Methods: The superficial and deep layers of orbicularis oris muscle on the lateral side of the cleft were dissected and sutured to the correspondent layers on the medial side respectively.

• 方法:解剖分离患侧口轮匝肌深层、浅层的鼻唇束及鼻束。深层及浅层鼻唇束与健侧相应肌束缝合。