8.2 Shaoyang Channels: San Jiao (SJ) and Gallbladder (GB) Points
Key Takeaways
Hand Shaoyang San Jiao (SJ 1 to SJ 23) regulates fluid metabolism across the Three Jiaos, resolves pivot-level Shaoyang patterns, treats temporal migraine and aural disorders via SJ 3, SJ 5, and SJ 17, and activates intestinal peristalsis for constipation via SJ 6 (Zhigou).
Foot Shaoyang Gallbladder (GB 1 to GB 44) traverses the lateral cranium, trunk, and leg, governing psycho-emotional decisiveness, sinew flexibility via GB 34 (Yanglingquan, Hui-Meeting of Sinews), marrow repletion via GB 39 (Xuanzhong), and girdle vessel drainage via GB 41 (Zulinqi, Master of Dai Mai).
Cranial and retroauricular points carry profound neurological hazards: GB 20 (Fengchi) must be angled toward the patient's nose or contralateral inner canthus (never cephalad or medially) to avoid puncturing the brainstem or vertebral artery; SJ 17 (Yifeng) requires cautious needle depth to avoid compressing the facial nerve or jugular vein.
GB 21 (Jianjing) represents a major exam cross-cutting hazard: it is strictly contraindicated in pregnancy due to its powerful downward-bearing Qi action that can precipitate premature labor, and it carries severe pneumothorax risk if punctured deeply over the apex of the lung.
8.2 Shaoyang Channels: San Jiao (SJ) and Gallbladder (GB) Points
Quick Answer: The Shaoyang ("Lesser Yang") channel axis serves as the physiological pivot (Shu) between the exterior Taiyang and interior Yangming, mediating thermoregulation, fluid dispersion, and lateral somatic mobility. Essential points evaluated on the NCCAOM exam include: SJ 3 (Zhongzhu, Shu-Stream for tinnitus and temporal headache), SJ 5 (Waiguan, Luo-Connecting and Master of Yang Wei Mai, expels wind-heat and treats Shaoyang syndrome), SJ 6 (Zhigou, Jing-River/Horary, premier point for constipation and hypochondriac pain/shingles), SJ 10 (Tianjing, resolves phlegm nodules and scrofula), SJ 14 (Jianliao, shoulder dysfunction), SJ 17 (Yifeng, facial paralysis and otitis), GB 1 (Tongziliao, eye disorders), GB 2 (Tinghui, jaw and ear pathology), GB 8 (Shuaigu, hangover and migraine), GB 14 (Yangbai, frontal headache and ptosis), GB 20 (Fengchi, primary point to extinguish internal/external wind, strict needle angulation toward the nose to avoid brainstem puncture), GB 21 (Jianjing, apex of trapezius, contraindicated in pregnancy and carries severe pneumothorax risk), GB 30 (Huantiao, sciatica and piriformis syndrome), GB 34 (Yanglingquan, He-Sea and Hui of Sinews, relaxes tendons and treats hypochondriac pain), GB 37 (Guangming, Luo-Connecting for night blindness and eye diseases), GB 39 (Xuanzhong, Hui of Marrow for stiff neck and stroke prevention), and GB 41 (Zulinqi, Shu-Stream and Master of Dai Mai for one-sided headache and breast distension).
Hand Shaoyang San Jiao Channel (SJ 1 – SJ 23)
The San Jiao channel originates on the ulnar aspect of the ring finger nail bed (SJ 1 Guanchong), passes between the 4th and 5th metacarpal bones (SJ 3 Zhongzhu), crosses the dorsum of the wrist (SJ 4 Yangchi), ascends between the radius and ulna (SJ 5 Waiguan, SJ 6 Zhigou), passes the olecranon fossa (SJ 10 Tianjing), climbs the lateral aspect of the shoulder posterior to the acromion (SJ 14 Jianliao), ascends the lateral neck, curves posterior to the earlobe (SJ 17 Yifeng), encircles the ear, enters the ear cavity, emerges anterior to the ear (SJ 21 Ermen), and terminates at the lateral extremity of the eyebrow (SJ 23 Sizhukong).
