I think I may have MT as
I think I may have MT as well. Looking at my feet, it looks like my 2nd met is about the same length if not slightly longer than the 1st. Anyway, I haven't noticed any real problems with asphalt or anything (which is where I do most of my running and I have been running almost exclusively barefoot since mid-June). The one thing I think might be related to MT after reading the OP is that after my 1/2 marathon (well, really during the 1/2...after a section of about 3-4 miles that was on really rough pavement including old, uneven, worn bricks), I did start getting a pain in my left ankle (inside/medial between achilles and ankle bone, which I was told might be the peroneal tendon). I also have noticed callouses on my 2nd and 3rd toes, but mostly on my right foot (which isn't having the ankle pain). One other thing in relation to the possible peroneal tendon pain in my left ankle...I notice whenever I flex my toes...esp. the 2nd met (I can't really flex that one by itself, but if I hold it while flexing the rest of my toes), the pain is usually more intense. I have finally started laying off running for a few days, and I am hoping that helps. But now that I'm trying to lay off running, I find myself wanting to get out there and run more...I'm jealous of my friends who are able to get out there and run...and I really don't like running.
Anyway, does it sound like the pain that I am having might be MT related?
Also, don't know if this might be related to MT or not, but another thing that I have noticed since I have been running barefoot is that first thing in the morning, my heel kinda hurts, but as I walk around for a few minutes, it always feels better and doesn't bother throughout the day. I'm thinking that might just be a problem with tightness and I probably need to keep using my rolling pin to roll out my calves, but I am usually too lazy to do that (not too lazy to run and do other physical activity though).
(Edit)... Well, after being told by a friend (who is in currently taking anatomy & physiology and majoring in exercise science ) that it sounded like the peroneal tendon, I did a little more research (since I am not up on my anatomy anymore...it's been years since I've taken classes like that), and I realize that it can't be the peroneal tendon since that runs on the lateral side of the ankle. I guess it is more likely the posterior tibialis (which I think someone from BRS previously mentioned in one of the forums) and/or the flexor hallicus longus/flexor digitorum. Anyway, could MT also affect these tendons? Prior to reading the OP about MT, I was thinking it was just overuse and/or a change in gait while running those few miles on extremely rough pavement, but looking at my feet and toes, I think I might have a "slight case" of MT. No big deal though...didn't have any problems the first 4 months of BF running on pavement...just looking forward to when my ankle stops hurting and I can continue running without worrying about injuring myself more. I can currently run through the pain since it doesn't really hurt that bad while running, but I decided to try not to chance it...but knowing me, I'll probably start back up sooner than I should...esp. since a race I want to do (5K) is coming up on Saturday.