On the medial aspect of the femur, 4 cun proximal to the medial condyle of the femur (or 4 cun above LR-8), between the sartorius and vastus medialis muscles.
🧭 How to find it (practical)
With the knee flexed, locate the point 4 cun immediately above Qu Quan (LR-8), or 5 cun above the popliteal fossa, between the vastus medialis and sartorius muscles.
🔬 Anatomy
Sartorius, vastus medialis, and adductor longus muscles. Innervated by the anterior cutaneous branches of the femoral nerve and by the obturator nerve.
💉 Needling
Perpendicular insertion, 1.0–1.5 cun.
📜 Etymology
Yin (阴), medial aspect; Bao (包), interior, wrapping. The point is located on the medial aspect of the thigh, between the Spleen Meridian (Foot Tai Yin) and the Kidney Meridian (Foot Shao Yin).
