Ossicular Chain Reconstruction

This surgery repairs the ossicles, which are three very small bones in the middle ear that help carry sound so we can hear. When these bones are damaged, sounds may seem quieter or muffled. During the procedure, the surgeon carefully repairs the bones or replaces them with a small prosthesis (tiny medical implant) to help sound travel more normally again.

There are two main types of ossicular chain reconstruction, depending on how many of the hearing bones are damaged:

• Partial reconstruction: The surgeon replaces one or two of the small hearing bones while leaving the remaining healthy bone(s) in place
• Total reconstruction: The surgeon replaces all three hearing bones when they are too damaged to repair

Ossicular chain reconstruction may be recommended for several reasons, including the following:

• Long‑lasting or repeated ear infections have damaged the small hearing bones
• Surgery to remove a cholesteatoma has affected the hearing bones
• Hearing loss is caused by injury to the ear or a condition present at birth that affects the bones

The potential benefits of ossicular chain reconstruction can include the following:

• Improved hearing, making sounds clearer and easier to hear
• Reduced risk of further damage to the middle ear by restoring normal structure and function

Like any surgery, ossicular chain reconstruction has some possible risks and limitations, including the following:

• Hearing may improve, but the amount of improvement can vary from person to person
• The tiny implant used to replace the hearing bones may shift or stop working as intended over time
• There is a small risk of infection or return of middle ear problems after surgery

Ossicular chain reconstruction is performed while the patient is asleep under general anesthesia to ensure comfort and safety during the procedure. The surgeon typically works through the ear canal or a small incision near the ear, and places a tiny medical implant if one or more of the hearing bones need to be replaced.

Recovery after ossicular chain reconstruction can take some time as the ear heals. Hearing improvement may happen gradually and can take several weeks as swelling goes down and the ear adjusts after surgery.