I have had issues in the past with self-diagnosed achilles tendonitis. I recently have realized that I in fact have the deformity in the title and this is the root of my problem.
http://www.foothealthfacts.org/foota...-deformity.htm
When I joined the Army all the issue boots I tried on were either so big my feet flopped around inside of them or if they fit the rest of my fit properly they were horribly painful on my heels. At CIF at reception I was finally told to pick a pair and that the heel cup would break in. I did and after two days the heels of my boots were blood soaked and I had blisters three levels deep and that was just from standing in lines at reception.
My life saver was my dad who mailed me a pair of winter boots he had sitting around from a previous deployment. The extra padding made them wearable and I went the rest of training with only minor blisters, although I did have an achilles issue for a week or two.
After I got out of training I bought some bates boots in my normal length but extra wide. I have narrow feet. I added heel pads and the combination of elevating my heel and wearing boots way too wide kept me from having heel problems. Of course the rest of the boot is too big, so I had to lace below the ankle extra tight and tie it off there to try and keep my foot in place, and again at the ankle.
This pretty much works, but I have found on ruck marches I just can't lace it tight enough to keep my foot in place and I get blisters on my toes and a few other locations after a while.
I am currently planning on going to sfas as soon as allowed by my deployment schedule and am trying to square away my boot situation. I have a pair of garmont T8's that I removed the heel cup from. I am starting to break them in and so far can go about 4 miles at a 12:30 pace, which includes jogging down hills without getting any hotspots. It looks like this might be my best option and I am going to try some longer distances with them ASAP.
I was just curious if anyone here has any experience with this issue, or any ideas for a solution that would allow me to keep a heel cup. Google and searching this site turned up pretty much nothing useful on this heel shape when it comes to military boots.