Group

Type of Tympanoplasty

Ossicular pathology

Grafts

A

Type II―stapes columella

Stapes intact and

Mobile footplate

TF graft alone

or

thin cartilage disk and TF over stapes head

B

Type III―major columella

Stapes superstructure missing and footplate mobile:

- OW niche deep and narrow

- OW niche shallow and wide

TORP+thin cartilage+TF

or

trasposed incus+TF

C

Type IV―round window

TF over footplate and thick cartilage to shield RW