V-Sorry to hear the tests didn't give you the info you want. (i had an x-ray on my knee @ the hospital & it didn't show anything..It wasn't until the MRI that i knew what was up)

I bet you'll be seeing a good physio anyways & they might just be able to give you the answer you seek. Ensure you do all the exercises they give you and it'll get you on the road to a happy 300k ride.

btw...are you thinking of experiencing the Tri world...A lady from SF came over to do the Rottnest Swim this year & she runs open water swim sessions in SF..i'll post the link when i get home tonight.

C