BL 39 — Wěi Yáng (委阳) — Outside of the Crook
On this page
1. Overview
BL 39 — Wěi Yáng (委阳) — is an acupuncture point on the Bladder meridian. Its English name, Outside of the Crook, reflects the point’s classical character and location. It is used in acupuncture practice as part of channel-balancing prescriptions for a range of conditions.
I am Dr (TCM) Attilio D’Alberto, a member of the British Acupuncture Council with over 25 years of clinical experience. I use BL 39 as part of individually tailored acupuncture prescriptions at my clinic in Wokingham, Berkshire.
2. Location
With the patient lying prone, this point can be found on the back of the knee, 1 cun lateral to BL-40 Weizhong.
3. Actions
- Regulates water pathways
- Benefits the Bladder
- Stimulates the transformation of Fluids in the Lower Jiao
- Harmonizes the San Jiao
- Regulates urination
- Activates the channel
- Alleviates pain
4. Indications
- Stiffness and pain of the lower back
- Distention and fullness of the lower abdomen
- Edema
- Dysuria
- Anuria
- Leg and foot cramps
- Fullness of the chest or abdomen
- Low back pain extending to the abdomen
- Loss of urine
5. Needling
Straight insertion, 1 to 1.5 cun, causing distention and soreness extending to the thigh.
Important: Acupuncture should only be performed by a fully qualified practitioner. Never attempt self-needling. All needles I use are sterile, single-use and disposed of immediately after treatment in a clinical sharps container.
6. Clinical notes
BL 39 Wěi Yáng (Outside of the Crook) is classified as: Lower He-Sea (Uniting) point of the San Jiao. These classifications inform how the point is used in clinical practice. The point is typically combined with other channel points to form a balanced prescription based on the patient’s individual TCM diagnosis.
7. Treatment at my clinic
I use BL 39 as part of tailored acupuncture prescriptions for conditions including Back pain, Constipation, Knee pain. Each treatment is individually designed following a full TCM assessment.
I see patients in person at my clinic in Wokingham, Berkshire. Visit the prices page for consultation fees. Return to the acupuncture points directory or the acupuncture main page.
