Hi, there are plenty of people in the general public who have high arches, flat feet, one of each, normal arches. So that alone does not say that you have a type of CMT. The fact that your EMG/NCV testing was normal tells me that you do not have CMT1 or CMT2. In CMT type 1, nerve conduction speed is slowed. In CMT type 2, the nerve conduction speed is usually normal or mildly slowed but the responses to the stimulus are small. If you have a muscle disease, the nerve conduction speed remains normal. The second part of the test determines the ability of your muscles to respond to electrical impulses supplied by the nerves.

I hope you find the answer. Take care.