Caraleigh,

Bone scans show different results depending on how long a person has had CRPS. My understanding is the further out it goes the less likely it is that a bone scan will show positive. Just to muddy the waters, Keep in mind that bone scans also show things other than CRPS and findings such as bone marrow edema on MRI can be CRPS or can be something else. No test is definitive. CRPS is a clinical diagnosis of exclusion, reached when everything else has been ruled out.

IMHO, the most important thing about testing and imaging is making sure that there is no other reason for the pain. Nerves are easily aggravated and compressed. Mechanical issues with the foot can lead to many nervy symptoms simply through swelling. And CRPS can be caused by a treatable pain contributor. Finding if there is one can be a game changer as far as being able to achieve remission.

I hope you are able to find what you need quickly. Aim high. It is absolutely worth it.