First of Wejo you need to find out what cause the stress fracture in the first palce, a locust didn't bite your navicular on a tempo run. It could be biomechanical to metabolic, you never know.
Most people on this board probably are gonna figure out what I'm gonna say next, but the fact you've had a lot of foot injuries tells me your peroneals are extremely tight. This could be caused by strength/tightness problems all the up to and including your back and back down again. As far as running is concerned, once you get back and your on the track, think toes UP, not down like a damn ballerina. Look at the Canova post over Christmas as to why Bekele is soo successful.
You need to spend $19.95 on a myofascial release foam roller (the black ones). Also I would talk to Cornell's strength coach and get into a good strength program. I don't give a rat's ass if your a 10k/Marathon guy, you're human and humans can always be stronger regardless of how much miles they run a week. If you think running gives you plenty of strength I got sub-tropical condomiums to sell you on top of Mt. Humphreys.
You may be the fastest American 10k guy without a shoe deal but the fastest debut was by an Alan Webb, who last time I checked was a miler you lifts alot and THE RIGHT WAY. And at that meet he beat Ritz, who last time I checked still looks like he is in junior high and specializes in the 10k. Hicham looks like a 12 year old too, and peaked out at a 265lb squat (~120kg). THe reason Geb had to stop running track and got his achilles injury is because ("I have not gotten in the gym enough, I have been too busy with my business.") And no, you will not gain weight and it will NOT hamper your recovery, promise. The first 2-3 weeks of real back squats are gonna probably suck, man up and after that, if everything is done CORRECTLY you'll be forever healthy. Start with dumbells and progress to back/front parallel then as deep as you can go. Trust me.
I don't wanna agree with trackhead, because he has no real knowledge of physiology (and I'm not amazing either), calling your proprioceptors (Golgi Tendons/Muscle spindles) proproceptors and other nonsensical crap, but he is right on the fact that if we needed orthodics and all these huge pillow midsoles, these indigenous tribes all over the world would not be thriving for 1,000's of years. Unless you have a skeletal defect (which is possible) in your talar joint some myofascial release and glute activation/proper strength training with good technique along with your therapy will make it all better for good.
Want an opinion on your foot? Nail it and get it over with, saddle up and get back to it man, before you get a complex I am am battling from shitty coaching for 4+ years.
Need anything else e-mail me, ask Nobby.