: 4 years is a long time to be suffering with plantar fasciitis! Occasionally, the plantar fascia can be cut which would release the stretch and relieve your pain.
: 8 weeks of non use **should** have helped considerably with your pain.
: I think that you should look for more options. Have MRI's been done? Get another opinion or two or three. Someone in your area should be able to help you.
: Good luck!