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Dysbaric osteonecrosis screening in submarine escape instructors
Senol Yildiz1, Cagatay Cimsit, Akin Savas Toklu
1Gülhane Military Medical Academy Haydarpasa Training Hospital, Department of Underwater and Hyperbaric Medicine, Istanbul, Turkey. syildiz@gata.edu.tr
Introduction:
Dysbaric osteonecrosis (DON) is an avascular bone necrosis that can be seen in divers and compressed air workers. Submarine escape instructors constitute a specific group who are exposed to hyperbaric conditions with a constant profile.
Methods:
We screened 21 Turkish Navy submarine escape instructors and evaluated 147 skeletal radiographs for dysbaric osteonecrosis. Two instructors who had suspicious DON lesions on the X-rays underwent examination by MRI of the suspected sites.
Results:
We found no evidence of DON in the radiographs and MRIs of the submarine escape instructors.
Discussion:
We concluded that the risk of DON is very low for submarine escape instructors who work at the Submarine Escape Training Tower (SETT) at a depth of 60 ft and who strictly obey the decompression rules.
