Abstract:

Objective To evaluate histomorphometric features of the retroauricular fascia and geometrically re-design a

novel fascia flap to improve the posterior appearance of reconstructed ear and reduce complications after ear elevation.

Methods The thickness of retroauricular fascia was measured by ultrasound in 16 patients. The posterosuperior auricular

fascia flap was designed by geometry. And the method was applied in 125 cases of ear elevation. Results The fascia layer

thickness increased from superior to inferior. By using posterosuperior auricular fascia flap， the surgical procedure became

easier， the posterior appearance of reconstructed ear was more natural after operation， and the incidence of postauricular

hypertrophic scarring and partial skin graft necrosis also decreased. Conclusion The modified posterosuperior auricular

fascia flap designed to maximize the use of the posterior fascia tissue of the parietal side is superior to the traditional

retroauricular fascia flap in terms of surgical effect and reduction of postoperative complications.

Key words:

Congenital microtia, Ear elevation, Retroauricular fascia, Posterosuperior auricular fascia flap