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A Dangerous Region Generation Method for Computer-Assisted Pelvic Bone Tumor Resection Surgery: A Retrospective Study
Daming Pang1, Zhuoyu Li1, Yang Sun1
1Department of Orthopaedic Oncology, Affiliated Beijing Jishuitan Hospital, Capital Medical University, Beijing 100035, China.
Journal of Clinical Medicine
|February 13, 2026
Summary
A new 3D navigation method enhances surgical precision for pelvic bone tumors, improving margin accuracy and patient outcomes. This computer-assisted technique shows promise for oncological safety and functional recovery in complex resections.
Area of Science:
- Orthopedic Oncology
- Surgical Navigation
- Medical Imaging
Background:
- Pelvic bone tumor resection is challenging due to difficulties in achieving adequate surgical margins.
- Conventional navigation lacks direct 3D margin feedback, increasing oncological risks.
- An innovative dangerous region generation method using 3D image resampling and anisotropic distance transform was developed.
Purpose of the Study:
- To evaluate the oncological safety of a novel dangerous region generation method integrated with computer-assisted navigation for pelvic tumor surgery.
- To assess functional outcomes and perioperative efficacy in patients undergoing pelvic bone tumor resection using this advanced technique.
- To determine the feasibility and clinical benefits of computer-assisted pelvic tumor resection with enhanced margin visualization.
Main Methods:
- A cohort of 19 patients with primary pelvic bone tumors underwent surgery between May 2018 and June 2024.
- The study included diverse tumor types such as chondrosarcoma, giant cell tumor, osteosarcoma, chordoma, and Ewing sarcoma.
- Feasibility was assessed through general, oncological, and functional outcomes, analyzing operative time, blood loss, hospital stay, and survival rates.
Main Results:
- All surgeries were successful, with adequate surgical margins achieved in every case.
- The 5-year overall survival rate was 75.6%, reaching 80.0% for wide-margin resections.
- Limb-salvage patients demonstrated excellent functional recovery (88.5% MSTS score), with most regaining normal ambulation.
Conclusions:
- The dangerous region generation method, combined with computer-assisted navigation, is a feasible approach for pelvic bone tumor resection.
- This technique significantly enhances surgical margin accuracy, contributing to favorable oncological and functional outcomes.
- The study supports the clinical utility of this innovative navigation system for improving patient results in complex pelvic surgeries.
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