GB-30 (Huan Tiao) Jumping Round

What does GB-30 Huan Tiao do?

Huan Tiao GB-30 is the great point of the hip and the whole lower limb — the point the tradition reaches for first when pain runs from the buttock down the leg. Sacred Lotus sources & references classify it as a Meeting Point of the Gall Bladder and Bladder channels, and that pairing is the key to it: the Gall Bladder channel runs down the outer side of the leg and the Bladder channel down the back of it, so a single point where they meet reaches both of the two lines along which sciatic-type pain most often travels. It is also one of the Ma Dan-yang Heavenly Star points, the short classical list of the points held to be sufficient for most disorders.

• Activates the channel and alleviates pain — the primary recorded action, and the reason for almost every clinical use of the point. It is applied to pain that radiates rather than pain that stays put.
• Benefits the hip joint and the leg — for restricted, painful or weak movement at the hip, difficulty in rotating the thigh, and the inability to raise or turn the leg.
• Dispels wind-damp — the recorded action behind its use in the classical bi (painful obstruction) syndromes, where cold and damp are held to have lodged in the channels of the lower limb.
• Reaches both the Gall Bladder and the Bladder channels at once — a consequence of its meeting-point classification rather than a separate action, but a practically important one: it is chosen regardless of which of the two lines the pain follows.
• Treats atrophy and paralysis of the lower limb — the classical wei (flaccidity) patterns and the leg weakness that follows windstroke.

Source: Sacred Lotus sources & references (channel, meeting-point and Heavenly Star classifications, existing action record); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 446); Chinese Acupuncture & Moxibustion (p. 217); cross-referenced against multiple online sources.

What is GB-30 Huan Tiao used for?

Huan Tiao GB-30 is used for pain and dysfunction of the hip, buttock and leg — most of all for pain radiating down the back or outer side of the thigh. The indications below are those carried in Sacred Lotus sources & references and set out in the standard reference literature. They describe traditional use, not proven treatment, and this point carries the safety facts set out under needling.

• Pain of the lumbar region and the thigh
• Pain radiating from the buttock down the back or outer side of the leg (sciatic-type pain)
• Pain and restricted movement of the hip joint
• Inability to rotate the thigh, or to turn over in bed
• Muscular atrophy and weakness of the lower limbs
• Hemiplegia and the leg weakness following windstroke
• Painful obstruction (bi) of the lower limb attributed to wind, cold and damp
• Numbness of the leg and foot
• Coldness and heaviness of the leg
• Urticaria and itching skin conditions, recorded in the classical lists

Source: Sacred Lotus sources & references (existing indication record); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 446); Chinese Acupuncture & Moxibustion (p. 217).

Where is GB-30 Huan Tiao, and how is it used in practice?

Huan Tiao lies deep in the buttock, on a line drawn from the bony prominence at the side of the hip — the greater trochanter — back to the hollow at the base of the sacrum where Yao Shu DU-02 sits. Sacred Lotus sources & references place it at the junction of the outer third and the inner two-thirds of that line, and record that the point is located with the person lying on their side with the upper thigh flexed. That position is not incidental: flexing the hip rolls the gluteal muscles and brings the landmark line into a reproducible shape. It is one of the very few points whose location instruction includes the posture in which to find it.

Which points is GB-30 combined with?

• With Wei Zhong BL-40 — the classical distal pairing for the back and leg. BL-40, behind the knee, is one of the four Command points, the one that commands the lumbar region and back; GB-30 and BL-40 together run the length of the Bladder line.
• With Yang Ling Quan GB-34 — the Hui-Meeting point of the sinews, below the knee on the same channel. GB-30 proximal and GB-34 distal is the standard Gall Bladder-channel pairing for the leg, and it is the pairing most often carried into experimental work on nerve recovery.
• With Zhi Bian BL-54 — the Bladder-channel point of the buttock, lying medial to GB-30, used with it when the pain follows the back of the leg rather than the side.
• With Cheng Fu BL-36 and Feng Shi GB-31 — the next points down the back and the outer side of the thigh respectively, added to follow the pain along its line.
• With Ju Liao GB-29 — the Gall Bladder point in front of GB-30 at the hip, a meeting point with the Yang Motility vessel; the two together surround the hip joint.
• With the lumbar points — Shen Shu BL-23 and the Hua Tuo Jia Ji paravertebral extra points held here, when the leg pain is traced to the lower back rather than to the hip itself.
• Method — Sacred Lotus sources & references record moxibustion as applicable at this point.

