Outcome and Prognosis
Ear reconstruction with autogenous cartilage grafts is well received by patients with microtia. The success of outcome depends greatly on preoperative planning. Placing the auricle in a symmetric position with respect to the facial landmarks and obtaining symmetric projection from the skull are of paramount importance for optimum outcome. The skill and patience of the surgeon in planning and executing this operation determine its success, barring complications.
Reoperation for symmetrical ear positioning
Though discussed above in the section on treatment of auricular dystopia, a final comment seems appropriate regarding the proper positioning of the reconstructed ear. One of the areas of greatest concern to patients seeking further microtia reconstruction is the malposition of the reconstructed ear.
Typically, the ear is positioned anterior and inferior to its normal counterpart (as well as rotated from a normal axis). Some patients may present with dystopia and an incomplete reconstruction and need both correction of dystopia and additional staging of surgeries. Each case needs to be assessed for the extent of surrounding scarring and the distance of movement that is necessary for optimal symmetry. The rich vascular supply in this area will allow a reasonable amount of elevation and movement of the reconstructed ear, but a wide enough pedicle needs to be maintained (with at least as much attachment as is seen at the second stage ear elevation in the routine microtia reconstruction) to avoid vascular compromise. The movement often requires interposition of a skin or fasciocutaneous flap from behind the dystopic auricle to fill the defect anterior and medial to the ear, as is needed in the early transposition of the vestige discussed above.
Each case must be carefully assessed. Certainly, some patients must be counseled that the risk of distortion or loss of the reconstructed ear does not warrant the risk of this movement. They should also be aware of the additional scars that will result from the transposition of skin anterior or inferior to the repositioned auricle in cases where the anterior skin is not lax enough to allow advancement back to the newly-positioned ear. Some patients, while unhappy with the ear position, may not be willing to accept these additional scars, and the surgeon should then counsel acceptance of the current deformity.
Future and Controversies
Building on lessons from the past, today's surgeons have decreased what was a 4-stage operation in the 1950s to a 2-stage reconstruction today. As lessons learned today are applied, even more realistic reconstructions can be expected from future reconstructive surgeons. In the future, tissue engineering and newer alloplasts may replace autologous reconstruction; however, they must measure up to the criterion standard set by autologous reconstruction.
Final thoughts
Successful staged reconstruction of the ear, whether for microtia or major acquired ear deformities, requires meticulous attention to all aspects of the available auricular and donor tissue and the soft tissue environment surrounding the planned reconstruction. Whether one chooses to follow a Nagata, Firmin, or Brent model for the initial microtia reconstruction, careful attention to the vascular supply of the skin flaps minimizes the risk of flap ischemia and cartilage exposure. With considerable variation in auricular remnants, meticulous planning is perhaps the most important factor in reducing complications.
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References
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Further Reading
Keywords
ear, microtia, ear microtia, hypoplasia of ear, auricle, auricular vestige, microtia pictures, ear microtia pictures, ear pictures, ear surgery, ear reconstruction, birth defect, ear development, ear repair, ear creation, ear plastic surgery, congenital ear defect, small ear, ear microtia surgery, microtia treatment, ear treatment, external ear, external ear surgery, external ear microtia, external ear reconstruction, auricle reconstruction, prosthetic ear, autologous reconstruction, autologous framework, bone-conduction hearing aid, hearing aid, microtic vestige, prosthetic carving, carving technique, cartilage framework, lobule rotation, conchal excavation, tragus formation, pinna elevation, classical microtia, atypical microtia, classical remnant, atypical remnant, ear remnant, auricular remnant, concha, antihelix, tragus, antitragus, dystopic remnant, distraction osteogenesis, auricular dystopia
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