-PLANNING ANKLE ARTHRODESIS USING 3D RECONSTRUCTED TOMOGRAPHIES.

Rodrigo Schroll Astolfi1, Marcio DE Paiva Bezerra Carrah2, Guilherme Farias Cordeiro2

  • 1Universidade Federal do Ceará, Fortaleza, CE, Brazil.

Acta Ortopedica Brasileira
|May 20, 2020
PubMed
Summary

This study presents a novel method for precise ankle arthrodesis using 3D reconstructions of ankle bone contours. The developed technique provides specific screw placement guidelines for improved surgical outcomes.

Keywords:
3D-ReconstructionAnkleArthrodesisFootJoint DiseasesPre-Planning

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Area of Science:

  • Orthopedic Surgery
  • Medical Imaging
  • Biomechanical Engineering

Background:

  • Ankle arthrodesis is a surgical procedure to fuse the ankle joint.
  • Precise screw placement is crucial for successful ankle fusion.
  • Existing methods may lack population-based anatomical detail.

Purpose of the Study:

  • To develop and validate a 3D analysis method for ankle bone contours.
  • To establish precise guidelines for screw placement in ankle arthrodesis.
  • To enhance surgical accuracy and outcomes in ankle fusion procedures.

Main Methods:

  • Twenty ankle tomographies underwent 3D reconstruction.
  • Seven key anatomical points were marked for screw guidance.
  • A median ankle model was constructed from population data to determine screw parameters.

Main Results:

  • Two median ankle models (left and right) were generated.
  • Specific entry points, depths, and inclinations for three screws were defined.
  • Detailed measurements for screw placement in the right ankle were provided.

Conclusions:

  • This study introduces the first population-based precise guide for ankle arthrodesis.
  • The method offers a novel approach to improve surgical accuracy.
  • Evidence level II, Diagnostic Studies.