Where does GB-30 sit among its category peers?

GB-30 is not a five-shu, yuan, luo or xi-cleft point. It carries two classifications in Sacred Lotus sources & references, and each explains part of its use. It is a Meeting Point of the Gall Bladder and Bladder channels — a category chosen when one needle is wanted to influence more than one channel, and the reason GB-30 covers both lines of the leg. And it is one of the Ma Dan-yang Heavenly Star points, the compact classical set attributed to the Jin-dynasty physician Ma Dan-yang and held to be sufficient for the great majority of disorders. Sacred Lotus sources & references carry twelve points in that set: LI-04 He Gu, LI-11 Qu Chi, LU-07 Lie Que, HT-05 Tong Li, ST-36 Zu San Li, ST-44 Nei Ting, BL-40 Wei Zhong, BL-57 Cheng Shan, BL-60 Kun Lun, GB-30 Huan Tiao, GB-34 Yang Ling Quan and LIV-03 Tai Chong. GB-30 is the set's representative for the hip and the whole lower limb — and note that BL-40 and GB-34, its two commonest partners, are in the same list.

Source: Sacred Lotus sources & references (location, categories, full Heavenly Star set); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 446); Chinese Acupuncture & Moxibustion (p. 217); cross-referenced against multiple online sources.

Where is GB-30 located?

• A Manual of Acupuncture (p. 446): On the postero-lateral aspect of the hip joint, one third of the distance between the prominence of the greater trochanter and the sacro-coccygeal hiatus (Yaoshu DU-2).
• Chinese Acupuncture and Moxibustion (p. 217): At the junction of the lateral 1/3 and medial 2/3 of the distance between the prominence of the great trochanter and the hiatus of the sacrum (Yaoshu, GV 2). When locating the point, put the patient in lateral recumbent position with the thigh flexed.

How is GB-30 Huan Tiao needled, and why is it a high-risk point?

The central safety fact about this point must be stated before anything else: the sciatic nerve — the largest nerve in the human body, roughly the width of a finger where it leaves the pelvis — passes directly beneath GB-30, and GB-30 is one of the deepest-needled points in the entire repertoire. The two facts belong together. A point that is needled to a depth of two inches or more, over a nerve that lies in exactly that plane, is a point where contact with the nerve is an anatomical possibility rather than a remote one. Everything below is recorded as neutral reference data describing what the textbooks and the published anatomical studies state. It is not instruction, and this page does not teach technique. Needling is carried out only by a qualified, licensed practitioner.

The angle and depth the texts record

• Sacred Lotus sources & references record perpendicular insertion of 1.5 to 2.5 inches, with moxibustion applicable. For comparison, the figure held here for GB-21 at the shoulder is 0.3 to 0.5 inch and for REN-12 on the abdomen 0.5 to 1.2 inches — GB-30 is recorded at roughly five times the depth of a typical trunk point.
• Chinese Acupuncture & Moxibustion (p. 217) and Deadman & Al-Khafaji (p. 446) both record deep perpendicular insertion at this point, and the reference literature describes the propagated sensation travelling down the leg as the response sought — which is a description of the nerve responding.
• Position — the reference texts record the point being located and needled with the person lying on their side with the upper hip and knee flexed. That posture changes the thickness and the relationship of the gluteal muscles, so it is part of the recorded depth figure, not separate from it.

The anatomy beneath the point

The needle path at GB-30 passes through skin and subcutaneous fat, then gluteus maximus, then the deeper gluteal layer, and arrives in the plane occupied by the piriformis muscle and, immediately below piriformis, the sciatic nerve as it emerges from the greater sciatic foramen. The superior and inferior gluteal vessels and nerves run in the same region. There is no intervening bone, membrane or fascial plane that stops a needle short of the nerve — only muscle thickness, and muscle thickness varies enormously between people.

