I know what you're talking about, I have had 2 MRI's both time the same result "all ligaments are intact". I went to physio therapy and before he even touched me, he noticed that my calf was discolored and swollen and HARD. He told me to go for an ultra sound, to which it revelaed I had a blood clot in my calf. The only reason I had one was because I didn't move my leg alot, therefore I developed a clot. If you are moving it and circulating it, I'm sure there isn't a clot for you with the tenderness in your calf. I would suggest going to physio therapy and getting their advice. My physio therapist saved my life, had he worked on my leg while I had a clot, he would have dislodged it and it would have passed through my lungs into my heart. That's the best advice I can give you, don't take my advice, just listen to it, it may help. Good luck!