Hi Ozben,
I was some years ago inclined to use external tools as TENS and such things but I'm definitely convinced that my words (education) and my bare hands are ever more powerful than those ones.
I created a site about neuro-stimulation but I let it for a while now (
www.algoless.com) because electrical stimulation do not really care but only alievate...
About this case, I will use before neuromobs some research about imbalances and lumbar problems and treat foot after have mobilized the whole limb. So my impression based on experience is that an whole approach is effective and a focused one may fail! Treating often such cases, I will say that progresses are made quickly in 2/3 sessions.