It is a surgical procedure in which the stapes is removed and replaced with a prosthesis, a piston usually made of teflon/stainless steel/gold. Its a mode of treatment for otosclerosis (otospongiosis). Another procedure, stapedotomy is done sometimes (a hole is punched into the footplate of stapes and the implant fixed there).
Indications
- Conductive deafness due to fixation of stapes.
- Air bone gap of at least 40 dB.
- Presence of Carhart's notch in the audiogram of a patient with conductive deafness.
- Good cochlear reserve as assessed by the presence of good speech discrimination.
Contraindications
- Poor general condition of the patient.
- Only hearing ear.
- Poor cochlear reserve as shown by poor speech discrimination scores
- Patient with tinnitus and vertigo
- Presence of active otosclerotic foci (otospongiosis) as evidenced by a positive flemmingo sign.
- Conductive deafness due to Ehlers-Danlos Syndrome (EDS)
Complications
- Facial palsy
- Vertigo in the immediate post op period
- Vomiting
- Perilymph gush
- Floating foot plate
- Tympanic membrane tear
- Dead labyrinth
- Perilymph fistula
- Labyrinthitis
- Granuloma (Reparative)
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