• Depth to the sciatic nerve has been measured, and it is highly variable. An ultrasound study of 50 volunteers aged 18–45 measured sciatic nerve depth in the gluteal region and the posterior thigh and built a prediction model from body measurements. The single best predictor of nerve depth was proximal thigh circumference, which explained 44.5 per cent of the variance; adding sex raised this to 49.7 per cent. The authors' stated purpose was to let clinicians estimate nerve depth in order to reduce the risk of accidental nerve injury during needle-based procedures (Minguez-Esteban I et al., J Clin Med 2024;13(24):7851, PMID 39768773). The finding that matters here is the residual: roughly half the variation in how deep the nerve lies is not explained by body measurements at all.
• The point has been reconstructed in three dimensions specifically to study needle safety. A Chinese study segmented the muscles, nerves and vessels around Huantiao in a digitised human dataset and animated the insertion path through them, stating its objective as exploring the safety of needle insertion at this point (Zhongguo Zhen Jiu 2012;32(10):897–900, PMID 23259265). That a point should require a virtual-anatomy model to map its needle path is itself a statement about the point.
• No single agreed safe depth exists for any acupuncture point. Two systematic reviews of the safe-depth literature — 33 studies in the first, 47 in the second, measured by MRI, CT, ultrasound and cadaveric dissection — both concluded that depths measured for the same point differ greatly between subject groups and between measuring methods, and that the definition of "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).

The nerve-injury signal

A sudden electric-shock sensation during needling is not a normal needling sensation. A review examined this directly, tracing the history of the recognised needling sensations, noting that the electric shock is included in some acupuncture sensation scales and excluded from others, and collating reported cases of acupuncture-related nerve injury in which the shock preceded the injury. Its conclusion is that the electric shock is caused by the needle entering a nerve directly, and that it should be treated as a warning sign of possible peripheral nerve injury rather than as a sign of correct technique (Guo Y et al., Neural Plast 2020;2020:8834573, PMID 33204248, PMC7655260). This is recorded here as a safety fact about a class of point of which GB-30 is the leading example. The distinction is a fine one and is genuinely contested in the literature — the propagated sensation down the leg that the classical texts describe at this point and a nerve-injuring contact are not easy to separate — which is precisely why it belongs on this page.

Risk in proportion. A meta-analysis of prospective clinical studies estimated serious adverse events at approximately 1 per 10,000 patients and about 8 per million treatments, with roughly half of all recorded events being bleeding, pain or flare at the needle site (Bäumler P et al., BMJ Open 2021;11:e045961, PMID 34489268). A systematic review of the Chinese case-report literature from 1956 to 2010 identified 1,038 adverse-event cases across 167 articles and attributed them chiefly to improper technique, concluding that most were avoidable through standardised training (He W et al., J Altern Complement Med 2012;18(10):892–901, PMID 22967282). Serious harm at GB-30 is uncommon in absolute terms. The point is that where it does occur, the structure at risk is identifiable in advance.

Source: Sacred Lotus sources & references (existing needling record); Deadman & Al-Khafaji, A Manual of Acupuncture (p. 446); Chinese Acupuncture & Moxibustion (p. 217); PMID 39768773; PMID 23259265; PMID 21417806; PMID 23935678; PMID 33204248; PMID 34489268; PMID 22967282 — each record checked as active and not retracted.

What does the name Huan Tiao mean?

Huan Tiao means "Jumping Round" — huan, a ring or circle, and tiao, to jump or leap. Two readings of the name are given in the commentaries and both are informative. The first is postural: the point is located with the person lying on their side and the upper leg drawn up, a position in which the flexed thigh and the trunk together make a ring shape, and the classical instruction is essentially "curl up and jump" — the posture in which the point can be found. The second is functional: tiao, to leap, describes what a working hip lets a person do, and the name records the point's claim on the hip that jumps. The English rendering "Jumping Round" preserves both senses at once.

Why does it matter that GB-30 is a meeting point and a Heavenly Star point?

• Meeting Point of the Gall Bladder and Bladder channels. Meeting points are where two or more channels cross, and they are chosen when one needle should influence all of them. This is the reason GB-30 does not have to be matched to the line the pain follows: pain down the outer thigh belongs to the Gall Bladder channel, pain down the back of the thigh to the Bladder channel, and GB-30 sits on both. Sacred Lotus sources & references record the same Gall Bladder-and-Bladder meeting at Shuai Gu GB-08 on the head and at Ci Liao BL-32 on the sacrum.
• Ma Dan-yang Heavenly Star point. The Heavenly Star points are a compact classical set — twelve in the version held here — presented as sufficient for the great majority of disorders, and set out in verse so that they could be memorised. Membership marks a point as one of the medicine's essential few rather than as a specialist choice. GB-30 is the set's point for the hip and the lower limb.

