Puncture perpendicularly .5-1 cun
With the knee flexed and supported by a rolled pillow:
A. Perpendicular insertion, directed towards
Weizhong BL 40, 1-2 cun
B. Oblique insertion in a medial and superior direction, behind the patella 1 to 2 cun
C. Through-needling between lateral and medial Xiyan (MN-LE-16), behind the patellar ligament.