1. 血海(SP10)：屈膝，在大腿内侧，髌底内侧端上2寸，当股四头肌内侧头的隆起处(图1)。

屈膝，医者以左手掌心按于患者右膝髌骨上缘，二至五指向上伸直，拇指约成45"斜置，拇指尖下是穴(图2)。

2. 箕门(SP11)：在大腿内侧，当血海与冲门连线上，血海上6寸(图1)。

1. Xuehai (SP10): with the knee flexed, on the medial side of the thigh, 2 cun above the superior medial corner of the patella, on the prominence of the medial head of the quadriceps muscle (Fig. 1).

To locate the point: with the knee flexed, the practitioner places the right palm on the inferior border of the subject's left patella, with the fingers and thumb fully extended and the thumb at 45 degree to the index finger. The point is underneath

the tip of the thumb (Fig. 2).

2. Jimen(SP11): on the medial side of the thigh, on the line connecting Xuehai (SP10) and Chongmen (SP12), and 6 cun above Xuehai (SP10) (Fig. 1).

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