Is there research on GB-30 Huan Tiao?

There is a real point-specific literature on GB-30, and it is unusually well aligned with the point's anatomy: nearly all of it concerns the sciatic nerve. The clinical trials are small and single-centre and none is placebo-controlled, so they establish plausibility rather than efficacy.

• Piriformis syndrome, clinical. A randomised controlled trial of 76 patients tested adding a specific needling method at Huantiao GB-30 to a routine protocol that both groups received. Symptom and sign scores, hip pain and pain visual-analogue scores all fell further in the group that received the added needling, and — the useful part — musculoskeletal ultrasound showed a greater reduction in piriformis muscle thickness in that group, with a total effective rate of 97.2 per cent against 86.1 per cent (Zhongguo Zhen Jiu 2026;46(6):895–900, PMID 42343514). The objective ultrasound outcome and the add-on design make this the most informative clinical study located for the point. It was not blinded.
• Sciatica from disc herniation, clinical. A randomised trial of 100 patients compared two needling techniques at the same point, Huantiao — a classical compound manipulation against routine needling — reporting greater reductions in pain and disability with the compound technique (Altern Ther Health Med 2023;29(7):376–381, PMID 37535908). Because both arms were needled at GB-30, this study says something about technique and nothing about whether the point itself outperforms a control location.
• Depth as an experimental variable. A rat study compared deep and shallow electroacupuncture at Huantiao GB-30 on markers of apoptosis in dorsal root ganglion neurons (Zhen Ci Yan Jiu 2019;44(10):729–34, PMID 31657162). It is worth noting only that depth at this point is treated as a live variable in the experimental literature, not as a settled parameter.
• Nerve regeneration, preclinical. Electroacupuncture at Huantiao GB-30 with Zu San Li ST-36 promoted peripheral nerve regeneration in mice, with the authors attributing the effect to enhanced energy metabolism (Neuroreport 2025;36(14):874–885, PMID 40874859); acupuncture at Huantiao GB-30 with Yang Ling Quan GB-34 likewise promoted nerve regeneration in a mouse model of peripheral nerve injury (IBRO Neurosci Rep 2023;15:158–164, PMID 37664821). Both used the two-point combinations described above under practice.
• The field, mapped. A bibliometric analysis of the acupuncture literature on sciatic nerve injury charted the growth and the main clusters of this research area (Front Neurol 2024;15:1432249, PMID 39811451).

What is missing should be said plainly: despite GB-30 being the first point most practitioners reach for in sciatic-type leg pain, no adequately powered randomised trial has isolated this single point against a credible control for that indication. The trials that exist compare techniques at the point, or add it to a protocol, or test it in animals.

How does GB-30 compare with the points around it?

Zhi Bian BL-54 lies medial to GB-30 on the Bladder channel and is its closest rival for deep gluteal work; it is weighted toward the lower back, the anus and the genitourinary complaints, where GB-30 is weighted toward the hip and the radiating leg. Ju Liao GB-29 sits in front of GB-30 at the hip and is a meeting point with the Yang Motility vessel; it addresses the hip joint from the front. Cheng Fu BL-36, in the crease under the buttock, is the next point down the Bladder line and is often tender in the same presentations. Feng Shi GB-31 continues the Gall Bladder line down the outer thigh. Huan Zhong, an extra point held here between GB-30 and DU-02, occupies the same deep gluteal territory and carries the same anatomical considerations. And Yao Yan, the lumbar extra point held here, is the local point for the lower back when the pain has not yet travelled into the leg. Among all of these, GB-30 remains the deep, central point of the buttock — the one whose recorded needling depth is greatest and whose anatomy demands the most respect.

Source: Deadman & Al-Khafaji, A Manual of Acupuncture (p. 446); Chinese Acupuncture & Moxibustion (p. 217); Sacred Lotus sources & references (categories, Heavenly Star set, neighbouring and extra points held here); PMID 42343514; PMID 37535908; PMID 31657162; PMID 40874859; PMID 37664821; PMID 39811451 — each checked as active and not retracted; cross-referenced against multiple online sources.