The shoulder point on the leg. Tiaokou (ST-38) is best known for one remarkable trick: needling this point on the lower leg — while the patient moves their shoulder — can dramatically ease shoulder pain and restore lost mobility. It is a striking example of distal acupuncture at its finest.
Contraindications
Tiaokou (ST-38) is a safe and straightforward point on the lower leg with no special contraindications. Standard clean needle technique and correct depth apply.
Name & story
The name 条口 Tiaokou means "Narrow Opening" or "Narrow Mouth" — a vivid image of the slender, elongated groove on the shin where the point sits, between the tibia and fibula, like a narrow passage. There is something fitting about the name: this quiet, unassuming point on the lower leg opens up a pathway for stuck Qi all the way to the distant shoulder, cutting through obstruction like a narrow corridor connecting two far-off rooms.
Point family & character
Tiaokou (ST-38) belongs to the Stomach Meridian (ST). It carries no special classical category — it is not a He-Sea, Xi Cleft or Yuan Source point. Its power is largely empirical: centuries of clinical use have confirmed its remarkable effectiveness for the shoulder, especially when combined with active movement.
Five-element dynamics
The Stomach Meridian (ST) runs a long course from the face all the way down to the foot, and its Qi can become obstructed anywhere along the channel or in regions it connects with. Tiaokou (ST-38) sits on the lower leg and works by expelling Wind and Dampness and removing obstructions from the channel — restoring the free flow of Qi and Blood (Xue) through stuck, painful areas, including the shoulder region, which is linked to the Stomach and Large Intestine channels.
Location
On the front of the lower leg, 8 Cun below ST-35 (Dubi — the hollow at the outer edge of the kneecap), one finger's breadth lateral to the front ridge of the shin bone. It sits midway between ST-35 and the ankle fold.
Anatomy & fascia
The point lies on the anterior aspect of the lower leg, in the tibialis anterior muscle, lateral to the anterior crest of the tibia.
Needling
The needle is inserted perpendicularly. For shoulder pain, a well-established technique is to obtain Qi at Tiaokou (ST-38) and then ask the patient to actively move the affected shoulder while the needle is manipulated — in most cases, pain is relieved and mobility improved almost immediately.
Safe depth
1–1.5 Cun.
The golden tip
If you have a stiff or aching shoulder, try this self-care point: find Tiaokou (ST-38) midway down the shin, about 8 Cun below the kneecap, just outside the shin bone's front ridge. Press or massage firmly for one to two minutes, and while you do, gently move your shoulder around — circle it, lift it, test the painful range. Many people notice an easing of tension in the shoulder while stimulating this point. It is safe to use daily.
For education only — not medical advice. Consult a qualified practitioner.