SI6

On the dorsal aspect of the head of the ulna, in the cleft that opens level with the tip of the styloid process and on its radial side, when the hand turns from pronation to supination.

Elbow slightly flexed, hand pronated. Place a finger on the tip of the ulnar styloid process, then ask the person to turn the palm towards their chest: the finger slides on its own into a bony cleft, in front of the styloid. That is the place. The cleft can also be found with the hand resting flat on the chest, in half-supination. The WHO notice sets the place one body-cun proximal to the dorsal wrist crease.

• processus styloïde de l’ulna
• tête de l’ulna
• pli dorsal du poignet

Sources : deadman-manual · focks-atlas — reworded, never copied

On the posteromedial aspect of the forearm, in the depression radial to the head of the ulna, proximal to the dorsal wrist crease.

Bone landmarks: the head and styloid process of the ulna, the dorsal wrist crease; the WHO notice puts the distance at 1 B-cun, a proportional and not a metric unit. Focks additionally names the tendon of extensor carpi ulnaris, running along the groove — the only musculotendinous structure that source names for the five pilot places. No nerve or vessel is mentioned there in the location sources surveyed.

• tête de l’ulna
• processus styloïde de l’ulna
• pli dorsal du poignet
• tendon de l’extenseur ulnaire du carpe

Sources : oms-standard-2008 · focks-atlas — reworded, never copied

What the finger seeks

A bony cleft that does not exist at rest: it opens under the finger while the hand turns from pronation to supination, in front of the ulnar styloid process.

Put simply — Put a finger on the knob of the bone, turn the palm towards your chest: the finger drops into a cleft. It is the only one of the five that a movement brings into being.

Sources : deadman-manual · focks-atlas — reworded, never copied

What is unknown

Put simply — The mark is not a dot: it shows what is unknown. Two practitioners looking for this place will not put a finger in exactly the same spot.

Sources : sciotti-2001

Oblique or transverse-oblique, distally or proximally; Focks also describes a proximal direction towards PC6, or along the tendon towards the elbow. No depth is published: see the caution.

No depth is published: no critical structure is documented in the verified holdings for this place, and a depth figure is never published without the structure it is set against. Absence of data is not a statement of safety.

Channel functions

Opens the channel and eases pain, benefits the shoulder and the arm, moderates acute conditions; benefits the eyes.

Put simply — The point for acute trouble: the two works use almost the same words.

Sources : deadman-manual · focks-atlas — reworded, never copied

Main channel

Xi-cleft point of the channel. Both works make it the distal point for acute pain and lost range of motion — shoulder, scapula, neck, lumbar region — and the point for deficiency-type visual trouble: failing sight, blurred sight.

Put simply — When it is acute and the shoulder will no longer lift, this is the distal point to take.

Sources : deadman-manual · focks-atlas — reworded, never copied

Sinew channel

This place lies just upstream of where the Small Intestine sinew channel binds at the wrist. Extensor carpi ulnaris is the structure named at this level by both works: Maciocia places it among the muscles of that channel's territory — a claim of Chinese-medicine literature — and Focks describes its tendon running along the groove where the place sits — an anatomical description. The two statements bear on the same structure, each in its own regime; they do not confirm one another.

Put simply — The tendon running along the groove is also, for Maciocia, a muscle of the channel's sinew territory. Two ways of speaking about the same tendon, not a cross-check.

Sources : maciocia-channels · focks-atlas — reworded, never copied

Name, history and character

Yanglao, 'Support the Aged'. Deadman reports that most authorities read the name in the light of its use in deficiency-type visual disorders — failing sight — and not as a general geriatric indication.

Field open in the schema; no matter is recorded for this place.

Anatomical landmark

Focks situe 6IG (SI6/Yanglao) dans un sillon osseux juste proximal à l'apophyse styloïde de l'ulna, repérable en amenant la main de la pronation à la supination — repère osseux (styloïde ulnaire).

Extrait de contrôle (p. 228) : « the palpating finger will glide into a bony cleft at the proximal aspect of the styloid process » [of the ulna]. Vérifié dans l'original le 2026-08-15.

Anatomical landmark

Focks précise que le tendon du muscle extensor carpi ulnaris (extenseur ulnaire du carpe) longe le sillon où se situe 6IG (SI6/Yanglao) — seule structure myotendineuse nommée par cette source pour l'ensemble des 5 points pilotes ; aucune structure nerveuse ou vasculaire n'est mentionnée à cet endroit.

Extrait de contrôle (p. 228) : « the tendon of the extensor carpi ulnaris muscle runs along this groove ». Vérifié dans l'original le 2026-08-15 (dé-césure d'un retour à la ligne de l'OCR : « ulnari mus-cle » → « ulnaris muscle », aucune altération de contenu).

Named structures

• os-ulna-tete
• os-ulna-processus-styloide
• t-extenseur-ulnaire-du-carpe

Muscular relations

Sources : focks-atlas

Contemporary medicine

Safety: no critical structure is documented for this place in the verified holdings. Absence of data is not a statement of safety; no depth is published, for want of a critical structure to set against it. Innervation: absent from the location sources surveyed. Clinical concordance: not tested — no verification by Justin.

No risk referenced for this place in the verified holdings. The reservation below states what was searched for.

Author’s note

'Support the Aged'. The name says what is expected of it, and Deadman explains that it comes from its use in failing sight. In practice it is first of all a xi-cleft point: you go there when things are acute, when the shoulder 'will no longer lift' — and Focks specifies that the needling is done while the person gently moves the affected region. It is the only one of the five that requires a movement before it will be found.

Codes