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  • Title: Purse-string suture combined with subcision and dermal graft for the treatment of wide depressed scars and boxcars.
    Author: Tsao SB, Wu CC, Lee CC.
    Journal: J Cosmet Dermatol; 2022 Nov; 21(11):5969-5976. PubMed ID: 35984570.
    Abstract:
    BACKGROUND: Dermal layer injuries can result in depressed or indented scars even when there is no subcutaneous injury. These scars can result from acne, chickenpox, trauma, or skin infection. Several procedures, including primary closure, subcision, microneedling, and dermal grafting, have been reported to be used to treat depressed scars, boxcars, or acne cosmetics. These procedures have not, however, been shown to be very effective when applied to the treatment of deep depressed scars, boxcars, or acne cosmetics. In this retrospective study, we assessed scar improvement in patients with deep depressed facial scars and boxcars treated with our novel combination of techniques. METHODS: This study included all patients treated for deep depressed scars and boxcars at our clinic from 2018 to 2021. To be included, patients had to present in our clinic for the treatment of deep depressed scars or boxcars, have no prominent subcutaneous layer injury, and have full set of clear pre-and post-procedure photographs. All patients initially received technique combination including scar subcision, inner purse-string suturing, and dermal grafting for the first stage surgery treatment. In cases of residual uneven superficial scars, laser dermabrasion resurfacing was used as second-staged treatment. Preoperative and six-month postoperative scar appearance photographs were assessed for improvement by our three nonmedical staff members and divided into four improvement groups, as minimal, moderate, good, and excellent. RESULTS: This study included a total of 24 patients (20 females and four males) with facial scarring. Two patients (8.3%) had moderate, 13 (54.2%) good and nine (37.5%) excellent improvement post-treatment. There were no instances of minimal improvement. Four patients received second stage laser dermabrasion resurfacing for residual uneven superficial scars. CONCLUSION: We concluded deep depressed scars and boxcars can be easily, safely, and effectively treated using our novel combined scar subcision, inner purse-string suturing, and dermal grafting treatment with possible second-staged laser dermabrasion, and without major complications.
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