肩貞 Jianzhen
“Shoulder’s Steadfastness” · SI9
Hand Taiyang · 9 of 19
Where. With the arm at your side, a thumb-width above the end of the armpit crease at the back.
For. Shoulder and arm pain, ringing ears.
Press. Two finger pads, slow circles, one minute each side.
肩貞，在肩曲胛下，兩骨解間按 · Press with me
Six slow breaths
About a minute. Press as you breathe out, ease as you breathe in.
鄰 · Neighbouring leaves
Where Jianzhen Sits on the Shoulder
On the hinder slope of the shoulder, the dataset places Jianzhen below the posterior aspect of the shoulder joint, one cun above the end of the posterior axillary fold, located while the arm is held close to the body. Each phrase deserves unpacking. The posterior axillary fold is the muscular ridge forming the back wall of the armpit — the roll felt just behind the armpit when the arm hangs at the side, built largely by the broad back muscle that sweeps upward to attach on the upper arm. Its end is the top of that ridge where it melts into the shoulder. One cun straight up from there brings the fingertip beneath the rounded hinder part of the shoulder joint — and a cun here means the proportional body-measure of Chinese point-location, conventionally about the width of the person’s own thumb.
Like its neighbour Naoshu (SI10) directly overhead, this is a point found against the closed armpit rather than on open display. With the arm adducted — drawn in against the trunk — the fold tightens into a clean cord whose upper end is easy to mark; release the arm and the point hides in soft tissue. Beneath the fingertip lie the muscular rim of the armpit’s back wall and, deeper still, the hinder capsule of the shoulder joint itself — crowded, mobile machinery that rewards patience. Straight above, along the same vertical line through the fold’s end, the record places Naoshu in the hollow beneath the lower border of the spine of the shoulder blade; the two stations stack like beads on one string, and finding either confirms the other.
As everywhere on the body map, the two sides answer one another: whatever hollow the fingers settle into on one shoulder should summon its twin on the other. Terrain checks help too. Your pad should rest on yielding soft tissue below the round of the shoulder — not on naked bone, not inside the armpit proper. If you notice you have drifted forward toward the chest-side fold, move back; if you have sunk into the pit of the armpit, climb a thumb-width higher. The point keeps to the shelf where shoulder becomes armpit, and always on the back side of that frontier.
A Self-Palpation Walkthrough
Sit or stand tall with the shoulders released, so nothing guards. Let your right arm hang loose at your side, then draw it gently inward until the upper arm rests against your ribs — this adduction tightens the back fold of the armpit and makes it prominent. Reach across with the left hand and find the muscular ridge at the back edge of the right armpit; trace it upward to its end, where it melts into the shoulder. Park a fingertip there, then walk it straight up about one thumb-width — one cun — and press lightly: this spot, tucked below the hinder round of the shoulder joint, is Jianzhen. Keep the fingertip parked while the arm drifts back to neutral, then repeat the whole search on the other side with hands swapped.
Two confirmations settle doubt. First, check the neighbour overhead: from your marked spot continue straight up and feel for the hollow beneath the lower border of the shoulder-blade spine — that is Naoshu (SI10), which the record describes as directly above the fold’s end, sharing this vertical line. If both stations land where the map says, the line between them can be trusted. Second, compare sides with a feather-light touch before any real pressure: many people notice a faint, dull awareness at the true point and little sensation a thumb-width away. Run one last terrain check — yielding tissue rather than bone, and well toward the back of the shoulder’s silhouette.
Common slips cluster predictably. Searching after the arm has already relaxed lets the fold dissolve, and fingers wander into the soft pit of the armpit — too low and too far in. Pressing too high lands on the bony ridge of the shoulder-blade spine, territory belonging to points above. Drifting forward finds the front fold instead, a different wall of the armpit altogether. And pressing hard enough to bruise teaches nothing: this ground answers patience, not force. When lost, drop the arm, roll the shoulder once, re-create the closed-armpit position slowly, and begin again from the fold’s end.
Reading the Name: The Shoulder’s Steadfastness
The two characters carry quiet weight. Jian 肩 is simply the shoulder, written with the flesh radical that anchors so many body-word characters. Zhen 貞 is richer: in the oldest layers of the writing it belonged to the world of divination — old dictionaries describe it as the act of putting a question and standing by for the answer — and from that root grew its familiar senses of steadfastness, loyalty, and unbending constancy. Read together, Jianzhen offers something like the shoulder’s steadfastness, or the shoulder’s faithful sentinel: a point standing firm at the joint’s hinder corner, keeping watch where the channel passes. Among gates, valleys, pools, and courtyards, a name that reads as character rather than geography stands out as unusual.
Unlike many celebrated stations, the record assigns Jianzhen no special point class — no stream, spring, sea, or source title. Its standing rests on plainer things: position and channel. Classical descriptions run the small intestine pathway up from the little finger along the back of the forearm, round the elbow in the groove between the olecranon and the inner bump of the humerus, then climb the upper arm to break over shoulder country exactly here, before winding on toward the neck and, at the journey’s far end, the ear. A pathway that must cross the shoulder passes over this ground; a point set on the crossing inherits every discussion the shoulder generates. Seniority without ornament.
