Determining the Optimal Technique for Bar Fixation in the Repair of Pectus Excavatum.

Introduction: Pectus bar stabilizers are routinely used for bar fixation in the repair of pectus excavatum. We aimed to determine the optimum technique for bar fixation by reviewing our institutional experience with the use of bilateral, unilateral, and no stabilizer placement. Methods: Retrospective single pediatric center review of patients who underwent minimally invasive bar placement for pectus excavatum and subsequent bar removal between December 2001 and July 2019 was performed. Demographic data, details about the surgery, the number of bars and stabilizers used, and follow-up information were collected. Stabilizer-related complications included pain requiring stabilizer removal, surgical site infections (SSIs), and bar displacement. Data are presented as medians with interquartile ranges (IQRs) and frequencies with percentages. Results: A total of 561 patients were included. The cohort was predominantly male (83.1%, n = 466) with a median age at the time of bar placement of 15 years (IQR 12.4, 16.3) and a median Haller index of 3.8 (IQR 3.4, 4.5). Pain attributed to the stabilizer site that required removal was observed only in the bilateral stabilizer group (2.5%, n = 13). SSI related to the stabilizer site occurred in 1.8% (n = 9) of the bilateral stabilizer cases and 2.1% (n = 1) of the unilateral stabilizer cases. Bar displacement was observed in 0.6% (n = 3) of the bilateral stabilizer cases and 2 of those patients also had an SSI. There were no complications in the no stabilizer group. Conclusion: As the trend moves toward unilateral and no stabilizer use, we observe fewer cases of pain requiring stabilizer removal with no increase in bar displacements.