SP-9 Yinlingquan
SP-9 Yinlingquan (陰陵泉) is a point on the Spleen meridian. In TCM theory it is described as influencing the channel's qi, and it is traditionally used in the context of the whole pattern rather than as a stand-alone remedy. This page explains how to locate it, what the tradition says about it, and how to press it safely.
Location
In the depression below the medial condyle of the tibia.
How to find it
Slide up the inner shin toward the knee. Just below the bony prominence on the inner knee, find the soft depression behind and under it.
Traditional functions
- He-sea point of the Spleen meridian
- Transforms dampness and regulates fluids
- Benefits the knee and lower leg
Traditional uses
- Fluid retention and puffiness in traditional terms
- Bloating and heaviness
- Knee discomfort
- Urinary patterns in the classical description
How to press it
Press with the thumb for 1 minute, then gently flex and extend the knee.
Acupressure is generally a gentle practice. Use the pad of the thumb or finger, start with light pressure, and increase only to a comfortable level. A mild ache or warmth is common; sharp pain is a signal to ease off.
Safety
Avoid strong pressure on an inflamed knee or over varicose veins. Persistent swelling needs medical evaluation.
How this is viewed today
SP-9 is used in clinical research on fluid retention and knee osteoarthritis, usually as part of a combination. Evidence is limited.
Sources & further reading
- Huangdi Neijing (黃帝內經), c. 2nd century BCE.
- Nanjing (難經), c. 1st–2nd century CE.
- World Health Organization, Standard Acupuncture Nomenclature, 2nd ed., 1991.
- Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Journal of Chinese Medicine Publications.
- National Center for Complementary and Integrative Health, Acupuncture: What You Need To Know.
Related: Spleen meridian · Acupoint library · SP-6 Sanyinjiao · SP-10 Xuehai · ST-36 Zusanli · all twelve meridians