system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Most commonly involved ossicle in CSOM is
assistant
The correct answer 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