The sinew-gatherer of the spine. Jinsuo (GV-8) relaxes tension in the tendons and sinews, calms the Liver, and eases spasms — a quiet but powerful point sitting right at the centre of the back, where tightness so often lodges.
Contraindications
As with all points on the spine in the thoracic region, take care not to needle too deeply, as the spinal canal lies beneath. Adhere to the recommended depth and oblique direction.
Name & story
The name 筋缩 Jinsuo means "Sinew Contraction" or "Tendon Tightening". It is a beautifully literal name: 筋 (jin) means sinews and tendons, and 缩 (suo) means to contract, shrink or draw together. The name tells you exactly what the point treats — and what it undoes. When the sinews of the body seize up, cramp or go into spasm, this point on the Governing Vessel reaches out to them and invites them to release. It sits along the spine, the great "sea of Yang" channel, and governs the sinews that run along it.
Point family & character
Jinsuo (GV-8) belongs to the Governing Vessel (GV), the great midline channel that runs up the spine and over the crown of the head. It sits below the spinous process of the 9th thoracic vertebra (T9), placing it at the level of the back-Shu point of the Liver — Ganshu BL-18 — which lies just 1.5 Cun to either side. This anatomical relationship is no coincidence: the Liver governs the sinews throughout the body, and GV-8 directly reflects that influence from the midline.
Five-element dynamics
In Chinese medicine, the Liver is the organ that governs all sinews and tendons — it is said that the Liver "rules" the body's ability to flex, extend and move smoothly. When Liver Blood is plentiful and Liver Qi flows freely, the sinews are supple and relaxed. When the Liver is strained — by stress, Heat, Wind, or Blood Deficiency — the sinews tighten, cramp and go into spasm. Jinsuo (GV-8), sitting precisely at the level of the Liver's back-Shu point, is the Governing Vessel's own answer to this: it calms the Liver, clears Wind and relieves the sinew contraction that comes when the Liver loses its balance.
Location
On the midline of the back, in the depression directly below the spinous process of the 9th thoracic vertebra (T9). A helpful landmark: it sits one vertebra above Zhiyang GV-9 (which is below T7) — count up the spine from GV-9 to locate it, or find the lower tip of the shoulder blades (which approximates T7) and count down two levels.
Anatomy & fascia
The point lies on the midline of the back, over the interspinous ligament between the 9th and 10th thoracic vertebrae.
Needling
The needle is inserted obliquely upward along the spine.
Safe depth
0.5–1 Cun.
Moxa, cupping & Tui Na
Moxa is appropriate at this point when Cold or weakness underlies the sinew tension. Cupping along the spine in the area of GV-8 and BL-18 can also help release tightness in the back sinews. Gentle Tui Na massage along the erector muscles beside the spine complements needling well.
Functions
Relaxes sinews and relieves spasm. Calms the Liver and extinguishes internal Wind. Clears Heat from the Liver. Settles the Shen and eases epileptic-type convulsions. Benefits the spine and eases pain along the Governing Vessel.
Indications
Spasm and contraction of the back muscles and sinews; stiffness and pain along the spine, particularly in the mid-thoracic region. Epilepsy and convulsions. Spasm of the limbs. Liver disorders with tightness and tension. Hysteria. Jaundice (in combination with neighbouring points on the Governing Vessel). Stomach pain.
Mind & spirit (Shen)
The Liver in Chinese medicine does not only govern the body's sinews — it also holds the Hun, the spiritual aspect associated with vision, direction and the capacity to plan one's life. When the Liver is under pressure — from long-held frustration, suppressed anger or relentless stress — both the sinews and the spirit tighten together. The person feels rigid, unable to bend, stuck. Jinsuo (GV-8), by releasing the physical contraction and calming the Liver's restless Yang, can bring a corresponding softening to the mind: a loosening of rigidity, a return of inner flexibility.
Point combinations
With Ganshu BL-18 — the natural pairing, as they sit at the same vertebral level; together they calm the Liver, nourish Liver Blood and release sinew tension. With GV-14 (Dazhui) and GV-26 (Shuigou) — for epilepsy and convulsions, drawing on the full length of the Governing Vessel to calm Wind and restore consciousness. With GV-9 (Zhiyang) — for mid-back pain and disorders in the thoracic region along the Governing Vessel.
Clinical spotlight
What makes Jinsuo (GV-8) stand out is its precise anatomical coincidence with the Liver's back-Shu point: BL-18 (Ganshu) lies just 1.5 Cun to either side of it, at exactly the same vertebral level. This means that needling GV-8 brings the influence of the Governing Vessel — the Sea of Yang — directly to bear on the Liver's back reflex zone. For practitioners treating spasm, epilepsy or deep sinew tension rooted in Liver imbalance, this midline point offers a unique angle of approach: it works along the spine's own central axis while simultaneously engaging the Liver's governing relationship with the sinews throughout the entire body.
The golden tip
A useful home-care approach for mid-back tightness at this level is gentle self-massage along the spine in the mid-thoracic area, or the careful use of a rolled towel placed under the back while lying down to open the thoracic vertebrae. Warmth applied to the area — a warm pack or heat pad — can help release tension in the sinews when Cold is a contributing factor. Stretching exercises that gently open and flex the thoracic spine are also supportive.
For education only — not medical advice. Consult a qualified practitioner.