Incidence of Perineal Hernia After ELAPE with Biological Mesh in Advanced Rectal Cancer

Overview

This study evaluated 35 patients undergoing pelvic floor reconstruction with biological mesh following extralevator abdominoperineal excision (ELAPE), pelvic exenteration (PE), or distal sacral resection (SR) for locally advanced rectal cancer. The use of biological mesh combined with omentoplasty showed promising results in reducing perineal hernia rates and improving wound healing outcomes.

Background

Abdominoperineal excision (APE) is a standard surgical approach for low rectal cancers, with ELAPE involving en bloc resection of the levator ani muscle, resulting in larger pelvic floor defects. Advanced tumors may require more extensive resections such as pelvic exenteration or distal sacral resection, creating significant pelvic floor defects that complicate wound healing. Primary closure of these defects is associated with high wound complication rates, especially after neoadjuvant radiotherapy. Biological mesh reconstruction has emerged as a promising alternative, potentially lowering perineal hernia incidence and improving healing compared to primary closure or flap reconstructions.

Data Highlights

Key Findings

• All patients underwent pelvic floor reconstruction using a Permacol™ biological mesh combined with omentoplasty.
• Perineal herniation rates after biological mesh reconstruction ranged from 0–13% in literature, with this study focusing on similar outcomes.
• Lotus petal flap reconstructions were used in 25.7% of patients, either immediately or secondarily, to fill dead space and prevent fluid accumulation.
• Primary closure is associated with high wound complication rates (40–45%) especially after neoadjuvant radiotherapy, whereas biological mesh reconstruction shows improved healing and lower hernia rates.
• Gluteal flap reconstructions have higher perineal hernia rates compared to biological mesh (21% vs 0%, p < 0.01).
• Complications were graded by Clavien-Dindo classification; treatment options included conservative management, antibiotics, VAC therapy, surgical re-intervention, or secondary flap reconstruction.

Clinical Implications

Biological mesh reconstruction combined with omentoplasty offers a viable technique to reduce perineal hernia incidence and improve wound healing in patients undergoing extensive pelvic resections for rectal cancer. This approach may shorten operation time and facilitate earlier postoperative mobilization compared to primary closure or flap reconstructions. Surgeons should consider biological mesh reconstruction especially in patients receiving neoadjuvant radiotherapy to mitigate wound complications.

Conclusion

The use of biological mesh with omentoplasty in pelvic floor reconstruction after ELAPE, PE, or SR for locally advanced rectal cancer is associated with favorable outcomes in perineal hernia prevention and wound healing. This technique represents a promising alternative to traditional closure methods in complex pelvic resections.

References

1. Holm T et al. 2012 -- Extralevator Abdominoperineal Excision for Low Rectal Cancer
2. West NP et al. 2010 -- Perineal Wound Morbidity After ELAPE
3. Morris E et al. 2014 -- Biological Mesh Reconstruction in Pelvic Surgery
4. FDA 2016 -- Definition of Complete Wound Healing
5. Clavien PA et al. 2009 -- Classification of Surgical Complications