Table 1 Macroscopic adhesion grades were assessed in 10 animals, based on a classification adapted from the scoring system proposed by Lien et al., following incisional hernia repair. Adhesion severity was classified from grade 0 (no adhesions) to grade 5 (dense adhesions with intestinal obstruction). The majority of animals (60%) exhibited moderate to severe adhesions (Grades 3–5), demonstrating the model’s reproducibility in replicating post-surgical adhesion formation. These findings provide a relevant framework for studying adhesion-preventive strategies in future research.

From: A reproducible rat model for predicting incisional hernia recurrence: insights for clinical translation

Grade

Criteria

Superficial (To skin)

Deep (To peritoneal surface)

0

0

No adhesion.

1

1

Thin (flimsy) adhesion, avascular, usually limited to one area, easily separable (not requiring sharp dissection).

2

2

Thin (flimsy) adhesion, vascular, limited to one area, moderately sharp dissection required.

3

3

Thin (flimsy) adhesion, more than one place, mostly vascular, difficult to separate; or a single firm adhesion involving bowel, omentum, liver, mesentery, or pelvic fat.

4

4

Thick, firm adhesion, more than one place (superficial). Thick, firm adhesion, more than one place, involves bowel, omentum, liver, mesentery, or pelvic fat, vascularized, requiring sharp dissection (deep).

5

5

A dense adhesion mass in which individual bowel loops could not be separated, and/or intestinal obstruction — some of the intestinal loops are dilated; sometimes, bleeding in peritoneal fluid may occur (superficial and deep).