On the back of the knee, towards the lateral end of the popliteal fossa,in the depression medial to the biceps femoris tendon.
- ①Abdominal fullness, retention of urine;
- ②stiffness and pain in the lower back, cramping of the leg and foot.
Puncture perpendicularly 0.5-1.0 inch. Moxibustion is applicable.