An experimental study of skintransplantation on irradiated bed using tubed pedicle flaps.
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When surgical procedures were performed on the irradiated tissue, the incidence of complications were more frequent than in normal tissue. And consequently transplant on to irradiated tissue is rather difficult. The author performed an experiment using 84 sides of rabbit's ear to determine the appropriate of reconstruction time after irradiation.<BR>X-ray irradiation was performed on the external side of the car, the dosage of irradiation was 3, 000 R. Each 1, 3 and 9 weeks after irradiation, the tubed pedicle flaps, including the middle branch of the posterior aulicular artery and vein, size of 1.3×4cm, were raised and transplanted on to the irradiated field.<BR>Each 3rd, 7th and 21st days after transplantation, the pedicle flaps and recipient area were observed macroscopically and microscopically. The vascularization was investigated by means of acryl plastic injection methods.<BR>No necrotic area was found on the flaps transplanted on to the normal area. The group transplanted at 3 weeks after irradiation, had the worst ratio of aliving flaps. The next was at 9 weeks, the best was the group at 1 weeks after irradiation.<BR>The vasculary recovery after performance of surgical procedures, was the best on the groups transplanted at 1 week after irradiation. The next was 9 weeks, the necrotic areas of the flaps was at 9 weeks.<BR>The author judged the appropriate time for reconstruction, at the clinic is the time of subsided acute inflammation, since "the time of one week after irradiation" already expired at the time of completion of the treatment, the author judged that "nine weeks after irradiation" was a desirable period for reconstruction.
- 社団法人 日本口腔外科学会の論文
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- An experimental study of skintransplantation on irradiated bed using tubed pedicle flaps.