SI-11 (Tian Zong) Celestial Gathering

What does SI-11 Tian Zong do?

Tian Zong SI-11 is the principal point of the shoulder blade — the Small Intestine channel's point in the hollow of the scapula, whose recorded work is to open the channel and relieve scapular pain, to move qi and unbind the chest and the flanks, and to benefit the breasts. Sacred Lotus sources & references record those three actions directly, and all three follow from where the point sits: on the back of the shoulder blade, level with the fourth thoracic vertebra, over the thick muscle that fills the hollow below the ridge of the scapula.

• Activates the channel and alleviates pain — the first recorded action and the busiest one in modern practice. The Small Intestine channel crosses the scapula on its way from the little finger to the ear, and SI-11 is the point at which it crosses the widest part. It is used for pain and stiffness of the shoulder blade, for pain that will not let the arm lift, and for pain referred down the back and outer side of the arm to the elbow.
• Moves qi and unbinds the chest and the lateral costal region — the second recorded action, and the one that takes this point beyond the shoulder. "Unbinding the chest" is the tradition's phrase for releasing a sensation of tightness, oppression or fullness across the ribs, and our own indication record carries asthma at this point for that reason. A point on the back reaching the front of the body is exactly what this action describes.
• Benefits the breasts — the third recorded action, and the most distinctive. Our own use record carries insufficient lactation and breast abscess here, and the classical and modern literature both preserve the association. It is one of the few points on the back of the body with a documented breast indication, and the reason is the same as for the chest action: the point lies on the far side of the same segment of chest wall.
• Relaxes the sinews of the shoulder region — an extension of the first action rather than a separate one. The reference literature records SI-11 for contracture, stiffness and restricted movement of the shoulder joint, and it is the point most often reached for when the muscle of the scapular hollow is itself tight and sore.

Why SI-11 carries no point category — and why that does not diminish it. Queried directly, this point holds no five-shu, yuan, luo, xi-cleft, back-shu, front-mu or confluent classification and no element, and none is recorded for it in the standard references either. That is worth stating plainly because the Small Intestine channel is unusually rich in categories at its far end — SI-01 Shao Ze is the Jing-Well and Metal point, SI-02 Qian Gu the Ying-Spring and Water point, SI-03 Hou Xi the Shu-Stream and Wood point and the Confluent point of the Governing Vessel, SI-04 Wan Gu the Yuan-Source point, SI-05 Yang Gu the Jing-River and Fire point, SI-06 Yang Lao the Cleft point, SI-07 Zhi Zheng the Connecting point and SI-08 Xiao Hai the He-Sea and Earth point, all held here and all queried. SI-11 has none of them, and it is nonetheless the most used point on the channel above the elbow. A point does not need a classification to matter; position can be the whole argument, and here it is.

Source: Sacred Lotus sources & references (existing action and use record, reformatted here as a list; channel confirmed as the Small Intestine Channel of Hand Tai Yang and the absence of point categories and element queried directly, alongside the complete SI-01 to SI-08 classification set); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 241); Chinese Acupuncture & Moxibustion (p. 171); cross-referenced against multiple online sources.

What is SI-11 Tian Zong used for?

Tian Zong SI-11 is used above all for pain and stiffness of the shoulder blade and shoulder, for pain running down the back and outer side of the arm to the elbow, and — the indication readers least expect — for disorders of the breast, including insufficient lactation and breast abscess. The indications below are those carried in Sacred Lotus sources & references together with those set out in the standard reference literature. They describe traditional use, not proven treatment. This is a comparatively low-hazard point, for the reasons set out under needling.

