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Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
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Three-dimensional corrective osteotomy for cubitus varus deformity using patient-matched instruments.

Kunihiro Oka1, Satoshi Miyamura2, Ryoya Shiode2

  • 1Department of Orthopaedic Biomaterial Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.

JSES International
|May 6, 2024
PubMed
Summary

Three-dimensional (3D) corrective osteotomy using 3D simulations and patient-matched instruments effectively corrects cubitus varus deformity in pediatric and adolescent patients. This innovative approach enhances surgical accuracy and safety for cubitus varus deformity treatment.

Keywords:
Computer simulationCorrective osteotomyCubitus varus deformityPatient-matched instrumentSurgical guideThree-dimensional printing technology

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Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Medical imaging

Background:

  • Cubitus varus deformity correction methods, including 2D and 3D osteotomy, have been documented.
  • The necessity of 3D correction for cubitus varus deformity remains debated due to technical challenges and potential complications.

Purpose of the Study:

  • To introduce and evaluate the application of 3D simulations and patient-matched printing technology for corrective osteotomy in cubitus varus deformities.
  • To review recent advancements in utilizing these technologies for cubitus varus deformity correction.

Main Methods:

  • Quantified 3D deformity by comparing the affected limb's shape to the contralateral normal side.
  • Utilized patient-matched instruments, created from 3D simulations, to perform corrective osteotomy.
  • Evaluated surgical outcomes including humerus-elbow-wrist angle, tilting angle, and elbow range of motion in pediatric and adolescent patients.

Main Results:

  • Achieved significant correction of the humerus-elbow-wrist angle (pediatric: -21° to 14°; adolescent: -18° to 10°) and tilting angle (pediatric: 30° to 43°; adolescent: 20° to 40°).
  • Improved elbow range of motion (flexion/extension) in both pediatric (130°/140°, 20°/10°) and adolescent (120°/130°, 15°/0°) patients.

Conclusions:

  • 3D computer simulations and patient-matched instruments offer a reliable method for accurate and safe correction of cubitus varus deformity.
  • These technologies simplify complex 3D surgical procedures and aid in standardizing treatment protocols for cubitus varus deformity.