LOCATION
On the medial side of the foot, posterior to the medial malleolus, in the depression between the tip of the medial malleolus and calcaneal tendon.
Features
Yuan/Source 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
Posterior tibial arteries and veins, medial cutaneous nerves of the calves, tibial nerves, etc.
Indication
Nephritis，cystitis，spermatorrhea，enuresis；emphysema，bronchitis，asthma；Chronic pharyngolaryngitis，stomatitis，tinnitus；paralysis of the lower limbs，calcaneus pain，psoas strain；endocarditis，neurasthenia，mastitis，chest pain。Tonify KI Qi, Yin or Yang Deficiencies from any etiology. Asthma from KI Deficiency – difficulty inhaling. Tonifies Yin of KI (chronic sore throat, empty heat), LR (dizziness, tinnitus, headache) a/or HT (anxiety, insomnia, excessive dreaming). Tonifies Yang of KI (impotence, premature ejaculation, seminal emission, weak low back/knees, frequent urination). Low back pain, usually of a chronic nature. Local point for heel a/or ankle pain.
Combinations
Headache dizziness ：BL 58
(Combining source and network points)
Vertigo，dizziness，fainting ：GB 12 & KI 03 & LR 03.
Dry pharynx ， phlegmy ：SI 01 & KI 03.
Pharyngeal swelling：SI 03 & KI 03.
Faucitis，toothache：KI 03 & SI 01.
Toothache caused by kidney insufficiency：ST 07 & ST 06 & KI 03.
Nosebleeding：GV 27 & GB 19 & BL 12 & KI 03 & GB 14.
Spermatorrhea，asynodia，caused by kidney Insufficiency，lumbago：KI 03 & BL 23 & 3.BL 52.
Swelling foot and leg：KI 03 & BL 60 & BL 62.
Insomnia and dreaminess：HT 07 & SP 06 & KI 03.
穴位
在足內側，內腳踝後方與肌腱連線的中間點。
特點
原（土）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
脛後動、靜脈，小腿內側皮神經，脛神經等。
適應症
腎炎，膀胱炎，遺精，遺尿；肺氣腫，支氣管炎，哮喘；慢性喉炎，口腔炎，耳鳴；下肢癱瘓，足跟痛，腰肌勞損；心內膜炎，神經衰弱，乳腺炎，膈肌痙攣。
穴位配伍療法
頭痛目眩 ：1.飛揚 (原絡配穴法)
眩暈 ：1.完骨 2.太溪 3.太衝
咽中乾、口中熱唾如膠：1.少澤 2.太溪
咽腫：1.中渚 2.太溪
咽喉炎，牙痛：1.太溪 2.少澤
腎虛牙痛：1.下關 2.頰車 3.太溪
鼻血不止：1.兌端 2.腦空 3.風門 4.太溪 5.穩白
遺精，陽痿，腎虛腰痛：1.太溪 2.腎俞 3.志室
腿足腫紅：1.太溪 2.崑崙 3.申脈
失眠多夢：1.神門 2.三陰交 3.太溪