You'll most likely have to wait until 3rd or 4th year considering the first 2 years of pod school are pretty much all basic science anyway. I don't think its the norm for 3rd or 4th year pod students to complete non-american/canadian externships but I could be wrong. I read that the trip offered by Scholl to Ho, Ghana was a week long.
I believe these mini fellowships focus on trauma and are 1-2 or 1-3 months in duration and available in a number of countries around the world (good number in Western Europe). I read that these fellowships are mainly for orthopedic/general surgeons but will accept podiatric surgeons as well.
"DpmGrad" participated in one of these fellowships so he would be the best person on these forums to get more info. I found a link online that pertains to the AO/ASIF fellowships:
http://www.aofoundation.org/portal/..._att/wor/act/fellow/fellowship_broschuere.pdf
There's always organizations such as "Baja Project for Crippled Children" where pods (maybe residents too) can treat patients outside the US (I read Honduras and Mexico so far). Another one is the "Podiatry Institute" which has gone to Vietnam, Guatemala, and El Salvador I believe. Doctors without Borders (MSF) is one type of organization but does not accept podiatrists currently.