Topic Explanation:

The forum discussion revolves around finding the best flange to prevent leaks for individuals with a large hernia behind their stoma. The presence of a hernia can complicate the fit and effectiveness of ostomy appliances, leading to leakage issues.

Advice and Insights:

1. Convex Flanges:
- Convex flanges are recommended as they can help manage leaks caused by hernias. They are designed to apply gentle pressure around the stoma, which can help the stoma protrude and reduce leaks.

2. DIY Baseplates:
- Some users have created custom baseplates to fit their body shape better. These are secured with prosthetic glue and belts, which have reportedly resolved leakage issues for some individuals.

3. Product Recommendations:
- Coloplast "SenSura Mio Convex Flip" is suggested for its ease of use and effective adhesion. It is available in both one-piece and two-piece systems.
- Convatec ActiveLife hard convex pouch is recommended for its hard convexity, which helps the stoma protrude and prevents it from sinking back, reducing leaks.

4. Hernia Management:
- Addressing the hernia surgically is advised, as hernias can grow larger over time. Post-surgery, caution is advised to avoid lifting heavy objects to prevent recurrence.

5. Adhesion Tips:
- The bag or sleeve can adhere directly to a custom baseplate made from PVC, which provides a strong adhesion without additional glue. Probond prosthetic glue is used to attach the baseplate to the skin.