I usually use my diagnostic ultrasound to determine if the band is torn. A MRI is moreclear and certainly more comprehensive, but a whole lot more expensive too. Usually it involves sending the patient elsewhere and it usually takes about 45 minutes for the MRI of the foot.
I would use a MRI if (a) I don't have a ultrasound machine and (b) I need to see the depth of the tear.
Immobilization is always indicated. If there is any motion allowed, pain persists. I do not allow the patient to take the cast boot off other than for a quick shower. They must sleep in it. If there is any complaining, I remind them I can always put a fiberglass cast on. The length of time vaires with the patient but usually 6-8 weeks.
Since I don't have any info on your particular problem, I really can't give you any more information than the generic stuff. Hope it helps.
In Reply to: Plantar Fasciitis posted by Anna on April 27, 2005 at 17:19:36: