If the reconstruction is ultimately successful, it is easy to remove the percutaneous BAHA abutment. If the surgery is unsuccessful, the abutment can be replaced and the implant re-activated to restore hearing. External ear
The age when outer ear surgery can be attempted depends upon the technique chosen. The earliest is 7 for Rib Cartilage Grafts. However, some surgeons recommend waiting until a later age, such as 8–10 when the ear is closer to adult size. External ear prostheses have been made for children as young as 5. For auricular reconstruction, there are several different options:

Rib Cartilage Graft Reconstruction: This surgery may be performed by specialists in the technique. It involves sculpting the patients own rib cartilage into the form of an ear. Because the cartilage is the patients own living tissue, the reconstructed ear continues to grow as the child does. In order to be sure that the rib cage is large enough to provide the necessary donor tissue, some surgeons wait until the patient is 8 years of age; however, some surgeons with more experience with this technique may begin the surgery on a child aged six. The major advantage of this surgery is that the patients own tissue is used for the reconstruction. This surgery varies from two to four stages depending on the surgeons preferred method. A novel one stage ear reconstruction technique is performed by a few select surgeons. One team is able to reconstruct the entire external ear and ear canal in one operation.
Reconstruct the ear using a polyethylene plastic implant (also called Medpor):  This is a 1–2 stage surgery that can start at age 3 and can be done as an outpatient without hospitalization. Using the porous framework, which allows the patients tissue to grow into the material and the patients own tissue flap, a new ear is constructed in a single surgery. A small second surgery is performed in 3–6 months if needed for minor adjustments. Medpor was developed by John Reinisch. This surgery should only be performed by experts in the techniques involved. The use of porous polyethylene implants for ear reconstruction was initiated in the 1980s by Alexander Berghaus. Ear Prosthesis: An auricular (ear) prosthesis is custom made by an anaplastologist to mirror the other ear. Prosthetic ears can appear very realistic. They require a few minutes of daily care. They are typically made of silicone, which is colored to match the surrounding skin and can be attached using either adhesive or with titanium screws inserted into the skull to which the prosthetic is attached with a magnetic or bar/clip type system. These screws are the same as the BAHA (bone anchored hearing aid) screws and can be placed simultaneously. The biggest advantage over any surgery is having a prosthetic ear that allows the affected ear to appear as normal as possible to the natural ear. The biggest disadvantage is the daily care involved and knowing that the prosthesis is not real.