what is up with my calf?

i've googled and can't come up with anything so teh trg must have the answer. long and short of it is i can't flex my medial gastrocnemius in my left leg. activates just fine when i do calf raises but absolutely nothing when i try to flex it, whereas the lateral side contracts just fine. been like this for as long as i can remember and as far as i know, no injury precipitated it. i don't think it is necessarily a problem, more a curiosity. so, what say the dentists? lop it off below the knee and call it good?

I don't get it--by flexing I assume you mean plantar flexing your foot, the same action as calf raises which you say you can do fine. (The opposite action, bending the foot towards the sky would be called plantar flexing, which is done by the anterior tibial m,). Unless I'm misunderstanding your post, you don't have a problem. Maybe what you're saying is that the medial muscle doesn't get hard when you try to contract it. Doesn't matter, as long as the muscle works--doing calf raises. Remember that there is also the soleus plantar flexing the foot.