TB8 (Sānyángluò, “Three Yang Connecting Point”) is the Luo-Connecting Point of the Three Hand Yang Channels point of the Triple Burner Meridian. It is located on the dorsal aspect of the forearm, 4 cun proximal to the dorsal wrist crease, between the radius and the ulna. This is 1 cun proximal to Zhigou (TB6). It unblocks the channels and connecting vessels, clears heat, resolves obstruction, opens the orifices, and calms the spirit.
On the dorsal aspect of the forearm, 4 cun proximal to the dorsal wrist crease, between the radius and the ulna. This is 1 cun proximal to Zhigou (TB6).
Perpendicular insertion 0.5 to 1.2 cun.
Unblocks the channels and connecting vessels, clears heat, resolves obstruction, opens the orifices, and calms the spirit.
Sudden deafness, sudden muteness or aphonia, toothache,somnolence, body does not want to move, internal injury, deficiency.
Classically, Sanyangluo is a crucial point for acute conditions affecting the sensory orifices, particularly sudden deafness and muteness. Its function extends to systemic issues like somnolence and a feeling of bodily heaviness or unwillingness to move. Despite the strong classical prohibition on needling, it was clearly used in combinations, suggesting that moxibustion was the primary method of stimulation for its indications.
Classical text; the translation was prepared with AI and is not clinical advice.
《針灸逢源》 Zhēnjiǔ Féngyuán — Sources of Acupuncture & Moxibustion, Li Xuechuan, 1815 · 卷四 · 經穴考正 · 手少陽三焦經穴考 · Source: jicheng.tw ↗
三陽絡（一名通門） 在臂上大交脈支溝上一寸（針一分。 灸五壯）治暴喑耳聾According to this text, TB8 (also called Tongmen) lies on the great crossing vessel of the forearm, 1 cun above Zhigou, needled 0.1 cun with 5 moxa cones, and was used for sudden loss of voice and deafness.
《針方六集》 Zhēnfāng Liùjí — Six Collections on Needling, Wu Kun, 1618 · 卷之一·神照集 · 手少陽三焦經圖穴十七 · 手少陽三焦經所發二十三穴 · Source: jicheng.tw ↗
三陽絡二穴，在臂上大交脈，支溝上一寸。 《針經》禁刺，灸七壯According to this text, TB8 lies on the great crossing vessel of the forearm, 1 cun above Zhigou; the Zhenjing forbids needling it and gives 7 moxa cones.
《針灸大成》 Zhēnjiǔ Dàchéng — Great Compendium of Acupuncture & Moxibustion, 1601 · 卷八 · Source: Wikisource ↗
三陽絡（一名通門）臂上大交脈，支溝上一寸。 銅人灸七壯，明堂灸五壯，禁針According to this text, TB8 (also called Tongmen) lies on the great crossing vessel of the forearm, 1 cun above Zhigou; the Tongren gives 7 moxa cones, the Mingtang 5, and needling is forbidden.
《針灸甲乙經》 Zhēnjiǔ Jiǎyǐ Jīng — Systematic Classic of Acupuncture & Moxibustion, c. 256–282 · 卷10 · Source: Wikisource ↗
嗜臥，身體不能動搖，大溫（一本作濕），三陽絡主之The text records that TB8 was used for somnolence with a body that cannot move, and great warmth (one variant reads dampness).
TB8 is one of 23 points on the Triple Burner Meridian. Nearby points:
TB8 (Sānyángluò) is located on the dorsal aspect of the forearm, 4 cun proximal to the dorsal wrist crease, between the radius and the ulna. This is 1 cun proximal to Zhigou (TB6).
TB8 unblocks the channels and connecting vessels, clears heat, resolves obstruction, opens the orifices, and calms the spirit. Common clinical indications include sudden deafness, sudden muteness or aphonia, toothache,somnolence, body does not want to move, internal injury, deficiency.
Perpendicular insertion 0.5 to 1.2 cun. Caution: Multiple classical sources, including the Jia Yi Jing, Qian Jin Yao Fang, Qian Jin Yi Fang, and Zhen Jiu Da Cheng, explicitly prohibit needling this point.
TB8 is a point on the Triple Burner Meridian (Sān Jiāo).