BL62 (Shenmai / Extending Vessel) Acupuncture Point Guide
Practitioner Guide from The Acupuncture Supply Co.
BL62 Shenmai is a confluent point of the yang qiao mai point of the Bladder channel. This Project Lotus reference brings together surface landmarks, traditional theory and practical safety considerations for qualified practitioners.
Quick reference
| Point | BL62 — Shenmai (Extending Vessel) |
|---|---|
| Channel | Bladder — Foot Taiyang |
| Classification | Confluent point of the Yang Qiao Mai |
| Region | Lateral ankle / foot |
| Laterality | Bilateral |
| Location | In the outer-foot hollow directly below the lateral malleolus, between its inferior border and the calcaneus. |
Location of BL62 Shenmai
In the outer-foot hollow directly below the lateral malleolus, between its inferior border and the calcaneus.
Landmark sequence
- Support the outer ankle.
- Palpate the prominence and lower border of the lateral malleolus.
- Move directly inferiorly into the depression above the calcaneus.
- Confirm that the point is below, not behind, the malleolus.
Where a B-cun measurement is given, use the patient’s proportional body measurement. It is not a fixed centimetre distance or a universal number of the practitioner’s finger breadths. Confirm the relevant landmarks by palpation before deciding on a technique.
Distinguishing nearby points
BL62 is below the lateral malleolus. KI6 is on the medial side; BL60 is behind the lateral malleolus.
Traditional functions
Within traditional East Asian medicine, this point is commonly described in terms of the following functions:
- Regulates the Yang Qiao Mai
- Calms the Shen and benefits the head in traditional theory
- Activates the channel and eases pain
Traditional applications
Traditionally considered in Yang Qiao Mai strategies, selected sleep or Shen presentations, and lateral ankle or posterior-channel discomfort. Its extraordinary-vessel pairing with SI3 is a theoretical framework rather than a fixed prescription.
These descriptions express traditional theory. They are not claims that this individual point has been proven to prevent or cure a medical condition. A symptom or channel label alone is insufficient to select a treatment.
Planning a point combination
Consider the treatment principle, local versus distal selection and the patient’s complete presentation. Related Project Lotus guides for comparison include SI3, KI6. These are educational comparison points, not a fixed prescription. Confirm the rationale, laterality and technique within accredited training.
Anatomy and essential safety
Local fibular tendons, ligamentous structures and sensory branches need consideration. Inspect for ankle instability, recent sprain, swelling and altered protective sensation.
- Inspect the skin and assess local tissue, circulation and sensation. Do not needle through infected, ulcerated, inflamed or otherwise unsuitable tissue.
- Review relevant surgery, injuries, implants, bleeding risk, medication, pregnancy and previous adverse reactions.
- Use sterile single-use needles, appropriate infection control and safe sharps disposal. Obtain informed consent and document the treatment.
- Choose angle, depth and stimulation from anatomical assessment and accredited training. This guide gives no universal insertion depth. Stop and reassess unexpected sharp pain, neurological symptoms or a concerning response.
When medical assessment takes priority
An inability to bear weight after injury or an acutely hot swollen ankle needs assessment. New seizures or loss of consciousness require emergency care.
Moxibustion
Moxa is not an automatic addition. Consider the traditional pattern, local anatomy and the practitioner’s training. Where heat is appropriate, assess sensation, skin condition, ventilation and the patient’s ability to report discomfort; supervise continuously and prevent burns.
Research note
Evidence concerning an acupuncture treatment or a multi-point protocol cannot be assigned automatically to this point alone. This guide does not claim an independently established clinical effect for BL62. Traditional functions and clinical evidence should be discussed separately.
Frequently asked questions
Is this point bilateral?
Yes. The surface landmarks apply on both sides. Treatment laterality depends on assessment and the chosen clinical strategy.
Can the image replace palpation?
No. The image shows the landmark relationship schematically. Body proportions, tendon visibility and tissue depth vary, so trained examination remains essential.
Is this a self-needling guide?
No. It is an educational reference for qualified practitioners and does not replace professional training or medical assessment.
Continue exploring Project Lotus
Browse our Acupuncture Point Guides and professional acupuncture needles.
Professional note: Educational material for qualified acupuncture practitioners. Individual assessment, consent, safe technique and appropriate referral remain the practitioner’s responsibility.
References: WHO Standard Acupuncture Point Locations, updated reprint 2009 (entry BL62); CEIMEC point atlas (cross-check; WHO takes precedence where descriptions differ); Joel Penner, American Dragon: traditional point reference; NCCIH: acupuncture evidence and safety. Checked 5 October 2026.
