Last year I saw rutting behavior on the very last day of January. It was a fast and furious and the middle of the month, but the bucks were still around the does.
What kind of knee surgery did you have? I have had 4. Two ACL replacements and two scopes. My first ACL was in June of '00 and I was hunting elk by September. My second ACL was in May of '03 and then had my knee scoped again on July 31, 2003 and I was able to hunt elk again in September, but that was really rough and frustrating. The knee was still pretty sore and weak.