BL-38 - Floating Cleft

浮郄 - Fú xì

Point Region: Knee

BL

Bladder Meridian

足太阳膀胱经 - Zú Tàiyáng Pángguāng Jīng

Location & How to Find

Anatomical Location: At the back of the knee, just inside the biceps femoris tendon (the tendon on the outer side of the back of the knee), 1 cun above the crease behind the knee. It lies 1 cun above BL-39.

Distances are in cun, a unit that scales with each person's body. As a guide, the width of your thumb at its joint is 1 cun, and your four fingers held together, measured across the middle joints, are 3 cun.

How to Locate:

  1. Bend your knee slightly and find the tendon on the outer side of the back of the knee
  2. Find BL-39 on the crease just inside that tendon
  3. The point is one thumb-width above BL-39
BL-38 (Floating Cleft) acupressure point location: At the back of the knee, just inside the biceps femoris tendon (the tendon on the outer side of the back of the knee), 1 cun above the crease behind the knee.

How to Apply Pressure

Using a fingertip, apply gentle, steady pressure just inside the tendon on the outer side of the back of your knee, one thumb-width above the crease behind the knee. Firm but never painful pressure is enough; stop if it hurts. Skip this point over irritated or broken skin.

Traditional Indications

In TCM, this point is traditionally used for:

  • Sciatica
  • Muscle cramps
  • Thigh tension
  • Lumbar pain
  • Leg spasms

Related Health Concerns

SciaticaCrampsLower Back Pain

Select a point to see its location, how to find it, and its traditional uses.