No I never have heard of this, CTS has to due with compression on the median nerve in the wrist. You can have a neck injury or disc problem in the neck that can mimic carpal tunnel syndrome symptoms...
You should ask the doctor, but I have Chiari 2 and it was caused by Spina Bifida. Chiari 1 is also something that develops while the baby is unborn. So I don't think either type can be caused by a...