A stapedectomy is a surgery to replace one of the tiny bones inside your ear with an artificial substitute, restoring hearing that has been lost when that bone becomes stuck in place. The procedure has a success rate above 90%, takes about 90 minutes to two hours, and is usually done as an outpatient surgery, meaning you go home the same day.
Why the Surgery Is Needed
Deep inside your ear, three of the smallest bones in your body work together like a chain to transmit sound vibrations from your eardrum to your inner ear. The last bone in that chain, the stapes, is roughly the size of a grain of rice. In a condition called otosclerosis, abnormal bone growth gradually locks the stapes in place so it can no longer vibrate freely. Sound still hits your eardrum, but the signal gets stuck before it reaches the inner ear. The result is progressive hearing loss, usually in one ear first, that a hearing aid can partially compensate for but cannot fix at the source.
Otosclerosis is the most common reason for a stapedectomy. It tends to develop in early to middle adulthood and can run in families. When hearing loss becomes significant enough that a hearing aid no longer provides adequate benefit, surgery becomes the more definitive option. The procedure can also be performed in children with juvenile otosclerosis and in some cases of congenital stapes abnormalities.
What Happens During the Surgery
The operation can be done under either local or general anesthesia. Your surgeon works through the ear canal, using a laser or micro-instruments to reach behind the eardrum. The eardrum is carefully lifted to expose the three middle ear bones, and the frozen stapes is removed. A tiny prosthesis, typically just a few milligrams in weight, takes its place. The eardrum is then laid back into position and held with packing material while it heals.
In most cases there is no external incision at all, though some surgeons make a small cut behind or in front of the ear to improve access. The entire procedure typically lasts 90 minutes to two hours.
Types of Prostheses
The replacement stapes is a miniature piston that hooks onto the next bone in the chain (the incus) and transmits vibrations into the inner ear. Several materials are used, and each has trade-offs. Teflon prostheses are lightweight at about 3.3 milligrams and cause virtually no tissue reaction. Stainless steel versions are heavier at around 12.5 milligrams, closer to the 6-milligram weight of a natural stapes, and their mechanical stiffness more closely mimics a normal mobile stapes bone.
That weight difference has practical consequences. In comparative studies, the heavier stainless steel prosthesis produced slightly better hearing results, particularly at high frequencies, with about a 6-decibel advantage over Teflon. Complete closure of the hearing gap was also more common with steel (80% vs. 52%), though when measured at a more forgiving threshold of within 10 decibels, both materials performed nearly identically at 96 to 97%. Titanium prostheses are also widely used today, valued for their biocompatibility and light weight. Your surgeon will choose the type best suited to your anatomy.
Success Rates and Risks
About 9 in 10 people experience a significant hearing improvement after stapedectomy. The overall failure rate is roughly 5 to 10%, most often caused by the prosthesis shifting out of position or gradual erosion of the incus bone it attaches to. In about 1 in 20 cases, hearing may actually worsen after surgery, and in roughly 1% of cases, total hearing loss in that ear can result.
Temporary changes in taste are surprisingly common, affecting about 62% of patients, because a nerve responsible for taste sensation on one side of the tongue runs directly through the surgical area. The good news is that nearly 96% of people who experience this recover their normal taste within a year. Other risks include dizziness, which is usually short-lived, and in rare cases facial nerve injury, since that nerve passes close to the surgical site and is sometimes only partially covered by bone. If the surgeon encounters an anatomical variation that makes the procedure unsafe, such as the facial nerve sitting directly over the stapes, the surgery may be stopped before the prosthesis is placed.
Recovery Timeline
Most people return to work or school within a few days, depending on how they feel. Hearing improvement is not always immediate. Packing material inside the ear and normal post-surgical swelling can muffle sound at first, and it may take several weeks before you notice the full benefit. A follow-up appointment is typically scheduled about two weeks after surgery.
The restrictions during recovery are designed to protect the delicate repair from pressure changes and infection:
- Water: Keep all water out of the ear canal. You can wash your hair three days after surgery if you seal the ear with a cotton ball coated in antibiotic ointment.
- Nose blowing: Do not blow your nose for four weeks. Sniffing is fine. The concern is that blowing your nose creates pressure that can travel up to the middle ear and dislodge the prosthesis.
- Physical activity: Avoid vigorous exercise and sports until your post-operative visit, typically around three weeks after surgery, when you can resume full activity.
- Flying: Air travel is off-limits for six weeks, since cabin pressure changes could stress the healing ear.
What Recovery Feels Like
Some dizziness in the first few days is normal and typically fades quickly. Your ear may feel full or plugged, similar to the sensation of water trapped after swimming. Mild pain or discomfort is common but usually manageable. If you had adhesive strips placed behind the ear, they are removed at your two-week appointment or at home if the visit falls later than that.
Patients who have had severe vertigo or nausea after previous ear surgeries are more likely to experience those symptoms again, which is something surgeons factor into the decision about whether to proceed. For the large majority of people, though, the recovery is straightforward, and the hearing improvement that follows is lasting.