I have pttd and tendonitis in my left foot from rigid flat feet. i wear a custom brace, which helps. am i a candidate for prp?

No: Prp has been used in a number of situations to help heal tissues. When you have a rigid deformity prp will not restore the motion and regeration of the tendons will not improve your situation. A custom brace such as an ankle foot arthosis or arizona brave are non-operative options. Operative treatmetn would consist of a hindfoot fusion.

Probably not: Due to the construct of your foot I do not think prp will help.

PRP : Prp has been controversial because it may or may not have a direct benefit for arthritis or posterior tibial tendon, although there are some clinical studies that show a benefit, there are just as many that show no clinical benefit. For someone with rigid flatfoot, there would be little to no benefit for your deformity. Lastly, i know of no insurance coverage for prp.

Maybe not: PRP will help to heal any sort of degeneration or injury. However, a rigid deformity will probably not respond to prp.