GB21 (Jianjing, “Shoulder Well”) is the Meeting point of GB, SJ, ST, & Yangwei point of the Gallbladder Channel Meridian. It is located on the shoulder, at the midpoint of the line connecting GV14 and the acromial extremity, directly above the nipple. It activates qi and blood, alleviates pain, and descends qi.
On the shoulder, at the midpoint of the line connecting GV14 and the acromial extremity, directly above the nipple.
Perpendicular insertion 0.5-1 cun. Caution: deep insertion may cause pneumothorax.
Activates qi and blood, alleviates pain, and descends qi.
Shoulder and neck pain, stiffness, mastitis, difficult labor.
GB21, 'Shoulder Well', is a powerful point for activating qi and blood in the shoulder and neck, effectively alleviating pain, stiffness, and tension in this region. It also has a strong descending action, making it useful for conditions like difficult labor (contraindicated in pregnancy) and mastitis. As a meeting point of multiple Yang meridians, it is a command point for the shoulder and neck, often used with LI4 for general pain relief.
GB21 is one of 44 points on the Gallbladder Channel Meridian. Nearby points:
GB21 (Jianjing) is located on the shoulder, at the midpoint of the line connecting GV14 and the acromial extremity, directly above the nipple.
GB21 activates qi and blood, alleviates pain, and descends qi. Common clinical indications include shoulder and neck pain, stiffness, mastitis, difficult labor.
Perpendicular insertion 0.5-1 cun. Caution: deep insertion may cause pneumothorax. Caution: ⚠ Pregnancy: avoid — may stimulate uterine contraction (miscarriage / early-labour risk). ⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.
GB21 is a point on the Gallbladder Channel Meridian (Zú Shàoyáng Dǎnjīng).