I generally treat plantar fasciitis with ultrasound, joint mobilizations and exercise. If it is real pesky, I will use iontophoresis (medication) at the end.

Find a good PT that uses manual therapy and what I mentioned.

E-mail me if you have questions.
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Tony Partlow Shogen-Ryu Karate-Do Minamoto Shibu Dojo http://martialartsfriends.com/Shogen