SI13 Crooked Wall

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

SI13 (Quyuan, “Crooked Wall”) is an acupuncture point on the Small Intestine Channel Meridian. It is located on the medial extremity of the suprascapular fossa, approximately midway between the medial end of the scapular spine and the spinous process of T2. It activates the meridian and alleviates pain.

Location

On the medial extremity of the suprascapular fossa, approximately midway between the medial end of the scapular spine and the spinous process of T2.

Needling

Oblique insertion 0.3-0.5 cun. Caution: Pneumothorax.

⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.

TCM functions

Activates the meridian and alleviates pain.

Indications

Pain in the scapular region, pain in the shoulder and arm.

Clinical notes

SI13, Quyuan, is primarily utilized for local pain and stiffness in the scapular region, particularly along the medial border of the scapula. Its name, 'Crooked Wall,' refers to its location in the depression of the scapular spine, making it effective for conditions like frozen shoulder and pain radiating down the arm. It helps to relax tendons and invigorate the local circulation of qi and blood.

On the Small Intestine Channel channel

SI13 is one of 19 points on the Small Intestine Channel Meridian. Nearby points:

Frequently asked questions

Where is SI13 located?

SI13 (Quyuan) is located on the medial extremity of the suprascapular fossa, approximately midway between the medial end of the scapular spine and the spinous process of T2.

What is SI13 used for?

SI13 activates the meridian and alleviates pain. Common clinical indications include pain in the scapular region, pain in the shoulder and arm.

How is SI13 needled?

Oblique insertion 0.3-0.5 cun. Caution: Pneumothorax. Caution: ⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.

Which meridian is SI13 on?

SI13 is a point on the Small Intestine Channel Meridian (Shǒu Tài Yáng Xiǎo Cháng Jīng).

Interactive body mapConditions & evidenceFind an acupuncturistTCM glossary
⚠️ 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.