Wrist Bone (SI-4) Pressure Point: Benefits & Technique

The Wrist Bone pressure point (SI-4) is used most often for headache and stiff neck, and it’s located on the ulnar (pinky) side of the wrist/hand, in a small depression at the base of the 5th metacarpal.

In Traditional Chinese Medicine (TCM), SI-4 is called Wàngǔ (SI-4) and is the Yuan-Source point of the Small Intestine (SI) meridian, meaning it’s traditionally used to help regulate the channel’s overall function and clear obstruction along its pathway (hand → arm → shoulder → neck/face).

Introduction & Definition (What is the Wrist Bone pressure point?)

SI-4 (Wàngǔ)—often translated as “Wrist Bone”—is a Small Intestine meridian point on the ulnar side of the hand near the wrist crease. In classical acupuncture literature, it’s described at the junction of “red and white skin” (a traditional way of describing the transition between palmar and dorsal skin).

Clinically, the Wrist Bone pressure point is most associated with:

• Neck stiffness and upper-body tension patterns along the Small Intestine channel
• Hand and finger pain (local and regional effects)
• Headache (especially when paired with other points)
• Damp-Heat presentations in TCM where jaundice is a key sign (historical indication)

Summary Table

Attribute	Details
Pressure Point Name	SI-4 – Wrist Bone
Body Area	Wrist
Exact Location	Ulnar (pinky) side of the hand, in the depression between the base of the 5th metacarpal and the wrist bones, near the wrist crease
Common Uses	Headache, stiff neck, finger pain/stiffness, jaundice (TCM Damp-Heat patterns)
Stimulation Technique	Firm thumb or finger pressure, 1–3 minutes
Contraindications	Avoid pressing directly on irritated/injured tissue; use extra caution with ulnar-nerve sensitivity; consult clinician in pregnancy if unsure

Clinical Significance & Associated Conditions

In TCM terms, SI-4 is used to move qi and blood in the Small Intestine channel and to help clear Damp-Heat when appropriate. Because the SI channel travels through the wrist, arm, shoulder, scapular region, neck, and face, SI-4 is commonly chosen when symptoms track that route.

Common clinical presentations where SI-4 may be considered:

• Stiff neck with reduced range of motion (especially with shoulder/upper back tightness)
• Headache with upper-body tension (often combined with broader analgesic points)
• Finger pain, cramping, or stiffness, including overuse patterns
• Wrist discomfort or weakness (local effect)
• Jaundice as a traditional indication, particularly in TCM patterns involving Damp-Heat affecting Liver/Gallbladder function

From a modern anatomy lens, SI-4 sits near branches of the ulnar nerve and the dorsal carpal arterial network. That proximity helps explain why precise pressure and dosage matter—too much force can feel sharp or “electric,” which is a sign to reduce intensity.

Location (How to find SI-4 precisely)

To find SI-4 on yourself:

1. Turn your palm slightly upward and look at the pinky-side (ulnar side) of your hand near the wrist.
2. Feel for the long bone that leads to the pinky finger (the 5th metacarpal).
3. Slide your finger toward the wrist along that bone until you reach the base—you’ll notice a small dip/depression where the metacarpal meets the wrist bones.
4. SI-4 is typically at or very near the wrist crease, in that depression.

Landmark tips (easy palpation cues):

• It’s on the pinky side, not the thumb side.
• It’s not in the center of the wrist—more ulnar and slightly “into” the hollow at the base of the hand.
• If you press and feel a strong, sharp zing into the pinky/ulnar hand, you’re likely too close to a nerve branch—back off and adjust slightly.

How to Stimulate It (Acupressure technique)

Best method: firm, steady thumb or fingertip pressure.

1. Place your thumb pad on SI-4 (Wangu).
2. Apply firm but comfortable pressure—aim for a “good ache,” not sharp pain.
3. Hold 60–180 seconds, breathing slowly.
4. Release gradually, then repeat 1–2 rounds.

Pressure level and sensation guidance:

• Mild–moderate pressure is usually enough for neck tension or headache support.
• If you feel numbness, tingling, or an electric sensation, reduce pressure and shift a few millimeters—this can indicate nerve irritation.

Positioning:

• For self-acupressure, rest your forearm on a table to keep the wrist relaxed.
• For neck stiffness, combine pressure with gentle neck range-of-motion: slow rotations or side-bends while holding the point.

Frequency:

• For acute tension: 1–3 times daily for a few days.
• For maintenance: 3–5 sessions per week.

Benefits and Common Uses

1) Headache support (tension-pattern headaches)

The Wrist Bone pressure point may help reduce headache intensity when headaches are linked with upper-body tension and neck/shoulder tightness. In practice, SI-4 is often used as a channel-based choice (Small Intestine pathway) rather than a standalone “headache point.”

