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Journal of the Korean Society of Plastic and Reconstructive Surgeons 2001;28(1):1-6.
Published online January 1, 2001.
Growth Effect of the Chest Wall after Costal Cartilage Harvesting for Correction of Congenital Microtia.
Seok Kwun Kim, Jae Jung Han, Si Hyun Park, Jeong Tae Kim
Department of Plastic & Reconstructive Surgery, College of Medicine, Dong-A University.
The rib cartilage has been the most popular autogenous tissue for microtia reconstruction. Donor site complications, especially chest wall deformities occurring after harvest of costal cartilage graft are presented and discussed in many reports. In this study, 100 chest donor sites were evaluated in 34 patients (25 male and 9 female) who underwent costal cartilage grafts for microtia reconstruction from 1992 to 1999, and reviewed for donor site complications by radiography and physical examination. Ribs from which costal cartilage had been harvested showed increased inward bowing on radiographs in 38 of 100 donor sites; the upper ribs record a higher incidence of deformity than lower ribs. The frequency of rib deformity in donor site was 21 percent when cartilages were harvested from patients older than 10 years of age, whereas it was 73.3 percent in patients younger than 10 years. This difference was statistically significant. In our study, the incidence of chest wall deformity was 57 percent, concerning donor site morbidity after the supraperichondrial rib harvesting procedure, whereas it was 35 percent in patients after the subperichondrial rib harvesting procedure. In conclusion, surgeons should consider the possibility of thoracic deformity when planning costal cartilage grafting. To avoid these deformities, costal cartilage harvesting should be made at lower levels of the rib cage, and delayed operation time for thoracic maturation is recommended. More care should be taken to preserve the perichondrium and the germinative zone of the costochondrial junction.
Keywords: Microtia; Reconstruction of auricle; Chest wall deformity
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