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Table 1 The selected acupuncture points used in this study.

From: Electroacupuncture versus Diclofenac in symptomatic treatment of Osteoarthritis of the knee: a randomized controlled trial

Acupuncture points Location Needling manipulation
Dubi (ST-35)1 In the depression of the lateral part of the patella ligament, when the knee is bent. Slightly towards the medial side*.
Medial Xiyan (Extra)1 In the depression of the medial part of the patella ligament, when the knee is bent. Slightly towards the lateral side**.
Trigger point2 At the level of the joint line, midpoint between the medial Xiyan and Ququan. Straight insertion*.
Ququan (Liv-8)2 At the medial end of the knee crease, in front of the semi-membranous muscle behind the lower end of the femur. Straight insertion**.
  1. 1First pair of elctrodes 2Second pair of electrodes *Stimulated with positive polarity at visit #1, 3, 5, 7,9,11 and negative polarity at visit #2, 4, 6, 8, 10, 12. **Stimulated with negative polarity at visit #1, 3, 5, 7,9,11 and positive polarity at visit #2, 4, 6, 8, 10, 12.