| | Irradiated Homologous Rib Grafts
As per Modern Medicine Community:
"Irradiated homologous rib grafts are safe for use in rhinoplasty, but should be avoided when patients require a shield graft, according to a study in the March/April issue of the Archives of Facial Plastic Surgery.
Dirk J. Menger, M.D., and Gilbert J. Nolst Trenité, M.D., of the University of Amsterdam in the Netherlands conducted a study of 66 patients who underwent 177 irradiated homologous rib grafts over a period of nine years, and who were followed up for an average of 51 months.
While moderate resorption was observed in 55 grafts (31 percent), complete absorption was seen in one graft, the researchers found. The main characteristic of resorption was loss of support function rather than loss of volume, a phenomenon the authors attribute to grafts being replaced by fibrous scar tissue. Furthermore, the authors note, moderate resorption had a negative clinical outcome in the case of shield grafts only.
"Complete resorption requiring revision surgery was uncommon," the authors write. "For most types of nasal grafts, moderate resorption did not negatively influence the functional or aesthetic result. However, in cases of moderate resorption of irradiated homologous rib shield grafts, there was loss of nasal tip definition and nasal tip projection. In cases in which a shield graft is a clinical necessity, we recommend the use of autogenous auricular cartilage grafts."