Hi again, it does biomechanical if that's the right word, seeing you only have problems standing up walking sorta thing, i would push for an MRI of your spine at least, shouldn't be to hard [ i hope] to convince them that PN can come from pressure on the spinal cord.

It does sound pretty tough to get things done over there but anyway I found this Koreon Neurological Association site that MAY be able to put you on to a good neuro at least, if that's possible at all. http://www.neuro.or.kr/eng/contact.html

In answer to my PN, it was caused by prediabetes and low b12, it was caught early by a PN expert, which over 4 years only took a change of diet [no sugary carbs] and exercise and plenty of b12/ multi B & vit C as well.
good luck with it anyway,
Brian