Comparing cadaveric and 3D‐printed laryngeal models in transcutaneous injection laryngoplasty

Abstract

Abstract Background There is increasing focus on the development of high‐quality simulation models for medical education. Cadaveric models, although considered more realistic, may be difficult to obtain and costly. The advent of three‐dimensional (3D) printing has offered a low‐cost, reliable, and reproducible alternative. This study sought to compare the utility of 3D‐printed to cadaveric models for training in transcutaneous injection laryngoplasty (TIL). Methods A simulation course with a cross‐over design was employed. Video laryngoscopes were utilized for both the 3D and cadaveric models to assess the accuracy of injection into the vocal fold. Pre‐procedure and post‐procedure surveys were administered to evaluate understanding and comfort level on a Likert scale of 1–10. Each model was also rated on a 1–5 Likert scale for self‐efficacy, fidelity, and educational value. Results Pre‐ and post‐survey data were completed by 15 otolaryngology residents and medical students. Mean pre‐seminar understanding and comfort level were 3.7 and 2.2, respectively, compared to 6.9 and 5.9 (p < .05) following use of the 3D model and 6.4 and 4.7 (p < .05) following use of the cadaver model. When comparing 3D and cadaveric models, no significant differences were observed regarding self‐efficacy, fidelity, and educational value. Conclusion There was a similar mean increase in understanding and comfort following use of the 3D and cadaveric models. 3D‐printing can provide an excellent adjunct to, and eventually a potential replacement for hands‐on cadaveric training in medical education, particularly for TIL. Level of Evidence Level III.

Keywords

• laryngology
• medical education < comprehensive otolaryngology
• resident education < comprehensive otolaryngology
• vocal fold paralysis/paresis/motion impairment < laryngology