). Sterile physiologic saline was used to irrigate away bone debris; however, it was not possible to remove the bone debris at the margins of the fenestration by irrigation, likely contributing to the bone regrowth. After the fenestration was completed, the perilymph was open and exposed without egressing, just as patients with SSCD have their perilymph exposed.
The superior bulla is opened widely with a 1.5-mm diamond bur and the dissection is carried near, but not into the surrounding sinus, to avoid bleeding. Through the open bulla, the intact superior semicircular canal can be seen. The reattached muscles are glued to the skull with Medbond. This allows c+VEMP testing beginning the day after the surgical creation of the SSCD.Animals were anesthetized with isoflurane and placed in a small sound chamber . As shown in, ABR recordings were made by inserting pin electrodes subcutaneously at the vertex of the skull and just caudal to the right pinna; the ground electrode was inserted into the base of the tail.