Clinical Themes of Hand Shaoyang
- The Shaoyang Pivot (Shaoyang Shu): Resolves alternating chills and fever, bitter taste in the mouth, dry throat, blurred vision, and hypochondriac fullness (classic Shang Han Lun Shaoyang stage disharmony).
- Aural and Cephalic Pathologies: The channel encircles the ear and penetrates deep into the auditory canal; SJ 1, SJ 3, SJ 5, SJ 17, and SJ 21 represent the premier point continuum for tinnitus, sensorineural deafness, otitis media, and acute ear pain.
- Lateral Shoulder and Arm Mobility: SJ 14 and SJ 5 treat local frozen shoulder, rotator cuff tendinopathy, and wrist contractures.
San Jiao Channel Point Master Reference
| Point | Pin Yin | Location | Category / Dynamic | Primary Actions & Indications | Needling Depth, Angle & Safety Cautions |
|---|---|---|---|---|---|
| SJ 1 | Guanchong | On ulnar side of ring finger, 0.1 cun proximal to corner of nail | Jing-Well (Metal) | Clears Upper Jiao Heat, benefits ear and throat, headache, febrile disease, irritability | 0.1 cun perpendicular or prick to bleed. |
| SJ 2 | Yemen | In depression 0.5 cun proximal to web margin between ring and little fingers | Ying-Spring (Water) | Clears Heat, benefits ears, temporal headache, dry mouth, pharyngitis, conjunctivitis | 0.3–0.5 cun oblique proximally. |
| SJ 3 | Zhongzhu | On dorsum of hand, between 4th and 5th metacarpal bones, in hollow 1 cun proximal to MCP joint | Shu-Stream (Wood); Tonification (Mother) point | Premier distal point for tinnitus, deafness, earache, one-sided temporal headache, finger and elbow stiffness | 0.5–0.8 cun perpendicular. Direct needle between metacarpal shafts. |
| SJ 4 | Yangchi | On transverse dorsal crease of wrist, in depression between tendons of extensor digitorum and extensor digiti minimi | Yuan-Source point | Relaxes sinews, clears Heat, strengthens Yuan Qi in diabetes/wasting-thirsting, wrist pain | 0.3–0.5 cun perpendicular. Avoid dorsal wrist veins. |
| SJ 5 | Waiguan | 2 cun superior to dorsal wrist crease, between radius and ulna, on radial border of extensor digitorum tendons | Luo-Connecting point; Confluent/Master of Yang Wei Mai | Premier point to expel exterior Wind-Heat, release Shaoyang syndrome, treat temporal migraine, acute torticollis, unblock channel | 0.5–1.0 cun perpendicular, or oblique 1.0–1.5 cun proximally. Puncture through to PC 6 (Tou Zhen) for severe paralysis. |
| SJ 6 | Zhigou | 3 cun superior to dorsal wrist crease, between radius and ulna, radial to extensor digitorum tendons | Jing-River (Fire); Horary point (9–11 PM) | Premier point for constipation (moves intestinal Qi), hypochondriac pain, intercostal neuralgia, herpes zoster (shingles) | 0.8–1.2 cun perpendicular. Frequently combined with KI 6 for dry stool. |
| SJ 10 | Tianjing | On posterior arm, 1 cun superior to olecranon tip, in depression when elbow is flexed 90 degrees | He-Sea (Earth); Son/Sedation point | Resolves Phlegm nodules, scrofula, goiter, axillary swelling, calms Shen, clears Heat, treats elbow joint arthritis | 0.5–1.0 cun perpendicular with elbow flexed. |
| SJ 14 | Jianliao | On shoulder, in depression posterior and inferior to acromion process when arm is abducted 90 degrees | Local point | Rotator cuff pain, frozen shoulder, bursitis, inability to raise arm | 1.0–1.5 cun perpendicular or angled downward into deltoid muscle when arm is abducted. |
| SJ 17 | Yifeng | Posterior to earlobe, in depression between mastoid process and angle of the mandible | Meeting point of SJ and GB channels | Premier point for facial paralysis (Bell's palsy), ear infections, tinnitus, deafness, parotitis (mumps), toothache | 0.5–1.0 cun perpendicular directed slightly anteriorly. Neurovascular caution: avoid deep posterior insertion toward internal jugular vein or facial nerve trunk. |
