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Three-Dimensional Measurement of the Lateral Lip Element Sacrificed in Primary Repair of a Unilateral Cleft Lip.

Abstract：

BACKGROUND:In most children with a unilateral cleft lip (UCL), because lateral lip tissue on the cleft side is congenitally short, the lateral lip element should be appropriately excised during primary cheiloplasty so that symmetric nasolabial features are obtained after surgery. The purpose of this study was to measure how much of the lateral lip element is removed during primary cheiloplasty and compare the amount of sacrifice between different incision designs. METHODS:Preoperative 3-dimensional images of 50 infants with UCL were randomly selected. The incision designs of 3 representative techniques (Millard, Onizuka, and Fisher) were drawn on the images that were obtained before the primary repair. The lateral lip tissue excised by each technique was estimated as a percentage of the surface area of the sacrificed lateral lip to the entire lateral lip of the cleft side. RESULTS:In the case of incomplete UCL, the median values (range) were 3.2% (1.1%-5.9%), 11.6% (8.3%-20.1%), and 27.2% (15.1%-42.3%) for the Millard, Onizuka, and Fisher repairs, respectively. In cases of complete UCL, no sacrifice was needed for the Millard repair, whereas the median values (range) were 10.6% (5.2%-28.9%) and 22.5% (11.5%-48.6%) for the Onizuka and Fisher repairs, respectively. In Millard repair, the median values (range) of the lateral lip element that was resected before skin closure according to the "cut-as-you-go" policy were 5.8% (2.2%-11.8%) in cases with an incomplete UCL and 4.9% (2.7%-9.1%) in cases with a complete UCL. CONCLUSIONS:Our study demonstrated that sacrifice of the lateral lip element was minimal in the Millard repair, whereas it could exceed 20% in the Fisher repair. However, additional sacrifice of the advancement flap was needed in the Millard-type repair. The ratio of the lateral lip sacrifice varied between patients. Although UCL repair techniques should not be evaluated with the sacrifice ratio, excessive sacrifice of the lateral lip tissue can complicate the secondary lip correction. We recommend that surgeons estimate preoperatively how much lateral lip element will be sacrificed with each incision design using a 3-dimensional image for each child with a UCL.

journal_name

Ann Plast Surg

journal_title

Annals of plastic surgery

authors

Fujimoto H,Morioka D,Akamine S,Takagi S,Tosa Y,Kadomatsu K,Ohkubo F

doi

10.1097/SAP.0000000000002358

subject

Has Abstract

pub_date

2020-08-01 00:00:00

pages

180-184

issue

eissn

0148-7043

issn

1536-3708

journal_volume

pub_type

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Three-Dimensional Measurement of the Lateral Lip Element Sacrificed in Primary Repair of a Unilateral Cleft Lip.