LOCATION
On the dorsum of foot, between the fourth and fifth toe, proximal to the margin of the web, at the junction of the red and white skin.
Features
Ying/spring point. Water point. Mother/Reinforcing point.
Body Inches (cun)
Each person has his/her own personal body inches.
One cun is equal to the width of the Knuckle of the thumb.
Nerves, vascular
Dorsal toe nerves and dorsal toe arteries and veins.
Indication
Lower limb paralysis，sciatica，intercostal nerve pain，migraine；stroke，hypertension；tinnitus，deafness，axillary tuberculosis，lymphadenitis，hemoptysis，mastitis. Ying Spring Point – clears heat from the entire channel. Effects opposite end of the channel – headaches, dizziness, tinnitus, eye a/or ear pain. GB Damp Heat stagnations in the channel – swelling in axillary region, lateral costal pain, breast abscesses, knee pain.
Use for external wind heat affecting ears and eyes.
Important for pain in outer canthus.
Combinations
Fever：LI 04 & SI 05 & SI 04 & PC 08 & LI 01 & GB 43 & 7.ST 45.
Headache：GB 43 & EX-HN5 & GB 08 & GB 20.
Tinnitus，deafness：GB 43 & SI 19 & TE 17.
Swollen jawlockjaw：SI 05 & GB 43.
Swollen cheek：1.LI 19 & ST 06 & GB 43.
Edema of the axillary，saber fistula ：GB 38 & LR 03 & GB 43.
Chest and hypochondrium pain：GB 43 & TE 06 & GB 34.
Outside of the knee pain：GB 33 & GB 43.
穴位
在足背部，第四、五趾縫間，趾蹼緣後方赤白肉際處。
特點
滎（水）穴。
同身寸
針灸取穴比量法。出自《千金要方》。
是指以患者本人體表的某些部位折定分寸，
作为量取穴位的長度單位。
穴區神經血管
趾背神經和趾背動、靜脈。
適應症
下肢麻痺，坐骨神經痛，肋間神經痛，偏頭痛；腦卒中，高血壓；耳鳴，耳聾，腋淋巴結炎，咳血，乳腺炎。
穴位配伍療法
發熱：1.合谷 2.陽谷 3.腕骨 4.勞宮 5.商陽 6.俠溪 7.厲兌
少陽頭痛：1.俠溪 2.太陽 3.率谷 4.風池
耳鳴，耳聾：1.俠溪 2.聽宮 3.翳風
頷腫口噤：1.陽谷 2.俠溪
頷頰腫：1.禾髎 2.頰車 3.俠溪
腋下腫、馬刀瘻：1.陽輔 2.太衝 3.俠溪
胸脅痛：1.俠溪 2.支溝 3.陽陵泉
膝外廉痛：1.膝陽關 2.俠溪