• Pain in the scapular region — the defining indication
• Stiffness, aching and heaviness of the shoulder blade
• Pain in the shoulder joint and difficulty raising the arm
• Pain on the back and outer aspect of the elbow and upper arm
• Pain referred from the shoulder blade down the arm
• Contracture and restricted movement of the shoulder
• Pain and stiffness of the neck extending to the shoulder blade
• Asthma, wheezing and difficult breathing
• Fullness and oppression of the chest
• Pain in the flanks and between the ribs
• Insufficient lactation — too little milk after childbirth
• Breast abscess and mastitis
• Breast distension, swelling and pain
• Cough

The breast indications are not an oddity, and they are worth explaining. Sacred Lotus sources & references carry "promotes lactation" and "breast abscesses" in this point's own use record, and its recorded action is to benefit the breasts. The classical rationale is positional: SI-11 sits on the back of the same segment of chest wall the breast sits on at the front, and the tradition treats front and back of a segment as reachable from either side. The points that carry the breast most directly from the front are held here too — Ru Gen ST-18 at the base of the breast, the principal classical breast point; Shan Zhong REN-17 on the breastbone, the Hui-Meeting Point of the Qi and the Front Mu point of the Pericardium; and Shao Ze SI-01 at the little fingertip, the Small Intestine channel's own Jing-Well point, whose recorded action is to promote lactation and benefit the breasts. SI-11 belongs with them, and shares a channel with SI-01.

Source: Sacred Lotus sources & references (existing indication and use records, reformatted here as a list; the ST-18, REN-17 and SI-01 records queried directly); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 241); Chinese Acupuncture & Moxibustion (p. 171); cross-referenced against multiple online sources.

Where is SI-11 Tian Zong, and how is it used in practice?

Tian Zong lies in the middle of the hollow on the back of the shoulder blade, below the bony ridge that runs across it, roughly level with the fourth thoracic vertebra. In our own words: run a finger along the hard ridge that crosses the upper part of the shoulder blade, drop just below its midpoint into the broad shallow hollow beneath, and move about a third of the way down toward the bottom corner of the blade. The spot is usually tender, often markedly so, and there is bone directly beneath the finger the whole time. Sacred Lotus sources & references hold two location records for it, one measuring from the ridge of the scapula and the bottom corner of the blade, the other giving the vertebral level.

One wording difference between our two location records is worth flagging rather than smoothing over. The Chinese Acupuncture & Moxibustion rendering held here describes the point as lying in the depression at the centre of the "subscapular fossa". In strict anatomical usage the subscapular fossa is on the front of the shoulder blade, against the ribs, and cannot be reached from the back at all; the hollow the point actually occupies is the infraspinous fossa on the dorsal surface, below the spine of the scapula. Our Deadman & Al-Khafaji record describes exactly that dorsal hollow and leaves no ambiguity. Both of our location records are kept unchanged; the note is added because the phrase recurs across the English-language literature and readers meet it constantly.

Which points is SI-11 combined with?

• With Jian Zhen SI-09, Nao Shu SI-10, Bing Feng SI-12 and Qu Yuan SI-13 — its immediate neighbours on the same channel around the shoulder blade, all held here. SI-10 is a Meeting Point of the Small Intestine and Bladder channels with the Yang Linking and Yang Motility Vessels, and SI-12 a Meeting Point of the Small Intestine, Large Intestine, Sanjiao and Gallbladder channels — both queried. Needling two or three of this run together is the ordinary local treatment for the scapular region.
• With Jian Yu LI-15 and Jian Liao SJ-14 — the two points on the top and outer side of the shoulder. The trio SI-11, LI-15 and SJ-14 is the commonest published shoulder combination in the modern literature, appearing in trial after trial for frozen shoulder, rotator cuff pain and post-stroke shoulder pain. It also appears with Jian Zhen SI-09 as a set of four (PMID 28619769).
• With Jian Jing GB-21 — on the top of the shoulder, a Meeting Point of the Gallbladder, Sanjiao and Stomach channels with the Yang Linking Vessel, queried here. The GB-21 and SI-11 pairing covers the top and the back of the shoulder girdle between them. GB-21 carries a documented pneumothorax hazard that SI-11 does not, which is set out under needling.
• With Hou Xi SI-03 — the same channel's Shu-Stream and Wood point at the hand, and the Confluent point of the Governing Vessel, held here. Pairing a local point on the scapula with a distal point on the same channel at the hand is the standard distal-and-local structure, and SI-03 is the Small Intestine channel's usual distal choice for the neck, shoulder and upper back.
• For the breast — with Ru Gen ST-18 and Shan Zhong REN-17, the two principal front-of-chest breast points held here, and with Shao Ze SI-01 at the little fingertip for insufficient lactation. A network analysis of 312 published studies covering 343 acupoint prescriptions for breast hyperplasia identified Tianzong SI-11 among the sixteen core acupoints, alongside REN-17, LIV-14, SP-06, LIV-03, ST-36, GB-21, ST-18, ST-15, P-06, ST-40, REN-04, KI-03, BL-18 and Ashi points (Zhen Ci Yan Jiu 2021;46(1):76–83, PMID 33559431). Every one of those is held in this library.
• With the cervical Jiaji points and Feng Chi GB-20 — where the scapular pain is referred from the neck rather than arising in the shoulder itself, which the modern literature treats as the commoner case.

