Incisura terminals are between
There is no cailage between tragus and crus of the helix and an incision made in this area will not cut through the cailage and is used for the endaural approach in surgery of external auditory canal and mastoid. Reference: Dhingra 6th edition; page no 2
Tragus and crux of helix
Ear lobule and antihelix
Antihelix and external auditory meatus
Tragus and ear lobule
Ear