I have had intermittent burning lateral plantar pain in my left foot which has gotten progressively worse for the past few months, to the point where it was difficult to walk on it (the pain occurs on push-off). It seems to have started with a new pair of cross-trainers which I quickly stopped using. The tender area extends from the anterior aspect of the heel a couple of inches into the arch. I have had PF in that foot, but the pain was nearer to the instep . Xrays are normal, and MRI shows only “mild edema of soft tissues adjacent to distal fifth metatarsal,” and no problem with the peroneal tendon. The pain is pretty much totally relieved wearing an Aircast walker, which I am currently doing. Any ideas about what could be causing this? Thanks.
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