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David Giddy writes:
> 
> 	[Is this problem] discussed in mix classes and whether there are any
> 	statistics about its occurrence rates in the technical diving
> 	community?

My understanding is that dysbaric osteonecrosis has not been
documented in divers outside the commercial environment, and that it
is not a risk to be worried about in conservative diving.  My
personal, non-expert hypothesis is that the folks getting this are
doing a lot of Sur-D and minimal decompressions and hence end up with
heavy asymptomatic bubble loadings after their working dives.

I've not seen the report you mention about dysbaric osteonecrosis
occuring after a single dive: could they have mean it *could* occur
after single dive, or did they actually have controlled data on a
person with no other risk factors suffering DO after a single dive?

Cheers,

David Story                        NAUI AI Z9588, PADI DM 43922, EMT
story@be*.wp*.sg*.co*		   Oxygen is a drug in California.

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