Effectiveness of Transcranial Direct Current Stimulation for TKR

Transcranial direct current stimulation (tDCS) is a technique of noninvasive cortical stimulation allowing significant modification of brain function used. Clinical application of this technique could be helpful for pain, Parkinson's disease, dystonia, cerebral palsy and dementia etc. And tDCS is safe with only mild, transient adverse effects. But there is few studies focused to postoperative states. The aim of this project is to reveal the effect of tDCS for postoperative pain after total knee replacement surgery,