Fu’s Subcutaneous Needling (Floating Acupuncture)

Fu’s Subcutaneous Needling (FSN), also referred to as Floating Acupuncture, is a modern acupuncture technique invented in China in 1996 by Dr. Zhong-hua Fu.

The needles are inserted only into the superficial connective tissue layer beneath the skin, manipulated gently by a swaying action combined with active muscle movement to boost blood flow and release tension fast. It avoids deep muscles, nerves, and organs, making the treatment virtually painless and exceptionally low-risk.

How is FSN different from traditional acupuncture?

FSN grew out of acupuncture, but it works in its own way. Where traditional acupuncture places fine needles at chosen points — often into muscle — the FSN needle stays in the loose connective tissue just beneath the skin, a layer with very few nerve endings. That is why treatment is close to painless, and why it is nicknamed “floating” acupuncture: the needle floats above the muscles rather than entering them. FSN is thought to work through gentle mechanical stimulation of this connective tissue, relaxing the tightened muscles nearby and encouraging their blood supply.

• The needle never enters the painful spot. It is inserted a short distance away, pointing towards the problem area, and works on the tight tissues around it.
• Only one or two needles are usually needed in a session, rather than the larger number used in a typical acupuncture treatment.
• You take an active part. While the needle is gently swayed, you perform simple guided muscle movements — the “reperfusion approach” — to draw fresh blood flow into the tightened muscle.
• Results are checked on the spot. Pain and movement are re-tested during the session, so you and your practitioner know straight away whether it is helping.

What happens in a session?

Your practitioner first examines the painful area by gentle palpation to find the tightened muscles behind the problem. The FSN needle itself is a clever piece of design, closer to a very fine catheter than to an ordinary needle: a stainless-steel core gives it just enough firmness to slip beneath the skin, inside a soft, flexible sleeve. Every needle is sterile and used once only.

After the skin is disinfected, the needle is introduced at a very shallow angle, glided forward parallel to the skin, and then swept smoothly from side to side for a couple of minutes while you make gentle guided movements. You may feel a brief prick as it goes in, but the treatment itself should not hurt — many patients feel the tension easing while it is happening.

For longer-lasting effect, the steel core can be withdrawn and the soft sleeve left in place under a small dressing for a few hours. It is completely flexible, so you can move about and go home as normal while it carries on working.

What can FSN help with?

FSN is primarily used to treat acute and chronic musculoskeletal pain caused by tight muscle groups and soft-tissue restriction — including period pain, neck and back pain, frozen shoulder, tennis elbow, sciatica, and joint stiffness — often offering immediate mobility improvements and pain relief within a single session.

Conditions in which FSN is commonly used include:

• Period pain (dysmenorrhoea) and chronic pelvic pain
• Neck, shoulder and back pain, including long-standing back pain
• Frozen shoulder and tennis elbow
• Sciatica and leg pain
• Knee osteoarthritis and joint stiffness
• Fibromyalgia and widespread muscle tightness
• Heel pain (plantar fasciitis)

FSN also sits comfortably alongside our other therapies: many patients combine it with acupuncture or Chinese herbal medicine as part of a wider treatment plan.

Is it safe? Does it hurt?

FSN has an excellent safety record. Because the needle stays in the layer just beneath the skin, the deeper structures — muscles, nerves, blood vessels and organs — are never touched. We use only sterile, single-use FSN needles. Side effects are uncommon and minor: occasionally a little bruising at the insertion point, or brief light-headedness in people who are nervous of needles.

FSN is not the right tool for every kind of pain — for example widespread diffuse pain such as most headaches, pain accompanied by numbness, or areas that are swollen, hot or infected. At your consultation Dr Zhang will assess whether FSN, acupuncture or a combination is the best approach for you, and will always be honest about what treatment can and cannot do.

How many sessions will I need?

One of the most appealing features of FSN is that it shows very quickly whether it is going to help: when it works, there is usually a clear improvement in pain or movement within the first session. A recent, acute problem may settle after only one or two treatments; long-standing conditions usually need a short course of sessions spaced a few days apart. Problems of weight-bearing joints, such as the knee, respond best when treatment is combined with proper rest.