Surgical Approach and Long-Term Recurrence After Ventral Hernia Repair

As robotic-assisted surgery has become increasingly popular for ventral hernia repair, questions remain about its long-term efficacy compared to traditional laparoscopic and open techniques. This study aimed to determine whether the robotic-assisted approach offers superior long-term outcomes by evaluating the risk of operative hernia recurrence over a 10-year period using a large national cohort of Medicare beneficiaries.

Researchers conducted a retrospective cohort analysis of 161,415 patients who underwent elective inpatient ventral, incisional, or umbilical hernia repair between 2010 and 2020. To address potential selection bias—where surgeons might choose specific techniques for patients based on unmeasured factors like hernia complexity—the team employed an instrumental variable (IV) analysis. This method used the regional adoption rate of robotic-assisted surgery in the prior year as an instrument to account for confounding variables that standard regression models might miss. The primary outcome was operative hernia recurrence, identified through subsequent repair procedures within the Medicare claims data.

Despite the rapid adoption of robotic-assisted platforms, the study found that patients who underwent robotic-assisted hernia repair had a higher risk-adjusted cumulative incidence of operative recurrence (13.43%) compared to those who underwent laparoscopic (12.33%) or open (12.74%) repairs. These findings remained consistent across various sensitivity analyses, including stratifications by hernia subtype and surgeon volume. The results suggest that the robotic-assisted approach does not currently provide a long-term advantage in preventing hernia recurrence compared to established methods.

The rapid shift toward robotic-assisted ventral hernia repair has been driven by perceived benefits such as improved ergonomics and dexterity. However, this study provides evidence that these technological advantages do not translate into lower long-term recurrence rates. These findings suggest that clinicians and health systems should critically evaluate the clinical applications of robotic-assisted surgery and consider whether its widespread adoption is justified by patient outcomes.