Comparison of a 3D-printed skin model with established methods for teaching punch biopsy with suturing
Sandra Schuh1,2,3, Stefan Schiele4, Anna Rubeck4
1Department of Dermatology and Allergology, University Hospital Augsburg, Augsburg, Germany.
Background:
Realistic and accessible models are essential for training physicians in clinical procedures. This study investigated whether a cost-effective 3D-printed skin model is superior to fruit and foam models for teaching skin biopsies.
Patients And Methods:
The study (10/2023-02/2025) involved 148 medical students who compared the 3D skin model, made of soft silicone, shore hardness 10-A, with fruit and foam for punch biopsy training. Previous cohorts used only fruit and foam. 28 physicians assessed realism of the 3D model versus real skin. Practical skills were evaluated in Objective Structured Clinical Examinations (OSCEs), and feedback from students and physicians was collected via standardized questionnaires. Economic and ecological impacts were analyzed.
Results:
Students rated the 3D skin model significantly higher for realism and training suitability than fruit and foam (p < 0.001). OSCE scores indicated comparable skill acquisition (p = 0.2005). Physicians found the 3D model more anatomically and haptically realistic than foam and fruit (each p < 0.001).
Conclusions:
The 3D-printed skin model is a superior, cost-effective training tool that overcomes limitations of traditional models, improves confidence, and enhances skill acquisition. Although production is resource-intensive, its reusability and low-cost materials make it sustainable. Anatomical realism fosters interest in dermatology, making it a promising innovation in medical education.
