Most commonly involved ossicle in CSOM is
Ossicular necrosis is one of the sequale of CSOM. Most commonly, long process of incus gets necrosed. Sometimes, stapes superstructure also gets necrosed. This increases the conductive hearing loss to more than 50 dB Ref: Diseases of ENT by Dhingra 6th edition Pgno : 73
Malleus
Incus
Stapes
All the above
Ear