Comparing the outcomes of external oblique and transversus abdominus release using the AHSQC database.

Abstract

Myofascial release techniques at the time of complex hernia repair allow for tension-free closure of the midline fascia. Two common techniques are the open external oblique release (EOR) and the transversus abdominis release (TAR). Each technique has its reported advantages and disadvantages, but there have been few comparative studies. The purpose of this project was to compare the outcomes of these two myofascial release techniques. The Americas Hernia Society Quality Collaborative (AHSQC) database was queried and produced a data set on 24 May 2018. All patients undergoing open incision hernia repair with an open EOR or TAR were evaluated, and outcomes were compared including hernia recurrence, quality of life, and 30-day wound-related complications. 3610 patients met the inclusion criteria of undergoing open incisional hernia repair (501 undergoing EOR and 3109 undergoing TAR). Seventy surgeons from 50 institutions contributed EOR patients, and 124 surgeons from 89 institutions contributed TAR patients with no differences between the two groups in surgeons' affiliation. Comparing open EOR and TAR showed no significant differences in hernia recurrence, quality of life, or 30-day surgical site infection rate. EOR had a significantly higher rate of surgical site occurrences compared with TAR (p < 0.05); however, this did not result in an increase in surgical site occurrences requiring procedural interventions. Equivalent outcomes were achieved using the EOR or TAR techniques in the open repair of incisional hernias. Both techniques offer consistently good outcomes and are important adjuncts in the repair of complex incisional hernias.