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Bone tumor resection: analysis about 3D preoperative planning and navigation method using a virtual specimen.

Lucas E Ritacco¹, Federico E Milano, German L Farfalli

¹Department of Medical Informatics, Virtual Planning and Navigation Unit, Hospital Italiano de Buenos Aires, Argentina.

Studies in Health Technology and Informatics

|August 8, 2013

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This study introduces a method to assess the accuracy of 3D preoperative planning and navigation for bone tumor resections. Comparing 3D models of surgical specimens to planned cuts, the technique validates surgical navigation accuracy.

Area of Science:

Orthopedic Oncology
Surgical Navigation
3D Imaging

Background:

Three-dimensional (3D) preoperative planning and navigation-guided bone tumor resection have gained popularity.
Direct evidence of the accuracy of these methods is currently lacking.

Purpose of the Study:

To describe and validate a method for determining the accuracy of navigation-guided osteotomies in bone tumor resection.
To assess the accuracy of virtual planning and navigation using 3D reconstruction of surgical specimens.

Main Methods:

Evaluation of 14 osteotomies across seven patients undergoing tumor resection.
Postoperative 3D reconstruction of surgical specimens using CT imaging.
Quantitative comparison between planned osteotomies and those achieved in the resected specimen.

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Main Results:

The mean quantitative difference between planned and achieved osteotomies was 1.56 mm (SD: 2.91).
This demonstrates a high degree of accuracy in the performed osteotomies.

Conclusions:

A 3D model derived from the tumor surgical specimen is a valuable tool for assessing accuracy.
This method validates the precision of 3D preoperative planning and surgical navigation in bone tumor resections.