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Supramalleolar Osteotomies in Cavovarus Foot Deformity: Why Patient-Specific Instruments Make a Difference.

Arne Burssens1, Bernhard Devos Bevernage2, Kristian Buedts3

  • 1Department of Orthopaedics, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium.

Foot and Ankle Clinics
|October 20, 2023
PubMed
Summary

This study introduces 3D planning and patient-specific instruments for supramalleolar osteotomy, improving ankle varus deformity correction. This technique enhances surgical precision and patient outcomes for ankle alignment.

Keywords:
Cavovarus deformityHindfoot alignmentPatient-specific instrumentationSupramalleolar osteotomyWeight-bearing CT

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Area of Science:

  • Orthopedic surgery
  • Biomechanical engineering
  • Medical imaging

Background:

  • Supramalleolar osteotomy corrects ankle varus deformity, improving pain and function.
  • Current planning relies on 2D radiographs and free-hand techniques, posing challenges in precision.
  • Titrating surgical correction and technical demands remain significant hurdles.

Purpose of the Study:

  • To present 3D planning and patient-specific instrumentation for ankle varus correction.
  • To enhance the precision and reproducibility of supramalleolar osteotomy.
  • To address the limitations of traditional 2D planning and free-hand surgical execution.

Main Methods:

  • Utilizing 3-dimensional planning based on weight-bearing computed tomography (CT) images.
  • Employing patient-specific instruments (PSIs) for surgical guidance.
  • Applying these techniques to correct ankle varus deformities.

Main Results:

  • The study details a novel approach for precise correction of ankle varus deformities.
  • 3D planning and PSIs offer improved accuracy over traditional methods.
  • This methodology aims to overcome the challenges in titrating surgical correction.

Conclusions:

  • 3D planning and patient-specific instruments represent an advancement in correcting ankle varus deformities.
  • This technique enhances surgical precision and potentially improves long-term functional outcomes.
  • It offers a more accurate and reproducible alternative to conventional supramalleolar osteotomy planning and execution.