尺澤 (Chǐzé) — Cubit Marsh
Lung channel · point 5
Traditionally used for
- Nose & throat
- Cough & breathing
- Colds & fever
- Digestion
- Bowel health
- Nerves & recovery
Location
On the anterior aspect of the elbow, at the cubital crease, in the depression lateral to the biceps brachii tendon.
How to locate: Flex the elbow slightly; the biceps tendon stands out at the centre of the crease. The point is in the hollow immediately to its thumb side, between LI11 and PC3, separated from PC3 by the tendon.
Regional anatomy: The radial nerve lies laterally and the brachial artery medially to the biceps tendon.
Distances are in cun, a proportional unit — how to measure.
3D view
3D view not available for this point: its position on the 3D model couldn't be checked against its location text, so it is not shown. The 2D maps above show it.
Needling
Cited needling
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Perpendicular insertionDepth 0.5–1 cunskindeeper
Depths describe average adult habitus in the cited population, never a single safe number for the patient in front of you. Palpate and adjust.
Sources (1)
- Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Hove: Journal of Chinese Medicine Publications; 1998 — p. 80 Supports: techniques (names this point)
Site notes · not cited
Functions
- Clears heat from the Lung and descends rebellious qi
- Regulates the water passages
- Relaxes the sinews and activates the channel
- Drains damp-heat and resolves phlegm
Indications
Balance Method partners
Under Dr. Tan's six systems, LU5 at the elbow balances these channels at the regions its segment images.
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1. Same Chinese nameSpleen channelKnee, Back of knee · Mirror (arm ↔ leg)Knee, Back of knee · Reversed mirrorUpper abdomen, Lower back · Image, head at the hand/footChest, Upper back · Image, head toward the elbow/kneeSolve for the Spleen channel →
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2. Branching (Bie Jing / Zang Fu Bie Tong)Bladder channelKnee, Back of knee · Mirror (arm ↔ leg)Knee, Back of knee · Reversed mirrorUpper abdomen, Lower back · Image, head at the hand/footChest, Upper back · Image, head toward the elbow/kneeSolve for the Bladder channel →
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3. Interior–exterior pairLarge Intestine channelElbow · Same segment, opposite sideUpper abdomen, Lower back · Image, head at the hand/footChest, Upper back · Image, head toward the elbow/kneeSolve for the Large Intestine channel →
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4. Chinese clock oppositeBladder channelKnee, Back of knee · Mirror (arm ↔ leg)Knee, Back of knee · Reversed mirrorUpper abdomen, Lower back · Image, head at the hand/footChest, Upper back · Image, head toward the elbow/kneeSolve for the Bladder channel →
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5. Chinese clock neighbourLiver channelKnee, Back of knee · Mirror (arm ↔ leg)Knee, Back of knee · Reversed mirrorUpper abdomen, Lower back · Image, head at the hand/footChest, Upper back · Image, head toward the elbow/kneeSolve for the Liver channel →
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6. Same channelLung channelElbow · Same segment, opposite sideUpper abdomen, Lower back · Image, head at the hand/footChest, Upper back · Image, head toward the elbow/kneeSolve for the Lung channel →
Classical calendar method · 子午流注
When the tables open LU5
The hours Zi Wu Liu Zhu names this point at, by method. Times are the double-hour's start in UTC.
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辛未 13:00–15:00 Na Jia Fa, 癸-day sequence · He-Sea (合)
「辛未肺經合尺澤」
Next: Sat 17 Oct, 13:00
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寅 03:00–05:00 Na Zi Fa, LU channel · reduce (瀉)
「瀉用寅時，尺澤，為合水，金生水，為子」
Next: Fri 16 Oct, 03:00
A classical reference, not a recommendation: the tables say when the method opens this point, not that it is the point to needle. Open points by the hour →
Clinical Notes
Combinations Using This Point
Balance Method for Low Back Pain — Lung Channel Image
Low back pain on the Bladder channel treated from the Lung channel of the opposite forearm, with the patient moving the back during retention.
Chize and Quze
LU5 and PC3, the He-Sea points either side of the biceps tendon — for cough, wheeze, sore throat, vomiting and diarrhoea, and elbow spasm.
Balance Method for Knee Pain
Knee pain treated at the elbow of the opposite arm, on the channel that corresponds to the aspect of the knee involved.
Similar Points
Ranked by shared patterns and conditions
Sources
- World Health Organization. WHO Standard Acupuncture Point Locations in the Western Pacific Region. Manila: WHO Regional Office for the Western Pacific, 2008. (Location.)
📝 Notes
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