A new foam abdominal wall model enhances resident confidence in performing ostomy and abdominal access procedures.

• Residents’ overall technical comfort improved by 2 points (p < 0.001).
• Confidence in siting the stoma increased by 1 point (p < 0.001), creating the trephine by 2 points (p < 0.001), and securing the stoma by 1 point (p < 0.001).

This low-cost tool allows safe, risk-free practice, enhancing surgical skills before touching real patients.

• Technical comfort with veress needle improved by 2 points (p < 0.001) and optical trocar by 1 point (p < 0.001).