Classifications of Microtia:

Microtia is divided into separate classifications (the classic microtia is considered Grade III).

Anotia

Anotia technically means no ear. This ear deformity, the most severe form of microtia may at times be called anotia.

Grade 1 Microtia

The ear is smaller than normal although most of the features of a normal ear such as a well-defined lobule, helix and anti-helix are present. This can occur with or without an external auditory canal.

Grade 2 Microtia

The normal features of the ear are missing. There is still a lobule and a remnant of helix and antihelix.

Grade 3 Microtia

"The Classic Microtia": The ear consists of a vertical skin appendage with a malformed lobule (earlobe) on the lower end. There is usually firm tissue at the upper end which is made up of a disorganized cartilaginous vestige. The lower end is usually a piece of lobular tissue which will be the future earlobe when reconstructed. Usually there is no external auditory canal (atresia).