Helpful pairing options are listed in Related Points & Techniques below.

2) Stiff neck and restricted mobility

SI-4 is traditionally used to unblock channel stagnation affecting the neck and upper back. Many people notice the best effect when they:

• Hold SI-4 for 1–2 minutes
• Then do 3–5 slow neck movements (pain-free range)

3) Finger pain, stiffness, and overuse discomfort

Because SI-4 is anatomically close to the hand’s ulnar-side structures and is classically indicated for wrist and finger issues, it’s commonly used for:

• Pinky-side hand tightness
• Finger joint stiffness (especially when symptoms feel “along the side” of the hand/arm)
• Post-activity soreness from gripping tasks

4) Jaundice (traditional indication)

In TCM, SI-4 is described as helping clear Damp-Heat, and classical sources include jaundice—particularly “Yang-type” jaundice—as an indication. This does not replace medical evaluation. If jaundice is present (yellowing of eyes/skin), it’s a medical priority.

Physiological Functions & Mechanisms (TCM + modern view)

TCM framework

• As the Yuan-Source point of the Small Intestine meridian, SI-4 is used to influence the channel’s overall qi dynamics.
• It’s classically used to dispel obstruction (often discussed under Painful Obstruction / Bi patterns) and to clear Heat/Damp-Heat when clinically appropriate.

Modern anatomy perspective (plausible mechanisms)

• Neuromodulation: manual pressure near the ulnar-side nerve branches may influence local sensory input and pain gating.
• Local circulation and soft tissue effects: sustained pressure can increase local tissue warming and may reduce protective muscle guarding around the wrist/hand.
• Regional myofascial relationships: wrist/forearm tension can contribute to upstream tightness; addressing distal points sometimes changes perceived tension through the kinetic chain.

Mechanism research is not point-specific here; most modern evidence evaluates acupuncture/acupressure as broader interventions rather than isolating SI-4 alone.

Practitioner Insight (brief, first-person)

When I use SI-4 (Wangu) for stiff neck patterns, I get the most consistent results by keeping pressure steady and moderate (not intense), and pairing it with slow nasal breathing plus gentle neck movement. If the point feels “sharp,” I treat that as a sign to reposition slightly rather than pushing through.

Safety & Contraindications

General precautions:

• Avoid acupressure on open wounds, inflamed skin, fresh bruising, or fractures near the point.
• Use extra caution if you have ulnar nerve sensitivity, nerve entrapment symptoms, or unexplained numbness/tingling in the hand.
• If you’re managing a diagnosed condition (e.g., neuropathy, inflammatory arthritis), consider clinician guidance before intensive self-treatment.

Important medical caution:

• Jaundice requires medical evaluation. Acupressure may be supportive but should never delay appropriate care.

Recommended reading:

• See our acupressure safety guide for contraindications and best practices.
• Browse more techniques in our acupressure category.

As always, listen to your body and stop if discomfort arises.

Related Points & Techniques

Complementary points (common combinations in practice):

• Pair with LI-4 (Hegu) for broad pain modulation and headache support (avoid in pregnancy unless medically advised).
• Add LI-5 (Yangxi) for wrist mobility and local wrist-line tension patterns.
• For neck tension with headache patterns, consider scalp support such as ST-8 (Touwei).
• For forearm/upper-arm tension patterns that contribute to neck/shoulder tightness, see LI-14 (Binao).
• For wrist-line balancing work and Heart channel relationships, explore HT-4 (Lingdao).

Adjunct techniques (non-point-specific):

• Slow exhale breathing (1:2 ratio): inhale 3–4 seconds, exhale 6–8 seconds while holding SI-4.
• Gentle wrist mobility: 5 slow circles each direction after pressing.
• Light tapping: tap along the ulnar side of the forearm for 20–30 seconds, then return to SI-4.

Scientific Perspective

Direct, high-quality clinical trials on SI-4 specifically are limited in the public literature; most studies evaluate acupuncture/acupressure by condition (e.g., headache, neck pain) or by protocol rather than isolating a single point.

To stay evidence-informed, I anchor recommendations in:

• Safety and general effectiveness findings from the NIH National Center for Complementary and Integrative Health (NCCIH) overview on acupuncture, which summarizes current evidence and limitations across pain conditions.
• Broader clinical research indexed in PubMed on acupuncture/acupressure for pain modulation, including tension-type headache and musculoskeletal pain, while recognizing that point-specific conclusions are often not possible.

In practical terms: SI-4 is best viewed as a low-risk, anatomy-informed acupressure option that may help when symptoms match the Small Intestine channel distribution (wrist/ulnar hand → arm → neck/face), and when used alongside standard care.