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SP1

Yinbai

Star

隱白 (Yǐnbái) — Hidden White

Spleen channel · point 1

Not yet clinically reviewed

Jing-Well pointWood pointWood point of the Spleen channel

Traditionally used for

  • Nose & throat
  • Digestion
  • Menstrual & women's health
  • Sleep
  • Mood & calm
  • Nerves & recovery

Location

On the medial side of the great toe, 0.1 finger-cun proximal and medial to the medial corner of the nail — where lines along the medial border and the base of the nail intersect.

How to locate: At the medial corner of the great toenail, find where a line along the medial border of the nail crosses a line along its base; the point is at that crossing, about 0.1 cun from the nail corner.

Distances are in cun, a proportional unit — how to measure.

Body map, front: SP1 · Foot
Fig. — SP1 · Foot After Albinus, 1747
Body map, front: SP1 · Foot

SP1 · Foot · Albinus, Tabulae sceleti et musculorum, 1747

Bones of the foot, dorsal — Gray's Anatomy plate
Bones of the foot, dorsal Gray's Anatomy, 1918 Marker hidden while its position on this plate is re-checked.
Bones of the foot, dorsal — Gray's Anatomy plate

Bones of the foot, dorsal · Gray's Anatomy, 1918

3D view

3D view not available for this point: its position can't be carried onto the 3D model reliably (it failed a placement check). The 2D maps above show it.

Needling

Cited needling

Techniques — the source gives these as alternatives:

  1. Perpendicular insertion
    Depth 0.1–0.2 cun
    skindeeper
  2. Oblique insertion — directed proximally
    Depth 0.1–0.2 cun
    skindeeper
  3. Prick to bleed

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)
  1. Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Hove: Journal of Chinese Medicine Publications; 1998 — p. 182 Supports: techniques (names this point)

Site notes · not cited

Depth: 0.1 cun
Angle: Shallow perpendicular
Moxibustion: Direct moxibustion at SP1 is the classical treatment for uterine bleeding from Spleen qi failing to hold the blood — often more effective here than needling.

Functions

  • Strengthens the Spleen and controls the blood
  • Stops bleeding, especially uterine
  • Unbinds the chest
  • Calms the spirit and restores consciousness

Indications

Uterine bleeding and excessive menstrual flowblood in the stool or urinenosebleedexcessive dreaming and insomniachildhood convulsionsabdominal distensionloss of consciousness

Balance Method partners

Under Dr. Tan's six systems, SP1 at the foot balances these channels at the regions its segment images.

Classical calendar method · 子午流注

When the tables open SP1

The hours Zi Wu Liu Zhu names this point at, by method. Times are the double-hour's start in UTC.

  • 己巳 09:00–11:00 Na Jia Fa, 己-day sequence · Jing-Well (井)

    「己日巳時隱白始」

    Next: Thu 22 Oct, 09:00

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

The single most reliable point for menorrhagia and metrorrhagia of deficiency type; moxa rather than needle is the method of choice.

Similar Points

Taibai how are these connected? (Taibai) Yinshi how are these connected? (Yinshi)

Sources

  • World Health Organization. WHO Standard Acupuncture Point Locations in the Western Pacific Region. Manila: WHO Regional Office for the Western Pacific, 2008. (Location.)
  • Focks C, ed. Atlas of Acupuncture. Edinburgh: Churchill Livingstone Elsevier, 2008. (Locating method and actions.)

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