The History and Legacy of the Foker Process for the Treatment of Long Gap Esophageal Atresia.

Historically, children afflicted with long gap esophageal atresia (LGEA) had few options, either esophageal replacement or a life of gastrostomy feeds. In 1997, John Foker from Minnesota revolutionized the treatment of LGEA. His new procedure focused on "traction-induced growth" when the proximal and distal esophageal segments were too far apart for primary repair. Foker's approach involved placement of pledgeted sutures on both esophageal pouches connected to an externalized traction system which could be serially tightened, allowing for tension-induced esophageal growth and a delayed primary repair. Despite its potential, the Foker process was received with criticism and disbelief, and to this day, controversy remains regarding its mechanism of action - esophageal growth versus stretch. Nonetheless, early adopters such as Rusty Jennings of Boston embraced Foker's central principle that "one's own esophagus is best" and was instrumental to the implementation and rise in popularity of the Foker process. The downstream effects of this emphasis on esophageal preservation would uncover the need for a focused yet multidisciplinary approach to the many challenges that EA children face beyond "just the esophagus", leading to the first Esophageal and Airway Treatment Center for children. Consequently, the development of new techniques for the multidimensional care of the LGEA child evolved such as the posterior tracheopexy for associated tracheomalacia, the supercharged jejunal interposition, as well as minimally invasive internalized esophageal traction systems. We recognize the work of Foker and Jennings as key catalysts of an era of esophageal preservation and multidisciplinary care of children with EA.

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Conflicts of interest We declare that there are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome.