Reconstruction of medium-sized defects of oral commissure by combining double full-thickness cheek rhomboidal flaps and a small lip switch flap.

Reconstruction of oral commissure defects aims at securing oral competence and providing an acceptable appearance. The methods described by using either a cross lip flap or a flap from the adjacent cheek skin and mucosa may not be able to achieve such goals if each method is used on its own. We have combined double full-thickness cheek rhomboidal flaps with a small lip switch flap from the remaining lip segment to reconstruct medium-sized full-thickness defects of the oral commissure, following tumor excision in 7 patients. The functional and aesthetic outcomes were assessed by the evaluation of 3 parameters under each category. Each parameter received a score of good, moderate, or poor. Six patients had a good overall functional score. Microstomia was noted only in 1 patient. The overall aesthetic score for all the 7 patients was moderate. In conclusion, reconstruction of medium-sized commissural defects by the present technique achieves adequate oral competence and a satisfactory cosmetic result.