Why is SI-11 the point practitioners reach for most on the shoulder blade?

Because it is the only widely used point in the middle of the infraspinous hollow, and because that hollow is where scapular pain concentrates. The blade is a large, flat, thinly covered bone, and the muscle filling the hollow below its ridge is one of the most reliably tender muscles in the body in anyone with shoulder trouble. SI-11 sits over the thick belly of that muscle. Two independent lines of evidence converge on the same spot, and both are worth stating precisely because neither is quite about the acupoint:

• Pressure pain thresholds measured at SI-11 by name. A cross-sectional matched case-control study in Beijing measured pressure pain thresholds at four acupoints — Tianzong SI-11, Jianliao SJ-14, Jianyu LI-15 and Jianzhen SI-09 — in 30 patients with one-sided shoulder pain and 30 healthy controls. Thresholds were significantly lower on the painful side than the unpainful side, and lower on patients' unpainful side than in controls, while non-acupoint sites showed no such difference (BMJ Open 2017;7(6):e014438, PMID 28619769, PMC5541597). The honest part of that result is the part usually left out: the correlation with the study's peripheral and central sensitisation indices was found at SJ-14, LI-15 and SI-09 — and not at SI-11. The study measured this point and reported a weaker association for it than for its three neighbours.
• The muscle beneath has been mapped — but the study did not name the acupoint. A topographical mapping study divided the area over the infraspinatus into ten one-square-centimetre sub-areas in 19 patients with one-sided shoulder and arm pain, measured the pressure pain threshold in each, and then needled each sub-area to provoke a twitch or referred pain. Thresholds were lowest on the painful side and lowest of all at the midfibre region of the muscle, where multiple active trigger points clustered (Ge HY et al., Eur J Pain 2008;12(7):859–65, PMID 18203637). That study is about the infraspinatus muscle and does not mention SI-11 or any acupoint. It is cited because the midfibre region it identifies is the part of the hollow SI-11 occupies — an anatomical coincidence worth knowing, not a finding about the point.

Source: Sacred Lotus sources & references (both location records; existing use record; the SI-01, SI-03, SI-09, SI-10, SI-12, SI-13, GB-21, ST-18 and REN-17 records queried directly); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 241); Chinese Acupuncture & Moxibustion (p. 171); PMID 28619769 (PMC5541597); PMID 18203637; PMID 33559431 — each verified resolvable and checked for retraction status before citation; cross-referenced against multiple online sources.

Where is SI-11 located?

• A Manual of Acupuncture (p. 241): On the scapula, in a tender depression one third of the distance from the midpoint of the inferior border of the scapular spine to the inferior angle of the scapula.
• Chinese Acupuncture and Moxibustion (p. 171): On the scapula, in the depression of the center of the subscapular fossa, and at the level of the 4th thoracic vertebra.

How is SI-11 Tian Zong needled, and is it a dangerous point?

Stated plainly: SI-11 is a comparatively low-hazard point, and the reason is a single anatomical fact — the flat body of the shoulder blade lies directly beneath it. A needle at this point meets skin, fat, the muscle filling the infraspinous hollow, and then bone. There is no body cavity, no lung and no great vessel in the path, and the depth our records carry — perpendicular or oblique, 0.5 to 1.0 inch — is an ordinary soft-tissue depth over a bony floor rather than a bounded safety figure. That deserves saying directly rather than attaching a generic caution, because SI-11 sits within a few centimetres of points where the hazard is real and documented, and the difference between them is the scapula. Everything below is recorded as neutral reference data describing what the textbooks and the published literature state. It is not instruction, this page does not teach technique, and needling is carried out only by a qualified, licensed practitioner.

