During ossiculoplasty for chronic otitis media, the surgeon finds the incus severely eroded but the stapes superstructure completely intact and mobile. Which prosthesis is the correct choice?
- A Total ossicular replacement prosthesis (TORP)
- B Partial ossicular replacement prosthesis (PORP) ✓
- C Autograft incus interposition between malleus and footplate
- D Titanium clip prosthesis crimped to the stapes tendon
Correct answer: B. Partial ossicular replacement prosthesis (PORP)
Explanation
A PORP is used when the stapes superstructure is intact, bridging the prosthesis from the tympanic membrane or malleus to the stapes head. A TORP is reserved for cases where only the footplate remains, since it must couple directly to the footplate. Using a TORP with an intact superstructure wastes the available stable platform and gives poorer transmission.
Reference: Dhingra's Diseases of Ear, Nose and Throat, 8th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.