Immediate ear reconstruction by superficial temporal fascia flap combined with avulsion auricular tissue / 中华整形外科杂志

Objective@#To explore the application and effect of superficial temporal fascia flap combined with avulsion auricular tissue in emergency auricular restoration.@*Methods@#From June 2015 to December 2015, 6 patients with auricular large area complete avulsion were underwent treatment in Department of Plastic Surgery of General Hospital of Shenyang Military. After thorough debridement, the auricular cartilage scaffold of the avlusion ear and skin was completely stripped. The auricular cartilage was repositioned on its anatomical site and subsequently covered by superficial temporal fascia flap. The free skin was stripped as full-thickness graft to cover the surface of reconstructed ear.@*Results@#All 6 patients with auricle large area complete avulsion achieved immediate repair under emergency condition. The operations were successfully completed and the ears were healed primarily. The patients were followed-up for one year. Five patients with partial auricular avulsion achieved obvious reconstructed auricle profile. The color of reconstructed ear was close to the surrounding skin and the cranioauricular angle was nearly normal. Patients and their families were very satisfied. One patient of total auricular reconstruction had auricular contracture. The auricle profile was not obvious with small size, morphological changes and external auditory canal stenosis.@*Conclusions@#Avulsion auricle and temporal superficial fascia flap can be used to repair partial auricle defects as a first-stage repair with ideal results. It is the best choice for large auricle defects in emergency cases.

A dinicai study of 27 cases with suppurative perichondritis of auricle / 中国基层医药

ObjectiveTo investigate the methods of treatment and effect in suppurative perichondritis of auricle.Methods27 cases with suppurative perichondritis of auricle were mentioned with sensitive antibiotic treatment in the whole and partly of the body.Carve and extradite the cases of abscess till entire debridement.ResultsAfter follow-up for 6 to 12 months,all 27 cases of auricles were preserved without feeling of causalgic.The efficient rate was 100％.Although 5 cases of auricle's shape were shrinked,the others preserved a good shape of auricle.The relief rate was 81.5％.ConclusionThe effective way of treating suppurative perichondritis of auricle was using sensitive antibiotic and entire debridement.

The Effect of Various Methods of Cross-linking in Type I Collagen Scaffold on Cartilage Regeneration

PURPOSE: Collagen is the principal structural biomolecule in cartilage extracellular matrix, which makes it a logical target for cartilage engineering. In this study, porous type I collagen scaffolds were cross-linked using dehydrothermal(DHT) treatment and/or 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide(EDC), in the presence and absence of chondroitin-6-sulfate(CS) for cartilage regeneration. METHODS: Cartilage defects were created in the proximal part of the ear of New Zealand rabbits. Four types of scaffolds(n=4) were inserted. The types included DHT cross-linked(Group 1), DHT and EDC cross- linked(Group 2), CS added DHT cross-linked(Group 3), and CS added DHT and EDC cross-linked(Group 4). Histomorphometric analysis and cartilage-specific gene expression of the reconstructed tissues were evaluated respectively 4, 8, and 12 weeks after implantation. RESULTS: The largest quantity of regenerated cartilage was found in DHT cross-linked groups 1 and 3 in the 8th week and then decreased in the 12th week, while calcification increased. Calcification was observed from the 8th week and the area increased in the 12th week. Group 4 was treated with EDC cross-linking and CS, and the matrix did not degrade in the 12th week. Cartilage-specific type II collagen mRNA expression increased with time in all groups. CONCLUSION: CS did not increase chondrogenesis in all groups. EDC cross-linking may prevent chondrocyte infiltration from the perichondrium into the collagen scaffold.

Anthropometric Growth Study of the Auricle in Korean / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES: Knowledge of the postnatal growth of ear is decisive in determining the optimal time for ear reconstruction and planning the morphology of an artificial ear. However, basic population studies have not been carried out in Korea and the dynamics of ear growth and the age of maturation have not been clearly determined and established. The aim of this study was to establish the age of ear maturation and to help determine the optimal time of ear reconstruction for Koreans. SUBJECTS AND METHOD: From June 2000 through February 2001, we measured facial length and the 3 lengths of the auricle, i.e., length, width, the distance between the two insertion points of the auricle and facial length in 950 Korean subjects between the ages of 0 to 18. RESULTS: The auricle length reached 90% of its mature size at 14 years and width at 15 years. The distance between the two insertion points of the auricle was not significantly different in this study. CONCLUSION: The length and width of auricle reached 90% of the adult size at the age of 14 and 15, respectively. Therefore, when performing auriculoplasty, consideration should be given for auricle growth up to the age of 15 years.