SI10 Naoshu translates to 'Upper Arm Shu

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

SI10 (Naoshu, “Naoshu translates to 'Upper Arm Shu”) is the Meeting point of SI, UB, Yang Qiao Mai point of the Small Intestine Channel Meridian. It is located on the posterior aspect of the shoulder, in a depression directly inferior to the spine of the scapula and posterior to the acromion. The point is found by abducting the arm, where a clear depression appears. It activates the channel, alleviates pain, benefits the shoulder and arm.

Location

On the posterior aspect of the shoulder, in a depression directly inferior to the spine of the scapula and posterior to the acromion. The point is found by abducting the arm, where a clear depression appears.

Needling

Perpendicular or oblique insertion 1.0 to 1.5 cun. Oblique insertion can be directed medially towards the spine of the scapula or inferiorly along the posterior border of the deltoid muscle.

TCM functions

Activates the channel, alleviates pain, benefits the shoulder and arm..

Indications

Arm soreness and weakness, shoulder pain that radiates to the scapula, chills and fever, swelling due to qi, leg pain..

Meeting point of SI, UB, Yang Qiao Mai

Clinical notes

SI10 is a primary local point for treating a wide range of shoulder disorders, especially those involving pain, soreness, and weakness in the posterior aspect of the joint. Its connection to the Yang Wei and Yang Qiao vessels gives it a broader capacity to treat systemic conditions involving chills and fever. Clinically, it is most often used for rotator cuff injuries, frozen shoulder, and general shoulder pain that makes it difficult to lift the arm.

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 on the posterior aspect of the shoulder, in a depression directly inferior to the spine of the scapula and posterior to the acromion. The point is found by abducting the arm, where a clear depression appears.

What is SI10 used for?

SI10 activates the channel, alleviates pain, benefits the shoulder and arm. Common clinical indications include arm soreness and weakness, shoulder pain that radiates to the scapula, chills and fever, swelling due to qi, leg pain.

How is SI10 needled?

Perpendicular or oblique insertion 1.0 to 1.5 cun. Oblique insertion can be directed medially towards the spine of the scapula or inferiorly along the posterior border of the deltoid muscle.

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.