Pinyin renders the name Jiānzhēn: a flat, level first tone on jian, and another flat first tone on zhen — the whole name rides one steady pitch, which suits a point named for constancy. The hanzi pair 肩貞 stays legible at a glance. In the channel’s longer story the name gains company: the stretch of road climbing from arm toward shoulder blade and neck gathers stations named for shoulders, arms, and heavens, and Jianzhen stands at the threshold of that ascent — the first station of the shoulder’s hill country.
Traditional Indications, Explained
The record lists five traditional indications: shoulder and arm pain; paralysis of the upper limb; cervical scrofula; tinnitus; and deafness. Take the first two together, since they share one root. The channel crosses this very joint, and classical reasoning drafted local points wherever cold, damp, or stagnant flow was judged to have settled in the sinews along its course — a stiff, painful shoulder was met at the doorway it guarded. Old formularies likewise reached here for upper limbs left weak or powerless after stroke-like illness. Such listings document ambition and habit of thought; loss of limb power today belongs with medical assessment and rehabilitation teams, and nothing on this page suggests otherwise. The entries are kept the way a map keeps an old road: as a record of how people once reasoned.
The third indication, cervical scrofula, is the tradition’s name for chains of nodular swellings along the sides of the neck — a condition old texts discussed at length and modern medicine understands very differently. Why would a shoulder point enter that conversation? The bridge is the channel once more: from this shoulder country the pathway climbs beside the neck on its way to the face, so points along the ascending route shared duties for complaints along it. Whatever the old logic, the modern rule is absolute: any unexplained lump or swelling in the neck belongs promptly with a physician, never with a pressure routine. The listing survives here as cultural history, plainly labelled.
The last pair — tinnitus and deafness — looks furthest from the shoulder until the channel’s destination is recalled. Classical texts carry the small intestine pathway up beside the neck and cheek to end in front of the ear, and old accounts add branches reaching within the ear itself; a channel that arrives at the ear naturally lent its points to complaints there. It bears repeating plainly: these are traditional uses recorded in a licensed dataset and classical literature, offered for cultural and historical understanding, not claims that pressing this point treats disease. Where modern research touches self-applied pressure at all, reviews suggest effects are modest and context-dependent, and evidence specific to any single point remains thin. Persistent ringing or changed hearing deserves professional evaluation on its own merits.
Self-Care Acupressure at Home
Settle in seated with both feet down and the working shoulder dropped and heavy. Locate the point by the walkthrough above, moving slowly enough that the fingertip never loses the fold’s end. Curl index and middle fingers together and rest the pads — never the tips — on the spot. Begin with contact alone for a few unhurried breaths, then add small, slow circles, letting the skin glide over the tissue rather than grinding. Pressure should register as pleasant dullness or spreading warmth, never sharpness. A common rhythm is one to three minutes per side, once or twice daily, matched to slow exhales so each circle rides the breath out. Swap hands and give the other shoulder the same courtesy.
With a tender shoulder especially, quality beats quantity. Jabbing invites the muscles to guard, which undoes the very ease a self-care pause wants. Warm your hands first if they run cold, and loosen the neighbourhood with two or three easy rolls before touching the point. Choose a quiet corner over a screen; the practice works best as a small ceremony of attention rather than background fidgeting. People who keep it up usually anchor it to an existing habit — after the morning wash, midway through desk hours — because consistency, not intensity, is what self-care traditions actually reward. Across weeks, notice what changes without demanding outcomes: perhaps less guardedness, perhaps easier motion while pressing, perhaps only ninety borrowed seconds of attending to your own body.
Boundaries belong inside the practice, not merely around it. If drawing the arm inward to expose the fold provokes pain, search instead with the arm hanging free and accept a fainter landmark, or ask a companion to help mark the spot. Never press into a wince, and never escalate force, duration, or depth to hurry a result; escalation is the one move this practice never rewards. On days when the shoulder refuses even gentle contact, grant it the day off. Curiosity that pulls toward forcing meets the same answer every time: return to gentleness, or stop for today.
Cautions and Safe Practice
An honest page states what the record does and does not say. For this entry the licensed dataset attaches no caution note — a plainer sheet than neighbouring points higher on the shoulder blade carry, whose warnings about deep structures are explicit. Say it plainly, then say the rest of it: absence of a recorded caution is information, not invitation. The shoulder houses a crowded interior — the joint’s capsule and gliding tendons behind, nerves and vessels threading the armpit below — none of which benefits from blunt assault, and all of which asks to be left alone by anything heavier than thoughtful fingertip contact. Surface kindness is the entire method.