| SJ 21 | Ermen | Anterior to supratragic notch, in depression formed when mouth is opened | Local point | Tinnitus, deafness, otorrhea, temporomandibular joint (TMJ) dysfunction | 0.5–1.0 cun perpendicular with patient's mouth open. Instruct patient to relax jaw after needle is set. |
| SJ 23 | Sizhukong | In depression at lateral end of eyebrow | Local point | Eliminates Wind, alleviates pain; temporal headache, eye twitching, ptosis, red eyes | 0.3–0.5 cun transverse / subcutaneous directed posteriorly along the eyebrow. Moxibustion is classically contraindicated. |
Foot Shaoyang Gallbladder Channel (GB 1 – GB 44)
The Gallbladder channel is the longest and most topologically complex lateral channel in the body. It begins at the outer canthus (GB 1 Tongziliao), descends anterior to the intertragic notch (GB 2 Tinghui), arches across the temporal cranium (GB 8 Shuaigu), descends to the forehead (GB 14 Yangbai), sweeps back over the occiput (GB 20 Fengchi), traverses the trapezius apex (GB 21 Jianjing), zigzags across the lateral thorax (GB 24 Riyue, GB 25 Jingmen), crosses the hip joint at the greater trochanter (GB 30 Huantiao), descends the lateral thigh (GB 31 Fengshi), passes anterior and inferior to the fibular head (GB 34 Yanglingquan), descends along the anterior border of the fibula (GB 37 Guangming, GB 39 Xuanzhong), crosses the ankle (GB 40 Qiuxu), traverses the 4th metatarsal space (GB 41 Zulinqi), and terminates at the lateral nail corner of the 4th toe (GB 44 Zuqiaoyin).
Gallbladder Channel Point Master Reference
| Point | Pin Yin | Location | Category / Dynamic | Primary Actions & Indications | Needling Depth, Angle & Safety Cautions |
|---|---|---|---|---|---|
| GB 1 | Tongziliao | 0.5 cun lateral to outer canthus, in depression on lateral orbital border | Meeting point of GB, SI, and SJ | Clears Heat, benefits eyes; conjunctivitis, photophobia, lateral headache | 0.3–0.5 cun transverse directed posteriorly. Avoid transverse facial vessels. |
| GB 2 | Tinghui | Anterior to intertragic notch, at posterior border of condyloid process of mandible with mouth open | Local point | Tinnitus, acute deafness, TMJ dysfunction, facial paralysis, toothache | 0.5–1.0 cun perpendicular with mouth open. Mandibular condyle glides forward to reveal hollow. |
| GB 8 | Shuaigu | In temporal region, 1.5 cun superior to auricular apex | Meeting point of GB and BL | Premier point for alcohol hangover, one-sided migraine, vertigo, infantile convulsions | 0.5–1.0 cun transverse along scalp. |
| GB 14 | Yangbai | On forehead, 1 cun superior to midpoint of eyebrow, directly above pupil looking forward | Meeting point of GB, Yangwei, LI, ST, SJ | Frontal headache, eye pain, facial tic, ptosis, Bell's palsy | 0.3–0.5 cun transverse directed inferiorly into eyebrow or superiorly. |
| GB 20 | Fengchi | In depression between upper portion of sternocleidomastoid (SCM) and trapezius, level with Du 16 | Meeting point of GB, Yangwei, SJ, Yangqiao | Premier point to eliminate interior and exterior Wind: occipital headache, hypertension, vertigo, stiff neck, common cold | 0.8–1.2 cun angled toward the patient's nose or contralateral inner canthus. SEVERE CAUTION: Never direct needle superiorly into foramen magnum or medially into spinal canal. |
| GB 21 | Jianjing | Midpoint of line connecting C7 spinous process (Du 14) and lateral border of acromion, at trapezius apex | Meeting point of GB, Yangwei, SJ, ST | Relaxes sinews, unbinds neck/shoulder, promotes lactation, descends Qi | 0.5–0.8 cun perpendicular or posterior-oblique. CONTRAINDICATED IN PREGNANCY. SEVERE PNEUMOTHORAX RISK over apical pleural cupola. |
