Rongtong Dictionary · Acupoint
ST36 Zusanli: Standard Location, Study Design, and Safety
ST36 (Zusanli) is standardized on the anterolateral lower leg, 3 B-cun below ST35 and one middle-finger width lateral to the anterior crest of the tibia. This anatomical description supports consistent identification; it is not a do-it-yourself needling instruction.
Main sources
What standardization accomplishes
The code ST36, the name Zusanli, and a shared surface location reduce ambiguity across languages, clinical records, teaching, and research. They do not standardize needle depth, manipulation, electrical stimulation, practitioner skill, or the other points used in a treatment session.
Understanding 3 B-cun
WHO location language uses proportional bone measurement. B-cun is scaled to the person’s body landmarks, so converting it into one universal number of centimetres is inaccurate. ST35, the tibial crest, knee position, and individual morphology all influence reproducible identification.
Two vocabularies should remain distinct
Traditional texts place ST36 on the stomach channel and assign it roles within the channel and point-category system. “Stomach channel” is a traditional functional construct, not the anatomical stomach, a single peripheral nerve, or a modern physiological pathway. Anatomical observations can describe tissues near the point without proving a one-to-one translation of the traditional model.
Why an “ST36 study” may test many things
Trials vary in point combinations, insertion depth, manual technique, electroacupuncture settings, session frequency, comparator, and outcome. If ST36 appears inside a multi-point protocol, the result belongs to the protocol. Reproducible reports should state practitioner background, localization method, treatment fidelity, missing data, and adverse-event surveillance.
Safety is a clinical competency
NCCIH notes that improperly delivered acupuncture can cause serious harms, including infection and organ injury. Sterile single-use needles, anatomy knowledge, skin preparation, sharps disposal, and recognition of complications are essential. Bleeding disorders, anticoagulants, local infection, pregnancy, and implanted electrical devices should be disclosed before treatment.
WHO neutrality statement
The inclusion of traditional medicine in WHO's ICD-11 provides a unified framework for statistics and evidence-based research; it does not imply WHO endorsement of the efficacy or safety of any traditional therapy. This page is for educational reference only and is not medical advice.
Frequently asked questions
Can ST36 be located with a fixed ruler measurement?
Not reliably. B-cun is proportional to individual body landmarks rather than a universal centimetre value.
Does this page teach self-needling?
No. It documents an entity location; invasive needling requires trained practice, sterile equipment, and complication management.
Can benefits in a multi-point trial be assigned to ST36 alone?
Usually not. Attribution must follow the full protocol and comparator.
Educational content only. It does not provide a diagnosis, prescription, dosage, or treatment recommendation. Seek qualified care for persistent or urgent symptoms.