Abstract
The Skin Laxity Severity Scale for the buttocks was previously developed to separately assess buttock ptosis, a scalloped appearance of the skin, infragluteal fold, localized fat on the lower third of the buttocks, and linear depressed lesions. A more objective, faster and shorter version of this scale, to be evaluated visually, would be more feasible to apply in daily practice. To present a new skin laxity scale for the buttocks: the Skin Laxity Visual Scale (SLVS). To establish the scale, investigators chose, by consensus, the most representative cases of each skin laxity grade. The images were graphically edited to better represent the degree of skin laxity identified in a previous study. Scale validity and reliability were assessed in two validation cycles, performed by eight dermatologists assessing 50 clinical cases. Overall, Kendall's, weighted-kappa, and intraclass correlation coefficients indicated very good reliability and consistent inter- and intra-rater agreement (p<0.001). The scale validity was confirmed by criteria validity tests (rs: 0.76, p<0.05). The SLVS for the buttocks is a reliable, reproducible, accurate and valid scale to identify skin laxity severity and its different features. It will very likely be an easy-to-use and convenient tool to appropriately assess improvement obtained with treatment and follow patients.
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