Ear
Tubes
The
surgical procedure for placing tubes in the ears has become one
of the most commonly performed operations of any kind. A
tiny tube, with a collar on both ends is slipped through a tiny
incision in the eardrum. This pressure-equalization (PE) tube
provides a temporary, extra Eustachian tube to allow bacteria
and fluid to drain from the middle ear.
Tympanoplasty
The
tympanic membrane, or ear drum, is made of tissue similar to
skin. In most cases, perforations of the ear drum by some type
of trauma, such as a puncture by a cotton tipped applicator, or
a slap injury, will heal spontaneously, in much the same way a
cut on an arm would heal.
When a
tympanic membrane perforation persists, the middle ear is
unprotected and is vulnerable to infection. When a perforation
is present, the ear canal must be kept dry. Repair of the
tympanic membrane perforation reinstates the protective barrier
to the middle ear, and in some cases can also improve hearing.
Mastoidectomy
Mastoid
air cells are open, air-containing spaces in the skull behind
the ear. A mastoidectomy is the surgical removal of these
mastoid air cells. The surgery may extend into the middle ear.
The
surgery used to be a common way to treat an infection in the
mastoid air cells, which usually came from an ear infection that
spread to the nearby bone in the skull. Mastoidectomy is now
seldom needed, as the infections are commonly treated with
antibiotics. However, this surgery may be used to treat other
problems.
Ossicular
Reconstruction
Ossicular
reconstruction is the reconstruction of tiny bones of the middle
ear. If the gap between the anvil bone and the stapes is
small, a small piece of bone or cartilage from the patient can
be inserted; if is is large, the incus bone is removed, modelled
into a prosthesis, and reinserted between the stapes and the
malleus. Reconstruction could also be achieved by inserting a
strut made from artificial bone. For tympanoplasty with
ossicular reconstruction, the patient usually stays in the
hospital overnight. The recovery period is about four weeks.
Stapedectomy
Patients
with otosclerosis and significant hearing loss are candidates
for a stapedectomy. During
a stapedectomy, an incision is made in the skin of the ear
canal, the skin and eardrum are lifted to expose the stapes
bone, and the stapes bone is removed. An incision is made above
the ear and the tissue is removed. The tissue is used to cover
the opening created by the stapes bone removal. A prosthesis is
put in place where the stapes bone had been and the eardrum and
skin of the ear canal are laid back in place. The ear canal is
then packed.
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