| GB 24 | Riyue | Directly below nipple, in the 7th intercostal space, 4 cun lateral to anterior midline | Front-Mu of Gallbladder | Clears Damp-Heat from Liver/GB, treats cholecystitis, gallstones, acid regurgitation, rib pain | 0.3–0.5 cun oblique along intercostal space. Puncture risk of underlying liver (right) or pleura. |
| GB 25 | Jingmen | On lateral abdomen, at lower border of free end of the 12th rib | Front-Mu of Kidney | Tonifies Kidney, regulates water passages, lumbar pain, nephrolithiasis, abdominal distension | 0.5–1.0 cun perpendicular. Severe caution: deep puncture can penetrate kidney parenchyma. |
| GB 30 | Huantiao | At junction of lateral 1/3 and medial 2/3 of line between greater trochanter and sacral hiatus | Meeting point of GB and BL | Premier point for sciatica, piriformis syndrome, lumbar radiculopathy, hemiplegia, hip pain | 2.0–3.5 cun perpendicular directed toward pubic symphysis with patient in lateral recumbent position (affected leg flexed). |
| GB 31 | Fengshi | On lateral thigh, 7 cun superior to popliteal crease; where middle finger touches when standing at attention | Local / Systemic point | Premier point for wind-heat skin rashes, urticaria, pruritus, hemiplegia, lateral leg numbness | 1.0–2.0 cun perpendicular. Reaches iliotibial tract. |
| GB 34 | Yanglingquan | In depression anterior and inferior to head of the fibula | He-Sea (Earth); Hui-Meeting point of Sinews; Lower He-Sea of Gallbladder | Dominates all sinews and tendons throughout body: relaxes cramping, treats hypochondriac pain, knee pain, hemiplegia, biliary colic | 1.0–1.5 cun perpendicular. Avoid common peroneal nerve posterior to fibular neck. |
| GB 37 | Guangming | 5 cun superior to lateral malleolus tip, on anterior border of fibula | Luo-Connecting point | Premier point for eye disorders: night blindness, optic atrophy, blurred vision, cataract, eye pain | 0.8–1.2 cun perpendicular. Directly benefits vision via internal Liver connection. |
| GB 39 | Xuanzhong (Juegu) | 3 cun superior to the prominence of the lateral malleolus, at the anterior border of the fibula (WHO 2008 and Cheng); Deadman describes it between the posterior border of the fibula and the peroneus tendons | Hui-Meeting point of Marrow | Dominates bone marrow: treats stiff neck, stroke prevention / post-stroke paresis, bone pain, osteoporosis | 1.0–1.5 cun perpendicular. Essential point for cervical rigidity. |
| GB 40 | Qiuxu | Anterior and inferior to lateral malleolus, in depression lateral to extensor digitorum longus tendon | Yuan-Source point | Spreads Liver Qi, clears GB Heat, benefits joints; lateral ankle sprain, indecisiveness, sighing | 0.5–1.0 cun perpendicular. Palpate tendon before insertion. |
| GB 41 | Zulinqi | On dorsum of foot, in depression distal to junction of 4th and 5th metatarsal bases | Shu-Stream (Wood); Horary point (11 PM–1 AM); Master of Dai Mai | Premier point for one-sided migraine headache, breast distension, mastitis, irregular menses, Dai Mai leukorrhea | 0.5–1.0 cun perpendicular. Combines with SJ 5 for temporal migraine. |
| GB 44 | Zuqiaoyin | On lateral side of 4th toe, 0.1 cun proximal to corner of nail | Jing-Well (Metal) | Clears Heat, benefits head, eyes, ears; insomnia, nightmares, temporal headache | 0.1 cun perpendicular or prick to bleed. |
High-Yield Clinical Hazards and Exam Red Flags
1. GB 20 (Fengchi) Needle Angulation and Medulla Hazard
GB 20 is one of the most frequently used points in acupuncture, but improper needle angulation can cause catastrophic central nervous system injury.
