Columellar base deviation is a common and challenging deformity in patients with unilateral cleft lip. Debate still continues on its surgical correction without sufficient studies to establish an effective management. This article presents our experience in correcting the columellar base deviation with the muscle-driven method in primary lip repair. The key is to perform extensive muscle dissection and reconstruction. In the medial lip segment, muscle dissection is performed subcutaneously up to the contralateral nostril floor for effective lengthening and rotation. In the lateral lip segment, muscle dissection is executed in both submucosal and subcutaneous planes, and muscle component is extensively separated from the lip skin and buccal mucosa. The lateral muscle flap is advanced and reattached to the contralateral nostril floor and columellar base using a subcutaneous sustaining suture. Cinching suture between columellar base and alar base is performed. These two sutures help to centralize and over-correct the columellar base. Bilateral muscle components are re-oriented and approximated in a Z-plasty format for lengthening of the lip. The patients were followed up for at least 3 years. Quantitative measurements of deviation in columellar base angulation were executed, which revealed 55.8±2.6° (before nasoalveolar molding), 29.6±1.7° (after nasoalveolar molding), and 2.8±0.4° (postoperative follow-up), respectively. The muscle-driven method represents a safe and effective technique to correct columellar base deviation in patients with unilateral cleft lip.
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