Fengshi (GB31): The Outer Thigh Point for Hip-to-Knee Ache

Where Fengshi Sits

This point sits on the outer thigh, in the groove behind the tough band down the side of the leg, where the middle fingertip rests with the arms hanging, and it is used for ache down the side of the thigh. It belongs to the Gallbladder channel, one of the longest lines on the traditional map. It starts at the outer corner of the eye, runs over the side of the head and down the side of the trunk, crosses the side of the buttock, and then travels down the outer side of the leg to the fourth toe. This is the thirty-first stop along it, the first one on the thigh after the line leaves the hip.

It sits on the outer side of the thigh, between the hip and the knee. The old texts place it seven proportional units above the crease at the back of the knee. On most people that is a little below the middle of the thigh. There is also a far easier way, used by teachers for centuries. Stand up straight and let your arms hang loosely by your sides. Where the tip of your middle finger touches the outer thigh is the area. Arm length varies, so take that as the starting place for your search.

Running down the side of the thigh is a long, tough band of connective tissue, from the top of the pelvis to below the knee. You can feel it as a firm strap if you press the outer thigh while lifting the leg out to the side. The point sits in the groove right behind that band, toward the back of the thigh. Under the band and the groove lies the large outer muscle of the front thigh, one of the main muscles that straighten the knee.

The skin of the outer thigh is served by a nerve called the outer skin nerve of the thigh, which comes from nerve roots in the upper part of the lower back. Pressure here can sometimes bring a flat, tingling feeling to the skin over a wide patch. That is the nerve talking. Ease off and shift slightly if it happens.

Why This Spot

The side of the thigh carries more strain than most people realise. Every step on one leg pulls on that tough band. Walking with a stiff knee, limping to spare a sore hip, or standing for long hours all load it further. In later life the band often becomes tight and the groove behind it tender, so a pressing tool finds a sharp spot quickly. The target is also easy to reach. You can sit in a chair and work the outer thigh with either hand, without bending far or twisting the back.

There is a second, practical reason. The outer thigh is broad, and it is easy to wander. The fingertip landmark and the clear edge of the band give you a starting point, so you are searching a small area, not the whole side of the leg.

In this tradition the name tells you what the point is for. It means the wind market, the place where wind gathers. In the old medical language, wind describes complaints that move about, come and go, or arrive suddenly: aches that shift from joint to joint, numbness that wanders, and itching that appears in one place and then another. This point was the place teachers turned to for wind affecting the lower body and the skin. That is why the same spot on the thigh is used both for a stiff, heavy leg and for itchy skin.

What the Old Texts Say About Fengshi

In the teaching tradition this point has kept two jobs side by side for a very long time. The first is the leg: ache running down the outer thigh, legs that feel weak and heavy, a hip and thigh that stiffen in cold, damp weather. The second is the skin, especially itching that moves around the body. The finding method has also stayed the same. The classical description asks the person to stand with hands hanging straight down, and takes the point where the middle finger ends.

The Vietnamese handbook used in this method, Ngô Trung Triều's Points and Channels of the Human Body (Huyệt vị kinh lạc cơ thể người), records the same pair of uses. It lists weakness of the legs, pain in the low back and thigh, itching all over the body and itchy allergic rashes. It places the point on the outer side of the thigh, seven units above the knee, and gives the standing method as the quick way to find it.

The World Health Organization's location guide of 2008 places the point on the outer thigh, in the hollow behind the tough band, where the tip of the middle finger rests with the arms hanging alongside the thigh. It adds a tip for finding the band itself. Bend the knee slightly and push the leg outward against resistance, and the band stands out under the skin. Those agreements across schools do not prove anything about how the point works. They do show that, for many centuries, people with stiff legs and itchy skin kept coming back to this same spot.

Points That Work With Fengshi

The first partner lies higher on the same line, deep in the side of the buttock. Find the bony knob at the side of the hip and move about a hand's width toward the base of the spine. It is commonly used for an ache that starts in the buttock and runs down the side of the leg. The hand cannot reach it well, so it is pressed with a tennis ball against a wall.

The second sits below the outer knee. Feel for the small, round head of the thinner lower-leg bone on the outer side, a little below the knee. Slide your fingertip forward and down into the hollow in front of it. In this tradition it is a key point for muscles and tendons, and it pairs with this one for stiff, aching legs.

The third is at the elbow. Bend the elbow and find the outer end of the crease, on the thumb side. In this tradition it is one of the most used points for itchy skin, and it is often paired with this one when itching is the main complaint.

How to Find and Press Fengshi

Getting Into Position

Find the area standing up, then sit to press it. Sit on a firm chair with your feet flat and the knee bent at about a right angle. Let the thigh rest on the seat and turn the knee slightly inward so the outer thigh faces up a little. If you prefer, lie on your side with the leg you are working on uppermost and a pillow between the knees.

How to Find It

Stand straight with your arms hanging loosely by your sides, shoulders relaxed. Note where the tip of your middle finger touches the outer thigh, and keep a finger on that place as you sit down. Now press there and feel for the tough band down the side of the thigh. It feels like a firm, flat strap. Slide your fingertip a little behind it, toward the back of the thigh, into the softer groove. That groove is your area.

Search inside it. Use a rounded-tip pressing tool, or the tip of your thumb with the nail cut short. Probe up and down the groove in small steps, a few millimetres at a time. Much of the outer thigh will feel tender in a dull, broad way. One spot will sting: a sharp, pinpoint tenderness that catches you. That is the point. It may sit a little higher or lower than your fingertip mark. If a flat tingling spreads over the skin of the thigh, ease off and move slightly.

