Abstract
INTRODUCTION: High-frequency ultrasound (HFUS) has become increasingly prevalent in dermatological clinical settings over the past decade. However, understanding its appropriate indications and significant utility in onychology is not fully exploited. Based on a clinical self-assessment, the study aimed to provide fundamental recommendations regarding the applications, indications, and limitations of HFUS in nail disorders. METHODS: A clinical practice assessment survey, comprising 15-item multiple-choice questions focused on nail unit ultrasound, was distributed online to clinicians' members of the Colombian Network of Research and Treatment for Nail Disorders (RITU), during the first quarter of 2024. Participation was voluntary and anonymous; no financial compensation was offered. Aggregated responses were analyzed confidentially. RESULTS: Around 44 clinicians (86.4% dermatologists and 13.6% radiologists) participated in the study. While most acknowledged the value of HFUS in evaluating nail disorders, knowledge gaps were evident, particularly concerning optimal settings and proficiency maintenance. Despite the widespread use of HFUS, a gap in expertise was observed concerning its application in specific nail pathologies. Although HFUS was the preferred modality for many nail conditions, some concerns about its reliability suggest the need for further training to ensure confident and effective utilization. CONCLUSION: This study revealed significant knowledge gaps among clinicians regarding the appropriate application of dermatologic ultrasound and other imaging modalities in the evaluation of nail disorders. The findings emphasize the value and specific indications for HFUS in assessing nail pathology, highlighting the need for enhanced training and education in this specialized area.