Pediatric Flat Feet: A 2020 Guide for Clinicians to Identify the Boomerangs

The pediatric flatfoot has long occupied a place in the medical literature, with concerns about the significance of its appearance. At the end of the first decade of the 21st century, an article in this journal provoked active debate about the pediatric flatfoot as part of development, and proposed a considered titration of presenting cases in an effort to justify treatment and appreciated the range and expected change in normal foot posture with growth. A decade later, the availability of normative pediatric foot posture data, and the prospective findings to confirm lessening flat feet with age, encourage a structured and considered approach to this frequent primary care presentation. The pragmatic concept of the "boomerang" is built on the research identifying pediatric flat feet likely to be symptomatic, thus requiring intervention, and filtering from those likely to remain asymptomatic. Differential diagnoses are advisedly considered, and gait remains the hallmark outcome. In this contemporary guide, an eight-step strategy has been developed to improve the approach to community pediatric flatfoot concerns. Furthermore, the three boomerang flat feet factors delineating symptomatic from asymptomatic flat feet, and applicable cutoff levels, are availed for practical reference and use. Given the recognized state of overdiagnosis and resulting unnecessary treatment that pervades the 21st century, it is timely for clear 20/20 vision for the presentation of pediatric flatfoot.