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Simulation with 3D Neuronavigation for Learning Cortical Bone Trajectory Screw Placement.

Juan Delgado-Fernández1, Natalia Frade-Porto2, Guillermo Blasco2

  • 1Division of Neurosurgery University Hospital 12 de Octubre, Madrid, Spain.

Journal of Neurological Surgery. Part A, Central European Neurosurgery
|December 1, 2020
PubMed
Summary
This summary is machine-generated.

This study developed a novel simulator for cortical bone trajectory (CBT) screw placement, enhancing surgical training. The CBT simulator significantly improved trainee skills and understanding, paving the way for reduced complications in neurosurgery.

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Area of Science:

  • Neurosurgery
  • Surgical Simulation
  • Medical Education

Background:

  • Neurosurgical technique acquisition presents significant challenges for trainees.
  • Simulation and simulators are increasingly recognized as valuable teaching tools in medicine.

Purpose of the Study:

  • To propose and evaluate a novel simulator for cortical bone trajectory (CBT) screw placement.
  • To enhance surgical outcomes and minimize complications associated with CBT screw insertion.

Main Methods:

  • A simulation platform was developed using a sawbone and 3D fluoroscope for CBT technique familiarization.
  • Participants' skills were assessed using Objective Structured Assessment of Technical Skills (OSATS) and Physician Performance Diagnostic Inventory Scale (PPDI) before and after simulation.
  • A retrospective review of patients operated on using the CBT technique post-implementation was conducted.

Main Results:

  • During simulation, 4 out of 24 screws (16.6%) resulted in pedicle breach.
  • Post-simulation, participants showed significant improvements in OSATS and PPDI scores (p=0.039 and p=0.042).
  • Retrospective patient data showed improved Oswestry Disability Index (ODI) scores (preoperative 58.5 vs. postoperative 31; p=0.028) with one intraoperative dural tear and minimal long-term complications.

Conclusions:

  • The developed CBT screw placement simulator is effective for implementing the technique in a clinical setting.
  • Both trainees and consultants reported positive learning experiences and improved understanding of surgical anatomy.
  • The study suggests that simulation can facilitate CBT technique learning and potentially reduce surgical complications.