SI10 Upper Arm Shu

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

SI10 (Naoshu, “Upper Arm Shu”) is the Meeting point of SI, UB, Yang Qiao Mai point of the Small Intestine Channel Meridian. It is located posterior to the shoulder joint, directly superior to the inferior angle of the scapula, in the depression inferior to the acromion when the arm is adducted. It activates the meridian and alleviates pain.

Location

Posterior to the shoulder joint, directly superior to the inferior angle of the scapula, in the depression inferior to the acromion when the arm is adducted.

Needling

Perpendicular insertion 0.5-1.0 cun.

TCM functions

Activates the meridian and alleviates pain.

Indications

Pain in the shoulder and arm, motor impairment of the shoulder joint.

Meeting point of SI, UB, Yang Qiao Mai

Clinical notes

SI10, Naoshu, is a significant local point for shoulder pain, especially involving the posterior aspect and difficulty raising the arm. As a meeting point of the Small Intestine, Bladder, and Yang Qiao Mai, it effectively addresses complex shoulder and upper limb disorders, including frozen shoulder. Its action extends to dispelling wind-damp and invigorating qi and blood in the shoulder joint.

On the Small Intestine Channel channel

SI10 is one of 19 points on the Small Intestine Channel Meridian. Nearby points:

Frequently asked questions

Where is SI10 located?

SI10 (Naoshu) is located posterior to the shoulder joint, directly superior to the inferior angle of the scapula, in the depression inferior to the acromion when the arm is adducted.

What is SI10 used for?

SI10 activates the meridian and alleviates pain. Common clinical indications include pain in the shoulder and arm, motor impairment of the shoulder joint.

How is SI10 needled?

Perpendicular insertion 0.5-1.0 cun.

Which meridian is SI10 on?

SI10 is a point on the Small Intestine Channel Meridian (Shǒu Tài Yáng Xiǎo Cháng Jīng).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.