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Scott, One thing to kep in mind with a joint surgery. Is the probability of inflamation during the dive due to the stress placed on the joint. In considering this scenario the ability of the tissue to off gas can change during the course of the dive. I have several chronic problems of his nature, knee injury, cootes chondrites, and carpal tunnel. The knee is easily controlled by a knee brace so I don't usually worry about that. The others I have had for a long time and after consultation with several dive docs have taken a conservative approach in terms of my decompression. But not necessarily dive profile. I typically add 10% or 2 min ( which every is great to my 30' and 20' stops) and 10% or 5min to 10' stop. 20' & 10' are on O2. Since these conditions have developed I've had 250-300 decompression dives with no problems. I would recommend that you try a conservative approach at the start to see how your body reacts. Curt At 4:29 PM 9/19/95, Richard Pyle wrote: * > This is exactly the same story I've heard, but when I talked to my surgeon * > about it, he smiled and sayed, 'so if the circulation is poor, what effect * > will that have on the ongassing rate?' I started thinking about it and could * > see his point; all things being equal, both ongassing and offgassing rates * > will be effected by poorer circulation. I guess the question then becomes, * > is scar tissue a 'new' compartment, or are their other tissues just as slow * > or slower? * * I followed this exact line of reasoning with my bends doc. He convinced * me that the tissue was slower than anything accounted for by existing * models (he may have just been BSing me for, at the time, he was on a * quest to convince me to never dive again). My digestion of it was to * avoid "slow tissue" profiles (i.e., deep dives on many days in a row, * long dives to moderate depths, high exposures to helium, etc.). Lately, * I'm not sure what to believe. * * Rich * -- * Send mail for the `techdiver' mailing list to `techdiver@terra.net'. * Send subscription/archive requests to `techdiver-request@terra.net'. Curt W. Smitka Phone: (313) 747-0252 Administrative Manager Fax: (313) 936-8620 Reproductive Sciences Program Email: cwsmitka@um*.ed* University of Michigan 1109 300 North Ingalls Bldg Ann Arbor, MI 48109-0404
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