A Proposal for Determining a Diagnostic Cutoff Value of a New Ultrasonographic Index of Retronychia Inversely Correlating with Disease Severity
| Autor: | Nebahat Demet Akpolat, Fatih Göktay, Levent Soydan, Eckart Haneke, Emre Kaynak |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
business.industry
Nails Ingrown General Medicine Phalanx Nail plate Severity of Illness Index Pearson product-moment correlation coefficient 030207 dermatology & venereal diseases 03 medical and health sciences symbols.namesake 0302 clinical medicine Nails Disease severity 030220 oncology & carcinogenesis symbols Humans Cutoff Medicine Clinical severity Ultrasonography Inverse correlation Nuclear medicine business |
| Zdroj: | Journal of the American Podiatric Medical Association. 110 |
| ISSN: | 8750-7315 |
| Popis: | BackgroundUltrasonography has demonstrated a shortening of the distance between the origin of the nail plate and the base of the distal phalanx in retronychia. The aim of this study was to analyze the clinical and ultrasonographic features of retronychia.MethodsWe evaluated the clinical findings in 18 patients with retronychia, along with the ratio of ultrasonographic distance a, extending between the nail plate origin and the base of the distal phalanx, to distance b, perpendicular to distance a, extending between the nail plate origin and the upper margin of the distal phalanx.ResultsRetronychia was present in 26 nails. The mean ± SD distance a was 7.66 ± 1.64 mm and distance b was 3.56 ± 1.95 mm. The mean ± SD a/b ratio was 2.59 ± 1.11. There was a significant inverse correlation between a/b ratio and clinical severity (Pearson correlation = –0.668; P < .001). The cutoff value of this ratio was 3.319, with specificity of 90% and sensitivity of 69%.ConclusionsThe ratio of distance a/distance b and the cutoff value of this ratio may help in making the diagnosis, in objectively determining the disease severity, and in selecting a patient-specific treatment approach. |
| Databáze: | OpenAIRE |
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