The practical rules gather quickly. Use finger pads only — no elbows, knuckles, or tools. Keep the intention strictly superficial. Stop at once, and for the day, on any sharp, electric, or radiating sensation. Skip the point entirely while a shoulder is hot, swollen, or freshly injured, over broken or irritated skin, and during any feverish illness; wait until a clinician clears ordinary activity after shoulder surgery or a significant injury. Pregnant readers, and anyone managing significant health conditions, do best consulting a qualified practitioner before adding new point work to their routine. None of these rules costs the practice anything; gentleness was already the plan.
And the wider rule stands over everything: this page is educational, and acupressure is self-care — comfort and companionship for a body, not diagnosis or therapy. Seek prompt medical attention, not a longer pressing session, for severe shoulder pain following a fall or accident, any obvious deformity, numbness or weakness spreading down the arm, a lump in the neck, or stiffness that marches past a few weeks without easing. Persistent symptoms belong with a licensed practitioner — Western medicine or East Asian medicine, whichever suits the complaint. The image of a faithful sentinel suits the point well, and the safest gift Jianzhen offers most people matches it: a few quiet minutes spent knowing your own shoulder better, treated kindly.
Jianzhen, the Shoulder’s Steadfastness, holds the rear corner of the shoulder joint, one cun above the back fold of the armpit. Classical practice drafted it when a painful shoulder refused its duties, and the record joins it to old conversations about the ears and about neck troubles. This guide walks through finding it by touch and pressing it safely.
Self-care limits
Frequently asked
- How do I find Jianzhen without knowing anything about cun?
- Let your thumb do the measuring — at this latitude of the body, one cun is conventionally taken as the width of your own thumb. Draw the arm in against your ribs to tighten the back fold of the armpit, trace that ridge up to its end, then step one thumb-width straight higher. Cun measurements simply write the same landmark sequence in proportional language, tuned to whoever is being examined.
- Is pressing Jianzhen myself actually safe?
- Gentle fingertip contact held on the surface is reasonable everyday self-care for healthy adults: it engages skin and superficial muscle far short of the joint capsule, tendons, and vessels deeper in the region. The recorded entry carries no special caution, and home acupressure never approaches the professional techniques that would test one. Respect the stop signals regardless — sharp, electric, or worsening sensation all mean finish immediately.
- What did classical practice use Jianzhen for?
- The traditional record lists shoulder and arm pain, paralysis of the upper limb, cervical scrofula, tinnitus, and deafness. Classical texts describe the small intestine channel breaking over the shoulder here and ending in front of the ear, which ties the shoulder entries and the ear entries to one map. Those frameworks document how tradition reasoned — offered for cultural understanding, not as evidence-backed treatment claims.
- Why does a small intestine channel point care about the ears?
- Because the channel finishes its journey there. The classical course climbs from the little finger up the back of the arm, crosses the shoulder country Jianzhen occupies, rises beside the neck and cheek, and arrives in front of the ear, with old descriptions adding branches that reach inside it. Points along a route were traditionally drafted for complaints at either end of it — which is how a shoulder station joined conversations about ringing ears.
- Can pressing Jianzhen replace treatment for a frozen shoulder?
- No. Self-acupressure is a comfort practice, not diagnosis or therapy, and a shoulder that stays stiff or painful for weeks deserves proper assessment — what is actually wrong determines what actually helps. Think of two floors of one building: daily gentle self-care lives downstairs, while the consulting room upstairs belongs to licensed clinicians you visit when symptoms persist or escalate. Neither substitutes for the other.
Sources
- 01WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), World Health Organization — nomenclature conventions.
- 02A Manual of Acupuncture, Peter Deadman, Mazin Al-Khafaji and Kevin Baker — point-name tradition and channel context.
- 03aijiu-mpvue (MIT License) licensed dataset, entry for SI9 Jianzhen — location, action record, and caution status.
Last reviewed
牌記This leaf, for machines
Old books ended with a colophon saying who printed them. Every leaf here carries the same facts as structured data for agents and search, with no layout in the way.
- GET /en/points/si9/leaf.json
- GET /zh-hant/points/si9/leaf.json
- GET /zh-cn/points/si9/leaf.json
- /llms.txt — the index of every leaf
- JSON-LD in the page: MedicalWebPage, MedicalEntity and FAQPage
{
"id": "SI9",
"name": {
"en": "Jianzhen",
"gloss": "Shoulder’s Steadfastness",
"zh-Hant": "肩貞",
"zh-Hans": "肩贞"
},
"channel": {
"id": "SI",
"order": 9,
"of": 19
},
"location": {
"text": "With the arm at your side, a thumb-width above the end of the armpit crease at the back."
},
"for": [
"shoulder and arm pain",
"ringing ears"
],
"press": {
"text": "Two finger pads, slow circles, one minute each side.",
"seconds": 60,
"sides": "both"
},
"cautions": [],
"source": "Zhenjiu Jiayi Jing, book 3",
"url": "https://acupoints.com/en/points/si9",
"lastReviewed": "2026-08-24"
}