The angle and depth the texts record

• Sacred Lotus sources & references record perpendicular or oblique insertion of 0.5 to 1.0 inch, with moxibustion applicable. No caution accompanies it in our record — which is itself informative, given how many points in this library carry one.
• Deadman & Al-Khafaji (p. 241) and Chinese Acupuncture & Moxibustion (p. 171) record a comparable perpendicular or oblique range over the infraspinous fossa. Neither attaches the pneumothorax caution that both attach to the thoracic Back-Shu points, to the lateral chest points and to the points above the collarbone.
• For comparison within our own holdings. Queried directly, our records give 0.3 to 0.5 inch oblique at Da Bao SP-21 on the lateral chest wall and at the Spleen points above it, and 0.5 to 0.7 inch at the thoracic Back-Shu points such as Fei Shu BL-13 — all tighter figures than SI-11's, at points where the lung lies beneath. Depth figures in this literature track the structure underneath, not the size of the region, and SI-11's comparatively generous figure is a statement about the bone behind it.
• Moxibustion, cupping and massage are all recorded here and are common at this point. A 1982 clinical report of 47 cases of acute mastitis used moxibustion at Tanzhong REN-17 combined with massage — not needling — at Tianzong (J Tradit Chin Med 1982;2(2):109–10, PMID 6765696), and the flat bony floor is a large part of why manual and heat techniques suit this location so well.
• Needling technique at this point has itself been written about. A paper devoted to needling manipulation at Tianzong appeared in the English-language Chinese literature (Chen Y, Zheng K, J Tradit Chin Med 2002;22(1):38–41, PMID 11977520). We record its existence; no abstract is indexed, and no technique from it is reproduced here.

What actually lies beneath

• The scapula. The infraspinous fossa is a broad, shallow, gently curved plate of bone. The point lies over its middle, where the bone is continuous and the muscle covering it is at its thickest. A needle inserted perpendicularly at this point is travelling toward bone, not toward a cavity.
• The muscle and its nerve. The infraspinatus fills the hollow and is supplied by the suprascapular nerve, which reaches it around the outer edge of the scapular spine — lateral and superior to the point rather than under it. The suprascapular artery accompanies it on the same course.
• Where the bone stops — and why it matters. The scapula does not protect the whole shoulder region. Below the bottom corner of the blade, medial to its inner border, and above the level of the collarbone, the chest wall is exposed and the lung lies close. That is precisely where the documented hazards of this region are: our own records for the thoracic Back-Shu run, for the lateral chest points and for Jian Jing GB-21 on the top of the shoulder all carry the pneumothorax caution, and GB-21 has a measured figure attached to it in the published literature. SI-11 is not in that group. The useful way to hold the anatomy is that the shoulder blade is an island of safety on a chest wall that is otherwise thin.
• No imaging study measuring a safe needling depth at SI-11 could be located, and none is needed in the way it is over the ribs: the depth is bounded by bone rather than by a membrane. It is worth noting that a paediatric chest CT study which measured skin-to-pleura distances at 23 individually named points, including SI-14 and SI-15 on the upper back, did not measure SI-11 — the Small Intestine points it covers are the two above the scapular spine, not this one.
• Two general facts about depth. Two systematic reviews of the safe-depth literature — 33 studies in the first, 47 in the second, by MRI, CT, ultrasound and cadaveric dissection — both concluded that measured depths for the same point vary greatly between subject groups and measuring methods, and that "safe depth" has never been standardised (J Altern Complement Med 2011;17(3):199–206, PMID 21417806; Evid Based Complement Alternat Med 2013;2013:740508, PMID 23935678). Neither reports a figure for this point.

