Int Adv Otol. 2013;9(2):263-267.
We report the case of a male child with a bilateral pyramidal bony bar connecting and fixating the lenticular process of the incus to the bony posterior wall of the retrotympanum, thus obstructing ossicular chain movement and causing a bilateral conductive hearing loss. Removal of the pyramidal bony bar was performed while sparing the stapedial muscle's tendon.The ossicular chain regained its mobility and the round window membrane reflex could be elicited. The air-bone gap pure-tone average of 0.5, 1 and 2 kHz improved from 45 dB to 9.7 dB at 2 weeks and 6.7 dB at 4 months after surgery. The difference between the ossified stapedial muscle's tendon, the elongated pyramidal eminence and our case will be discussed.