LI-3 - Third Interval
三间 - Sān jiān
Point Region: Hand
LI-3, or 'Sanjian' (meaning 'Third Space'), is the 'Shu-Stream' and 'Wood' point of the Large Intestine channel. Located in the third space along the index finger, this point acts as a central hub where the energy of the meridian begins to gather and circulate more powerfully.
As a 'Shu-Stream' point, Sanjian is often used for joint pain and swelling along the channel, and is particularly good for the fingers, hands, and wrist. The 'stream' of energy at this point becomes more substantial, like a small creek that begins to flow with more purpose. This makes it an excellent point for a wide range of conditions, as it can both tonify (build up) and disperse (break down) energy as needed.
Its 'Wood' element connection links it to growth, movement, and flexibility. This is reflected in its ability to address issues of stiffness and limited range of motion, helping to restore a sense of ease and fluidity to the body's movements.
Location & How to Find
Anatomical Location: Located on the dorsum of the hand, in the groove between the thumb and index finger.
How to Locate:
- Turn your hand palm down
- Find the groove between your thumb and index finger bones
- Follow this groove from your knuckles toward your wrist
- The point is in this depression between the finger bones
Primary Functions
Digestive System
- Treats intestinal disorders and inflammation
- Relieves abdominal distension
- Regulates bowel movements
- Reduces digestive stagnation
Oral & Dental Health
- Alleviates severe toothache
- Treats facial swelling from dental issues
- Reduces oral inflammation
Eye & Vision System
- Relieves eye pain and strain
- Treats conjunctivitis and eye inflammation
- Improves visual clarity
Nervous System
- Reduces hand and finger pain
- Treats neurological disorders in hands
Respiratory System
- Clears heat from lungs
- Alleviates respiratory inflammation
Clinical Applications
Primary Indications
- Toothache
- Sore throat
- Hand stiffness
- Dental pain
- Throat pain
- Hand pain
- Finger problems
Related Health Concerns
Common Conditions:
Related Acupoints
Select a point to learn about its location, primary functions, clinical applications, and protocols.
LI-3 Protocols
N/A
Important Precautions
- Recent hand surgery
- Severe hand fracture
- Acute hand injury