I know of a PJ (USAF Pararescueman) or CCT (Combat Controller that this happened to "twice"......he couldn't cutaway and did a PLF into a Florida swamp..... took him months to heal up and recover. Then it happened again. He lived through the second accident which I believe was a water jump.
I'll have to search for the report but I think I have it here somewhere..
Spectr17 do you remember hearing about this in the late 80's I believe....???
as glock would put it YARK!