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Lower auricular malformations: their representation, correction, and embryologic correlation.

C Park1

  • 1Department of Plastic Surgery at Yonsei University College of Medicine, Seoul, Korea. Chulpark@yumc.yonsei.ac.kr

Plastic and Reconstructive Surgery
|December 22, 1999
PubMed
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This study analyzed 77 lower auricular malformations in 74 patients, finding cleft earlobe most common. These malformations may offer insights into human ear development.

Area of Science:

  • Plastic Surgery
  • Developmental Biology
  • Otolaryngology

Background:

  • Lower auricular malformations present a spectrum of congenital conditions affecting ear aesthetics and function.
  • Understanding the embryological origins of these malformations is crucial for effective surgical correction.
  • Previous research has focused on various auricular deformities, but a comprehensive analysis of lower auricular anomalies is needed.

Observation:

  • A review of 77 lower auricular malformations in 74 patients over six years identified earlobe deformities as the most prevalent (77.9%).
  • Cleft earlobe was the most frequent subtype (63.6%), with four variations detailed.
  • Major lower auricular malformations included question mark ear, ectopic anthelical fold, and lower conchal stria, each occurring in 6.5% of cases.

Findings:

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  • Complex earlobe malformations were successfully treated using fabricated costal cartilage and expanded skin flaps.
  • The study proposes a correlation between specific malformations, such as cleft earlobe and ectopic anthelical fold, and early embryological development.
  • It is hypothesized that hillocks 1 and 6 contribute to earlobe formation, while hillocks 4 or 5 form the anthelix or helix.

Implications:

  • The findings suggest that certain "clefting" ear malformations can serve as indicators for understanding human auricle embryogenesis.
  • This research provides a basis for further investigation into the developmental pathways of the human ear.
  • The study contributes to the surgical management strategies for lower auricular malformations.