According to WHO, there are around 350 millions diabetic patient worldwide, and estimate that diabetes will be the 7th leading causes of death in the year of 2030. Diabetic neuropathy is one of the significant symptoms that often obsess diabetic patients. However, the factors that cause diabetic neuropathy are complicated. This study will approach the problem from bio-mechanics point of view by apply in situ circular compression to the nerve and examine the dilation of vesa nervonum inside it.