The pathological action of the alar part of the nasalis muscle may be the most important factor to the deformities of alar cartilage on cleft side;

Methods: the operation procedure included frustration and elevation of the nasal bone and part of the forntal process of maxilla and replacement of the nasal septum between greater alar cartilages.

Alar cartilaginous fibrous ring and alar cartilaginous muscular ring are very important anatomic structures to maintain the shape of the lower part of the nose.