Summary.Exposure to radiation over many years increases the incidence of cataracts and promotes the development of carcinoma of the thyroid gland. A prospective study of 24 operative procedures involving minimal invasive techniques and fluoroscopic guidance was undertaken in order to measure the radiation exposure to the primary surgeon. The study was conducted during 8 K-wire osteosyntheses in fractures of the distal radius, 8 closed interlocking intramedullary nailings in fractures of the femur and 8 internal fixator procedures, with or without posterior autogenic transpedicular bone grafting, in fractures of the lumbar spine. Radiation was monitored with the use of high sensitive thermoluminescent dosimeters. Fluoroscopy was necessary during the procedures, with exposure times ranging from 55 s to 12 min 35 s. The radiation dose received per procedure ranged from 0.6–259.3 μSv and was well within the dose limits set by German law.Résumé.Une étude prospective de 24 interventions chirurgicales utilisant une technique invasive ”à minima” avec l’assistance de la radioscopie a été realisée pour mesurer l’exposition aux radiations de l’opérateur principal. L’étude e été realisée durant 8 ostéosynthèses avec des broches de Kirschner pour les fractures du radius distal, 8 enclouages intramedullaires verrouillés de fractures du femur et 8 fixation internes avec ou sans greffe de fractures de vertébres lombaires. L’irradiation était enregistrée avec des dosimètres thermoluminiscents très sensibles. Durant les interventions la radioscopie était necessaire entre 55 secondes et 12 minutes 35 secondes. La dose de radiation enregistrée par intervention était entre 0,6–259.3 μSv. Ces valeurs etaient bien conforme à la réglementation allemande sur la protection contre les radiations. L’exposition aux radiations pendant des années peut prèdisposer à l’apparation d’une cataracte et peut produire le development d’une carcinome de la grande thyroide.
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