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The modified chondrocutaneous advancement flap for the reconstruction of helical defects of the ear.

The ear is a complex three-dimensional structure with well-defined anatomic landmarks and exposed contours. Visually the ear is defined by the outer form of the helix and the ear lobe. The form of the helix is defined by the cartilage framework, which takes up two-thirds of the upper part of the ear. The helical sulcus disappears about 1 to 2 cm above the ear lobe, corresponding to the place where the helical rim is without cartilage support. The shape of the ear lobe varies strongly from one individual to another.