Design: Propensity-matched registry cohort
Population: 238 adults after minimally invasive extraperitoneal ventral hernia repair
Primary outcome: One-year pragmatic hernia recurrence
Effect: 7.6% medium-weight vs 12.6% heavyweight (p = 0.196)

From the Abdominal Core Health Quality Collaborative registry (Surgical Endoscopy, 15 October 2026), 821 adults had minimally invasive preperitoneal or retromuscular ventral hernia repair with uncoated permanent synthetic mesh, either medium-weight (40-60 g/m²) or heavyweight (over 75 g/m²). After propensity matching, 119 patients in each group were compared.

There were no 30-day surgical site infections in either group, and surgical site occurrences, procedural interventions and reoperation were similar. One-year pragmatic recurrence was 7.6% with medium-weight and 12.6% with heavyweight mesh, a difference that was not statistically significant. Umbilical hernias more often received medium-weight mesh, subxiphoid hernias heavyweight.

The authors had expected heavyweight mesh to reduce recurrence; it did not, at least by one year. Mesh choice can reasonably follow defect site and surgeon preference while longer follow-up accrues.

Either medium- or heavyweight uncoated synthetic mesh is reasonable for minimally invasive extraperitoneal ventral repair on current data.
Do not expect heavyweight mesh to lower one-year recurrence in this setting.
Record mesh weight and position in the operation note for future comparison.
Follow patients beyond one year; late recurrence is where differences may appear.

Why it matters

It challenges the assumption that more mesh means a more durable repair in the retromuscular plane.

The statistics, in plain English

A 5-point difference in recurrence with only 119 per group is too imprecise to call either way; a real difference of that size could have been missed.