Ventral Bulla Osteotomy
(Other terms also used: Inflammatory Polyp, Bulla Osteotomy, Ventral Bulla Osteotomy, Middle Ear Polyp, Polyp, Pharyngeal Polyp, Throat Polyp)
When chronic external ear canal infections spread, the disease gravitates down to the eardrum rupturing it and causing the middle ear (bulla cavity) to become infected as well. If the eardrum has ruptured, the bulla can be cleaned through the external canal by flushing. However, if the drum has subsequently healed, it must once again be perforated before infected tissue can be removed from the middle ear. Many times the infected material is so compacted in the middle ear that flushing alone is not beneficial. Performing a Ventral Bulla Osteotomy retains the eardrum and hearing while allowing for thorough cleaning of the middle ear.
" The most common condition requiring bulla osteotomy is inflammatory polyps in cats"
The surgery involves making a small opening in the neck to gain access to the bulla and removing the bottom of the bony canal along with all infected material in the middle ear. The diseased tissue is studied to identify the bacteria or yeast that have caused the problem. Appropriate antibiotics can then be prescribed to cure the infection. Rubber tubes are left in the neck for approximately two weeks after surgery to allow any residual infection to drain.
Signs of a diseased middle ear cavity (bulla) and inner ear
"Clinical signs vary, but usually include discharge from the ear and scratching at the ear."
1. Scratching or rubbing the ear
2. Discharge coming out of the ear
3. Loss of appetite
5. Vestibular signs
6. Horner's syndrome
7. Facial nerve paralysis is uncommon with middle ear problems, but occasionally is seen in dogs
8. Pain upon opening the mouth - due to inflammation of the joint of the jaw (TMJ)
9. Breathing difficulty or snorting due to
Inflammatory polyps in cats
· "Bulla osteotomy involves opening the middle ear to remove the offending polyp."
Prognosis usually is good following surgery.