What is documented, and one unexpected effect worth recording

• The ordinary events are minor. Bruising, brief local soreness and a lingering ache in the muscle are what the reference literature records at points of this kind. A meta-analysis of prospective clinical studies found that about half of all recorded acupuncture adverse events across the whole repertoire were bleeding, pain or flare at the needle site (Bäumler P et al., BMJ Open 2021;11:e045961, PMID 34489268).
• A published case of unexpected lactation, and it names this point. A 41-year-old woman with breast cancer, treated with acupuncture for pain after mastectomy and reconstruction using paravertebral segmental points, trigger points and a contralateral hand point, developed an episode of galactorrhoea — milk production in the unaffected breast — six days after her first treatment and again during her second, having not lactated for four years. Brain imaging showed no abnormality. The authors noted that the traditional Chinese literature uses "the Tianzong acupoint SI11" to promote lactation, and that in this patient the point coincided with a trigger point over the infraspinatus that had been included in the treatment; they linked the effect to reported rises in prolactin and oxytocin after acupuncture (Jenner C, Filshie J, Acupunct Med 2002;20(2-3):107–8, PMID 12216598). This is a single case report and proves nothing about mechanism. It is recorded because it is one of the very few published observations that touches this point by name, and because it corroborates our own use record — which carries "promotes lactation" at SI-11 — from an entirely unexpected direction, in a setting where the effect was not wanted.
• Honest limit. We could not source any published case report of injury at SI-11, and none is asserted. Where a point is low-hazard, the useful thing is to say so plainly rather than import a warning from a neighbouring region, and that is what is done here.

Risk in proportion

A meta-analysis of prospective clinical studies estimated serious adverse events in acupuncture at approximately 1 per 10,000 patients and around 8 per million treatments, placing it among the safer treatments in medicine (PMID 34489268). Systematic reviews of the Chinese case literature agree about where those events cluster: over the chest, the abdomen, the neck and the orbit, attributed chiefly to improper technique (He W et al., PMID 22967282; Zhang J et al., Bull World Health Organ 2010;88(12):915–921C, PMID 21124716, PMC2995190). SI-11 is not in that group, and the accurate summary is that it is one of the straightforward points of the upper back.

Source: Sacred Lotus sources & references (existing needling and location records; the SP-21, BL-13, GB-21, SI-14 and SI-15 records queried directly); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 241); Chinese Acupuncture & Moxibustion (p. 171); PMID 12216598; PMID 6765696; PMID 11977520; PMID 21417806; PMID 23935678; PMID 34489268; PMID 22967282; PMID 21124716 (PMC2995190) — each verified resolvable and checked for retraction status before citation.

What does the name Tian Zong mean?

Tian Zong means "Celestial Gathering" — tian, heaven or the celestial, and zong, an ancestral gathering or clan assembly. Sacred Lotus sources & references translate it exactly that way; it is also met as "Heavenly Gathering" and "Ancestral Assembly". Both halves of the name are doing work. Tian marks the upper part of the body: the classical naming convention gives tian to points of the chest, shoulders, neck and head, and the Small Intestine channel carries three of them in a row as it climbs — Tian Zong SI-11 on the shoulder blade, Tian Chuang SI-16 ("Celestial Window") and Tian Rong SI-17 ("Celestial Countenance") on the neck, all held here. Zong is the gathering. The shoulder blade is where the channel spreads across the widest surface it will ever cross, and where several channels converge in the neighbourhood — an assembly point, in the name's own image.

Is Tian Zong SI-11 or ST-11?

It is SI-11 — the eleventh point of the Small Intestine Channel of Hand Tai Yang — and this is worth stating outright because at least one indexed publication prints it wrongly. A clinical study of digital acupoint pressure for nerve-root cervical spondylosis in 400 patients lists its treatment points as "Quepen (ST 12), Jianjing (GB 21) and Tianzong (ST 11)" (Zhongguo Zhen Jiu 2009;29(8):659–62, PMID 19947274). ST-11 is Qi She ("Qi Abode") on the Stomach channel, held here and queried: it lies at the base of the neck, at the upper border of the inner end of the collarbone. It is not Tianzong, it is not on the shoulder blade, and it sits in the band above the collarbone where needling carries a documented pneumothorax hazard that the scapular point does not. The miscoding is named here rather than passed over because point codes are how this literature is searched and cross-referenced, and a wrong code sends a reader to the wrong anatomy. Every other study cited on this page was read rather than counted, and each prints SI 11 correctly.

How is SI-11 different from the points around it?

