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Dynamics of hiatal hernia recurrence: how important is a composite crural repair?
Francesca M Dimou1, Vic Velanovich2
1Division of Gastrointestinal Surgery, Department of Surgery, University of South Florida Morsani College of Medicine, 5 Tampa General Circle, Tampa, FL, 33606, USA. fdimou@usf.edu.
Introduction:
Hiatal hernia recurrence rates vary widely. The true causes of recurrences are not fully understood but likely multifactorial. Surgical approaches and techniques have evolved over time to try and reduce recurrence rates after hiatal hernia repair. Our objective is to provide a current review on the physiology of hiatal hernias and the importance of a composite crural repair on hiatal hernia recurrence rates; more specifically, for this review, a composite repair is defined as a repair requiring more than primary closure of the crura.
Methods:
A recent review of the literature was conducted to identify studies reporting on hiatal hernia pathophysiology, stress, and tension, as well as the role of composite repair.
Results:
There is a paucity of studies focusing on the pathophysiology of hiatal hernias and recurrence rates. Articles that report on the pathophysiology of the hiatus were found to have alterations of the extracellular matrix, collagen composition, changes in metalloproteinases (MMPs), and differences in genetic composition. The role of composite repair on reducing recurrence rates is not well studied.
Conclusions:
Hiatal hernias remain a complex problem with no ideal surgical technique. It is likely that the pathophysiology of hiatal hernias is multifactorial, and more studies need to be done to better understand the potential underlying mechanisms for hiatal hernias so this may also further identify the ideal surgical repair.
