Ponto Shu-Riacho (Madeira)Ponto Shu-Riacho (Madeira)Ponto local dos dedosSafeMembro Superior
Depth
00.5–2 cun3.0
Perpendicular insertion
Precautions
None standard
📍 Location (classical)
On the radial aspect of the index finger, proximal to the metacarpophalangeal joint, at the junction between the shaft and head of the second metacarpal bone.
🧭 How to find it (practical)
With the fingers gently flexed, locate the point at the metacarpophalangeal joint of the index finger, at the transition between light and dark skin, posterior to the head of the second metacarpal.
🔬 Anatomy
First dorsal interosseous muscle. Innervated by the proper palmar digital nerve and the superficial branch of the radial nerve.
💉 Needling
Perpendicular insertion, 0.5–2.0 cun (may be directed toward PC-8).
📜 Etymology
San (三), three, third; Jian (間), free space. This is the third point of the Large Intestine Meridian.
