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 |