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  • Title: Treatment of retronychia: A systematic review and suggested treatment algorithm.
    Author: Sechi A, Zengarini C, Piraccini BM, Alessandrini A, Bruni F, Patrizi A, Naldi L, Starace M.
    Journal: Dermatol Ther; 2022 Feb; 35(2):e15251. PubMed ID: 34877747.
    Abstract:
    Retronychia is an inflammatory disorder typical of the great toes characterized by arrested nail growth, ingrowth of the nail plate into the proximal nail fold and paronychia. There is no standardized treatment for retronychia, and its management should be weighed based on the severity stage, treatment modality, and clinical outcome. In this paper, a systematic review of the literature was performed to assess all published data regarding the treatment of retronychia. A total of 231 patients from 24 studies were included in the analysis. Conservative management was adopted in mild-intermediate forms, consisting of medical (topical or intralesional high-potency corticosteroids) and podiatric treatment (taping, clipping back the onycholytic plate, orthosis), leading to a global cure rate of 41.2%, with no reported side effects. Non-conservative management, that is, chemical or surgical avulsion of the nail plate, proved resolutive in 71.2% of cases. Surgical avulsion of the nail plate produced the highest cure rate (78.2%), but was burdened by 9.6% of long-term sequelae, mainly nail dystrophies. A decision-making algorithm was designed to give clinicians treatment indications based on the severity stage of retronychia, treatment invasiveness, and possible clinical outcomes.
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