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I recently saw a tv program (Newsnight, BBC) which did a piece on bone necrosis in people who work or worked under compressed air conditions. They started off by looking at men who worked on various tunneling projects in the 40s-60s. They did a working shift spent at slightly elevated pressures. Many were bent whilst being decompressed at the end of their shift (due to poorly trained operators) and were treated overnight in a chamber in time for the next days shift. Many of the men are now suffering from bone necrosis. They also looked at a commercial diver with 20 years of experience who also showed symptoms of bone necrosis.It was stated that modern thinking blamed the occurrence of bone necrosis on working under a compressed air atmosphere and not on the accumulated effect of DCS. Does any body know any more about this? What is the effect on sport divers and more importantly what is the effect on tech divers who rack up a lot of deco? Ian Horsfall Oceanography Labs. Liverpool University imh@li*.ac*.uk*
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