- Correct Angle: Point the needle toward the patient's tip of the nose (Bi Jian) or the contralateral inner canthus. Depth: 0.8–1.2 cun.
- Dangerous Angle: Pointing the needle superiorly and medially directly targets the foramen magnum and atlanto-occipital space. At depths exceeding 1.5 cun in this direction, the needle tip can puncture the vertebral artery (causing subarachnoid hemorrhage) or penetrate the medulla oblongata (causing immediate respiratory arrest, vasomotor collapse, and death).
+----------------------------------------------------------------------------+
| GB 20 (FENGCHI) NEEDLE ANGULATION SAFETY |
+----------------------------------------------------------------------------+
| [FORBIDDEN DIRECTION] |
| Superior & Medial (Toward Foramen Magnum) |
| | |
| v |
| [Fatal Puncture of Medulla Oblongata / Vertebral Artery] |
| |
| [CORRECT SAFE DIRECTION] |
| Angled Toward Tip of Patient's Nose or Contralateral Eye |
| | |
| v |
| [Safe Penetration of Suboccipital Musculature] |
+----------------------------------------------------------------------------+
2. GB 21 (Jianjing) Dual Danger: Pneumothorax and Pregnancy
GB 21 sits on the highest ridge of the trapezius muscle. Underneath this muscular ridge lies the cupola (apex) of the lung, which extends 1 to 2 cm superior to the clavicle.
- Pneumothorax Mechanism: Puncturing perpendicularly down into the muscle belly to a depth greater than 0.8–1.0 cun in a slender patient easily penetrates the apical pleura. Patients may experience sudden coughing, chest tightness, and progressive shortness of breath hours after treatment.
- Pregnancy Prohibition: GB 21 possesses an intensely powerful descending energetic dynamic (Jiang Qi). In classical texts, it is used to expedite delivery, expel retained placenta, or promote delayed labor. Consequently, GB 21 is strictly contraindicated during all trimesters of pregnancy due to the risk of precipitating uterine contractions and miscarriage.
When inserting an acupuncture needle into GB 20 (Fengchi), which anatomical trajectory must be maintained to avoid entering the foramen magnum and puncturing the medulla oblongata?
Angle the needle perpendicularly toward the contralateral mastoid process at a depth of 2.0 cun
Angle the needle superiorly toward the vertex of the cranium at a depth of 1.5 cun
Direct the needle tip toward the patient's tip of the nose or contralateral inner canthus at a depth of 0.8 to 1.2 cun
Direct the needle tip medially and slightly upward toward the external occipital protuberance at a depth of 1.5 cun
A 28-year-old pregnant woman in her second trimester presents with severe neck and shoulder tension. Which point is strictly contraindicated due to its strong downward-bearing action and high risk of inducing premature uterine contractions, while also carrying a life-threatening risk of apical pneumothorax?
GB 21 (Jianjing)
SJ 14 (Jianliao)
GB 34 (Yanglingquan)
SJ 5 (Waiguan)
A 52-year-old male presents with persistent constipation characterized by dry, hard stools and difficulty evacuating, accompanied by severe hypochondriac distension and intercostal pain following a recent emotional upheaval. Which San Jiao channel point is considered the premier distal selection to move Qi in the Lower Jiao and bowels while simultaneously freeing hypochondriac constraint?
SJ 1 (Guanchong)
SJ 3 (Zhongzhu)
SJ 5 (Waiguan)
SJ 6 (Zhigou)
An acupuncturist evaluates an elderly patient who recently suffered an ischemic stroke, presenting with spastic muscular contractures in the hemiplegic leg, persistent neck stiffness, and general weakness of the sinews. Which pair of Gallbladder channel Hui-Meeting points should be selected to treat both the sinew contractures and the marrow/cervical rigidity?
GB 20 (Fengchi) and GB 21 (Jianjing)
GB 34 (Yanglingquan) and GB 39 (Xuanzhong)
GB 30 (Huantiao) and GB 40 (Qiuxu)
GB 37 (Guangming) and GB 41 (Zulinqi)
Sections you finish are checked off in the contents.