An inexpensive foramen magnum decompression training tool: Feasibility and validation study.

Area of Science:

• Neurosurgery
• Medical Education
• Surgical Simulation

Background:

• Foramen magnum decompression (FMD) is a standard neurosurgical procedure for Chiari malformation.
• Effective surgical training is crucial for neurosurgical competence.
• Existing training models may lack accessibility or affordability.

Purpose of the Study:

• To develop and validate a low-cost, portable simulation model for foramen magnum decompression (FMD).
• To assess the feasibility and effectiveness of the model in training neurosurgery residents.
• To evaluate the model's face and content validity, and its impact on trainee confidence.

Main Methods:

• A mold-based method was employed to create a prototype FMD simulation model.
• Seventeen neurosurgery trainees participated in a training session using the model.
• Face and content validity were assessed using a Likert scale, and training benefit was measured with the Physician Performance Diagnostic Inventory Scale (PPDIS).

Main Results:

• High success rates were achieved: 87.5% for C1 arch removal, 81.3% for FMD performance, and 68.8% for avoiding injury.
• The model demonstrated high visual and tactile realism.
• Trainee confidence significantly improved, with median ratings increasing from early learner to competent levels.

Conclusions:

• The developed low-cost FMD simulation model is feasible, valid, and effective for surgical training.
• The portable and replicable nature of the model makes it a valuable educational tool.
• Simulation training with this model enhances neurosurgical trainees' skills and confidence in performing FMD.