Jian Zhen SI-09 lies below and behind the armpit, at the bottom of the same channel's shoulder run. Nao Shu SI-10 lies above it, and is a Meeting Point of the Small Intestine and Bladder channels with the Yang Linking and Yang Motility Vessels — queried here. Bing Feng SI-12, above the scapular spine, is a Meeting Point of the Small Intestine, Large Intestine, Sanjiao and Gallbladder channels; Qu Yuan SI-13 sits at the inner end of the spine of the scapula. Jian Wai Shu SI-14 and Jian Zhong Shu SI-15 continue medially onto the upper back beside the vertebrae — and there the scapula no longer lies beneath, which is why the safety picture changes at those two and not at this one. All are held in this library, and all were queried. Among them SI-11 is the only one in the middle of the infraspinous hollow, and it is the one that carries the breast and chest actions.

Is there research on SI-11 Tian Zong?

Yes — and unusually for a point of the upper back, some of it is genuinely point-specific rather than protocol-wide. It is a small literature and a mixed one, and both halves are set out here.

• A randomised trial in which SI-11 was the variable. Sixty-two patients with obstinate tennis elbow were randomised to triple puncture at Tianzong SI-11 combined with local elbow points, or to the local elbow points alone. The cure rate was reported as 71.9 per cent in the Tianzong group against 43.3 per cent in the control group (Zhongguo Zhen Jiu 2007;27(2):109–11, PMID 17370492). This is the closest thing in the indexed literature to a test of what adding this point does, and it is notable that the target was the elbow rather than the shoulder — consistent with our own indication record, which carries pain of the lateroposterior elbow and arm at this point. The cautions belong with it: it is a single small study, the outcome is a categorical "cure rate" of limited reliability, and no sham control was used.
• Pressure pain thresholds measured at SI-11 by name — with a partly negative result. The Beijing matched case-control study described under how the point is used measured thresholds at SI-11, SJ-14, LI-15 and SI-09 in shoulder-pain patients and controls (PMID 28619769, PMC5541597). Thresholds at all four were lower on the painful side, but the association with the study's sensitisation indices was found at SJ-14, LI-15 and SI-09 and not at SI-11. The paper is cited here in full rather than for its favourable half.
• SI-11 as a core point in the breast literature. A complex-network analysis of 312 articles, 343 acupoint prescriptions and 113 acupoints used for breast hyperplasia identified Tianzong SI-11 among the sixteen core acupoints (PMID 33559431). That is a finding about prescribing practice, not about effect, and it is reported as such.
• The older breast literature. A 1982 report of 47 cases of acute mastitis treated with moxibustion at REN-17 and massage at Tianzong (PMID 6765696) is the earliest indexed item naming this point. It is an uncontrolled case series from a period with no trial standards, and it is recorded as a historical marker rather than as evidence.
• A paper on needling manipulation at Tianzong (PMID 11977520) exists in the indexed record without an abstract; its existence is noted and nothing is claimed from it.
• What is not here. There is no sham-controlled trial of SI-11, and no study in which it is isolated against a credible control for shoulder pain — the condition it is most used for. In the shoulder-pain trials it appears as one point among four or five, most often with LI-15, SJ-14 and SI-09, and nothing in those results is attributable to it alone. The infraspinatus dry-needling literature — including a randomised trial of exercise with and without trigger-point dry needling in subacromial pain syndrome (J Pain 2017;18(1):11–18, PMID 27720812) and a controlled study of segmental effects from needling shoulder trigger points (J Rehabil Med 2010;42(5):463–8, PMID 20544158) — concerns the muscle and does not name this or any acupoint. Those studies are cited to describe the surrounding evidence honestly, not to borrow their conclusions for SI-11.

Source: Sacred Lotus sources & references (name, translation, channel and the absence of point categories queried directly; the SI-09, SI-10, SI-12, SI-13, SI-14, SI-15, SI-16, SI-17 and ST-11 records queried directly); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 241); Chinese Acupuncture & Moxibustion (p. 171); PMID 17370492; PMID 28619769 (PMC5541597); PMID 33559431; PMID 6765696; PMID 11977520; PMID 12216598; PMID 27720812; PMID 20544158; PMID 18203637; PMID 19947274 (cited for its point-code error, not for its result) — each verified resolvable and checked for retraction status before citation; cross-referenced against multiple online sources.