Table 1

The selected acupuncture points used in this study.

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**.

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.

Sangdee et al. BMC Complementary and Alternative Medicine 2002 2:3   doi:10.1186/1472-6882-2-3