Luo point; one of eight confluent points, connecting with thoroughfare vessel (TV).

bubble_chart Etymology

Named after the branching of collateral vessel. Huangdi Neijing Taisu Yang Shang-shan note: "Liver wood is 'grandfather' (公), heart fire is 'child' (子), and spleen earth is 'grandson' (孫). This acupoint is located on the vessel of 'grandson', hence it is named Gongsun (公孫)."

bubble_chart Location

Gongsun (SP4) acupoint
(adapted from "Meridians and Acupoints")

On the medial side of foot, in the depression anterior and inferior to the base of first metatarsal bone, 1 cun posterior to Taibai (SP3 ), within abductor hallucis muscle.

• Lingshu‧Jingmai: "1 cun posterior to metatarsophalangeal joint";
• Yixue Rumen; "1 cun posterior to Taibai (SP3), in the depression";
• Xunjing Kaoxue Bian: "At the junction of red and white flesh".

bubble_chart Anatomy

• Muscle: abductor pollicis
• Nerve: anastomosis between the branches of saphenous nerve and superficial peroneal nerve.
• Vessel: medial tarsal artery, dorsalis pedis venous network.

bubble_chart Manipulation

Perpendicular insertion 0.5~1 cun.

bubble_chart Efficacy

Invigorate spleen and stomach, regulate qi movement, harmonize blood sea, balance thoroughfare vessel (TV).

• Classical: chronic malaria without appetite, frequent chills and fever with sweating, frequent vomiting, phlegm congestion in chest and diaphragm, sharp pain with intestinal borborygmus, swelling of the head and face due to reversal, vexation, mania, excessive drinking, dislike lying down, tympanites, cholera, heart pain, cold spleen and epigastralgia, hypochondriac distention, hypochondriac pain, indigestion, intestinal wind with bloody defecation, heat or pain in the sole of feet, epilepsy.
• Modern: dizziness, chest pain, palpitation, lower abdominal spasm, peptic ulcer, acute and chronic enteritis, dysmenorrheal, retained placenta, numbness and pain in toes.

bubble_chart Combinations

• Vomiting of phlegm and drool, persistent dizziness: Gongsun (SP4), Fenglong (ST40), Zhongkui (EX-UE4), Tanzhong (CV17).
• Food stagnation in epigastrium, continuous stabbing pain: Gongsun (SP4), Jiexi (ST41), Zhongwan (CV12) ), Sanli.
• Pain in hypochondriac region: Gongsun (SP4), Zhigou (TE6), Zhangmen (LR13), Yanglingquan (GB34 ).
• Chronic malaria without appetite: Gongsun (SP4), Neiting (ST44), Lidui (ST45).
• Numbness and pain in toes: Gongsun (SP4), Shugu (BL65), Bafeng (EX-LE10).