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Of the many deformities of the lower lip none is more distressing or more difficult to remedy than ectropion or eversion of the lower lip following extensive burns of the lower part of face and neck. Burns involving the deeper layers of the skin about the neck are almost always followed by this deformity, together with an extensive amount of scar tissue. This often extends up to the cheeks, but more often involves the skin about the inferior maxillary region and the anterior part of neck. The firm adherence of the scar tissue to the muscles and structures immediately beneath it renders the chelioplastic operations usually described in text-books difficult, uncertain or impossible.
The operation usually recommended for this condition consists in making a V-shaped incision corresponding to the margins of the inverted lip, raising the lip and closure of the wound thus made in the form of the letter
JACOBSON JH. A CONTRIBUTION TO CHEILOPLASTY.. JAMA. 1907;XLVIII(9):795-796. doi:10.1001/jama.1907.25220350053002c