How to Press It

Stay on the spot that stings and rub it in small circles, no wider than a grain of rice. Keep the skin moving with the tool rather than sliding over it. Aim straight in toward the thigh bone, with the tool tucked against the back edge of the band.

The thigh is large, and the thumb tires quickly here. A rounded-tip tool saves the thumb. If you use your thumb, use the very tip, not the flat pad, and support that hand with the other one. Never use anything sharp or pointed. If your hands are weak, a tennis ball under the outer thigh, with you lying on your side, can do the same job with gentle weight.

How Much Pressure

On this point, sharp under the tool is right, but the outer thigh is often more tender than people expect, so begin lightly. The sting should fade within a few seconds of lifting off. If you are holding your breath or tensing the other leg, ease off. Stop if the pain stays after you lift off, if it spreads down the leg, or if the area turns swollen, hot or red. Stop too for any electric or numb sensation. The skin here bruises easily in later life, so a mark the next day means lighter pressure next time.

How Long

One to three minutes per point, on each leg. In the first few sessions stay near one minute a side. As the days go on and the spot becomes less touchy, build up toward two or three minutes. Work both legs, even if only one complains. One or two sessions a day is plenty.

When to Do It

A morning session suits a leg that feels stiff and heavy on getting up. An afternoon session suits an ache that builds after walking or standing. If itching is the main complaint, a short session in the evening, before bed, is a common choice. Do not press in the middle of the night. If an itch or an ache wakes you, keep the skin cool, change position and leave the point until the morning. Working a sharp spot while half-awake is easy to overdo, and it tends to leave you more alert, not less.

What This Won't Do

It will not change the cause of the ache. Pain down the side of the thigh often comes from the hip joint, from the lower back, from a knee that has worn, or from years of walking unevenly to spare one of them. A tender spot on the outer thigh can feel easier for a while after pressing, but the strain that made it tender will return unless the reason changes. Walking regularly, standing up often and the exercises a physiotherapist gives you matter more. For itching, the same is true. Dry skin, a new soap, a medicine or a skin condition may be behind it, and pressing the thigh will not change that.

It will not replace a diagnosis. Leg pain that runs below the knee, numbness, tingling or weakness in the leg or foot needs a doctor before you press anything. So does a burning, numb patch on the outer thigh that does not go away. A calf or thigh that is swollen, hot and painful needs urgent attention, because it can signal a blood clot. Itching with a rash that spreads, blisters or weeps, or with swelling of the face, lips or tongue, needs medical help, and swelling of the lips or tongue with difficulty breathing is an emergency. Itching all over with no rash, or with yellowing skin or weight loss, should be checked by a doctor.

Safety First

Do not work over skin that is broken, burned, infected, badly bruised or rashy, and do not press on an itchy rash itself. Leave the area alone after a recent fracture or surgery on the thigh or hip, or over a plate or pin. If you have varicose veins or have ever had a blood clot in the leg, ask a doctor first, and never press on a bulging vein. If you take blood thinners, bruise easily, have a bleeding disorder, advanced diabetes or reduced feeling in your legs, use lighter pressure and shorter sessions, and talk to your doctor first.

Stop at once if the leg goes numb, if the pain stays after you lift off, or if the area turns swollen, hot or red. For the full list of cautions and the situations where self-applied pressure is not appropriate, read the full safety guide before you begin.

Questions People Ask

Where is the Fengshi (GB31) pressure point? Fengshi (GB31) is on the outer thigh. Stand straight with your arms hanging loosely by your sides. Where the tip of your middle finger touches the thigh, move a little behind the tough band that runs down the side of the leg. Probe that groove until one spot stings; that is the point.

My arms are long or short. Does the fingertip method still work? It is a good starting point, not an exact measure. The old texts also place the point seven units above the knee crease, which on most people is a little below the middle of the thigh. Use the fingertip to find the area, then let the stinging spot tell you the exact place.

How long should I press Fengshi? One to three minutes on each leg. Keep it near one minute in the first sessions, because the side of the thigh is often very tender. Build up a little as the days go on. One or two sessions a day is enough.

Can Fengshi (GB31) help with itchy skin? In this tradition the point's name refers to wind, and it is commonly used for itching that moves around the body. It will not remove the cause of an itch. A rash that spreads, blisters, or comes with swelling of the face or lips needs a doctor.

What is Fengshi (GB31) used for, and what does the name mean? In Vietnamese traditional medicine it is commonly used for ache down the side of the thigh, a stiff, heavy leg and itchy skin. The name means "the Wind Market", the place where wind gathers; in the old medical language wind means complaints that move about. In Vietnamese the point is called Phong Thị. The outer thigh is often tender, so a sharp spot under the tool is normal.

Can I use a tennis ball instead? Yes, if your hands are weak. Lie on your side on a firm surface with the ball under the outer thigh and lower your weight onto it slowly. Keep it light, because the side of the thigh is easy to bruise, and stop if the pain stays after you lift off.

Other Points in This Library

Each of these sits within reach of the same hand. They are often worked in the same sitting.

This page shares general information about a traditional practice. It is not medical advice and does not replace what your doctor has given you. If you are pregnant, managing a health condition, or unsure whether this applies to you, check with your doctor first.

The whole inner edge of the foot, laid out on one page with photographs, is in The Foot Map — the free book. For every point in this library, see the full pressure point index.

(Point shown: GB31 · Fengshi · The Wind Market · Phong Thị.)