I found the case history floating in the main files, it's now where it should be: https://ecir.groups.io/g/CaseHistory/files/Anne%20and%20Nemo.

There are a couple of things I can see in the case history that could be issues, but as Dr. Kellon said the main issue is the bone infection and bone loss in that foot and the resulting tendon contracture.  I'm guessing that's what you're referencing when you say the vet wants to "treat the tendon"?