Fu's Subcutaneous Needling Treatment for Knee Osteoarthritis

In this study, physician will use a disposable Fu's subcutaneous needling(FSN) to penetrate the subject's skin from anterior superior iliac spine(ASIS) to 1/3 superior border of patella. Then the physician will push forward the needle parallel to the skin surface. The physician will sway the needle 45 times in 30 seconds. After swaying the needle, the physician will instruct the subject to do sole dorsiflexion for 10 seconds resisting the physician's opposite force, then the subject take a rest for 10 seconds. The above actions are 3 repetitions. Then the subject do knee flexion and extension for 10 seconds, and take a rest for 10 seconds. These actions are also 3 repetitions. After the above reperfusion approach of muscles, the physician will take out the needle to finish the treatment.

Transcutaneous electrical nerve stimulation (TENSor TNS) is the use of electric current produced by a device to stimulate the nerves for therapeutic purposes. TENS, by definition, covers the complete range of transcutaneously applied currents used for nerve excitation although the term is often used with a more restrictive intent, namely to describe the kind of pulses produced by portable stimulators used to treat pain. The unit is usually connected to the skin using two or more electrodes. A typical battery operated TENS unit is able to modulate pulse width,frequency and intensity. Generally TENS is applied at high frequency (\>50 Hz) with an intensity below motor contraction (sensory intensity) or low frequency (\<10Hz) with an intensity that produces motor contraction.