Steroid Injections for Plantar Fasciitis
Ultrasound-Guided Heel Pain Treatment

Plantar fasciitis is inflammation of the plantar fascia, the thick band of tissue that runs along the sole of your foot, connecting your heel bone to your toes and supporting the arch. When this band is overloaded it develops small tears and becomes inflamed and thickened, typically where it attaches to the heel bone, causing persistent heel pain.

It is most often caused by overuse, sudden increases in activity, prolonged standing, unsupportive footwear, tight calf muscles or changes in foot mechanics. A bony heel spur sometimes appears alongside it, though the spur itself is rarely the source of pain.

A steroid (cortisone) injection helps by delivering anti-inflammatory medication directly into the inflamed fascia, calming the inflammation that everyday stretching and rest have not resolved. At the Harley Street Ultrasound Group, this is delivered under ultrasound guidance, so the steroid is placed precisely into the fascia while protecting the heel fat pad.

The hallmark symptom is sharp heel pain that is worst with your first few steps in the morning, or after sitting for a while. The pain often eases a little as you warm up, then returns after long periods on your feet.

Common signs include:

• Stabbing or aching pain under the heel, sometimes spreading into the arch.
• Pain that is worst on the first steps after rest and after prolonged standing or walking.
• Tenderness when you press on the inner side of the heel.
• Stiffness and discomfort that flares after exercise rather than during it.

Because other conditions, such as a heel-pad bruise, nerve entrapment or a stress fracture can mimic these symptoms, an ultrasound assessment is used to confirm the diagnosis before any injection.

At the Harley Street Ultrasound Group, your appointment begins with a diagnostic ultrasound assessment, performed by your specialist consultant doctor. Ultrasound shows the plantar fascia in real time and is used to confirm the diagnosis, a healthy fascia is typically under 4mm thick, and in plantar fasciitis it is visibly thickened, so your consultant can measure the fascia directly and grade the severity.

Just as importantly, the scan is used to rule out other causes of heel pain such as a fascial tear, nerve entrapment, fat-pad atrophy or a stress fracture, which can feel similar but need different treatment.

Diagnosing the problem accurately first is what makes the treatment precise. Because the same ultrasound is then used to guide the injection, your consultant can place the needle exactly into the thickened fascia under real-time, while keeping the steroid away from the protective heel fat pad.

A steroid injection for plantar fasciitis works by delivering anti-inflammatory corticosteroid medication directly into the inflamed plantar fascia, usually combined with a small amount of local anaesthetic. This calms the inflammation at the source, relieving the heel pain that rest, stretching and orthotics alone have not settled.

Because the procedure is performed under real-time ultrasound, your consultant can ensure the injection reaches the exact location and confirm the medication is going precisely to where it is needed. This precision is what makes the treatment both effective and safe: the steroid is targeted into the fascia while the protective heel fat pad is deliberately avoided, and nearby nerves are identified and kept clear.

A steroid injection is most useful when heel pain is stubborn and limiting daily life. For some patients your consultant may discuss other options, this page covers the steroid injection specifically; you can also read our broader guide to plantar fasciitis injection treatments.

Most patients find the injection more comfortable than expected. Local anaesthetic is used, so you typically feel a small sting as it goes in, followed by brief pressure as the medication is delivered. This is normal and settles quickly. The sole of the foot is a sensitive area, which is exactly why ultrasound guidance matters: it lets your consultant work efficiently and accurately.

The appointment usually takes around 20–30 minutes from assessment to completion:

• Your consultant scans the heel to confirm the diagnosis and measure the fascia.
• The skin is cleaned and local anaesthetic is applied.
• The injection is delivered into the fascia under live ultrasound guidance.
• You rest briefly and are given aftercare guidance before you leave.

There is no general anaesthetic and no overnight stay. You can usually drive yourself home, though arranging a lift is sensible if your foot feels sore afterwards.

Your injection is performed by a consultant specialist doctor, not a physiotherapist, nurse or GP. This matters, as the majority of MSK injections in the UK are delivered by non-consultant practitioners, often without ultrasound image guidance.

At the Harley Street Ultrasound Group, you receive both the clinical judgement of a senior specialist and the precision of real-time ultrasound examination in a single appointment. Your consultant assesses the foot, confirms the source of pain, performs the procedure and explains your aftercare personally.

We will never give you an injection you do not need. If, after your ultrasound assessment, your consultant decides an injection is not the right treatment for you, the procedure simply won’t go ahead. You will be charged at our standard diagnostic ultrasound rate, not the full treatment price.

This is a deliberate commitment to clinical integrity. Some providers treat every appointment as a guaranteed procedure; we don’t. You can book knowing that you will receive a genuine specialist assessment first, and that treatment only proceeds when a senior clinician believes it is genuinely warranted.

If an injection isn’t appropriate, your consultant will explain why and set out the alternatives. This may include physiotherapy, a different injection, such as PRP, or onward referral, meaning you still leave with a clear plan.

Many patients notice improved comfort within a few days to two weeks, as the local anaesthetic settles and the steroid takes effect on the inflammation. The fullest benefit usually builds over the following weeks, particularly when combined with regular stretching and supportive footwear.

A well-placed steroid injection has a good success rate for relieving stubborn heel pain, and for many people a single injection, alongside ongoing stretching and orthotics, is enough to break the pain cycle. Relief can last several months, and in some cases is long-lasting. Results vary with how long the problem has been present and individual factors, so your consultant will give you a realistic picture based on your own assessment.

There is no significant downtime, but a short period of relative rest helps the injection work. It is sensible to avoid high-impact activity, long walks and standing for prolonged periods for the first 24–72 hours. Some mild soreness in the heel for a day or two is normal.

The most important parts of aftercare are regular calf and plantar-fascia stretching and supportive footwear or orthotics to offload the heel. These address the mechanical overload that caused the problem and protect the result of the injection. Your consultant will recommend specific stretches, and many patients benefit from a short course of physiotherapy alongside the treatment.

You will receive clear written aftercare guidance, and our team remains available if you have any questions as you recover.

A steroid injection is usually considered after first-line measures like rest, calf and fascia stretching, supportive footwear and orthotics, have been tried and heel pain persists. It is most useful for calming stubborn inflammation so you can return to the stretching and loading that achieve a lasting recovery.

Generally, steroid injections into the heel carries a small risk of fat-pad atrophy (thinning of the natural cushioning under the heel) or, rarely, fascial rupture if it is poorly placed or repeated too often. This is precisely why our injections are ultrasound-guided and fat-pad-sparing, and why your consultant will limit how often a steroid is repeated.

Other options your consultant may discuss include further physiotherapy, shockwave therapy, or alternative injectables, covered on our broader plantar fasciitis injection page. Where a steroid injection is the right choice, ultrasound guidance makes it as safe and effective as possible.

An ultrasound-guided steroid injection for plantar fasciitis at The Harley Street Ultrasound Group is £525, all fees inclusive. There are no extra charges for the consultant assessment, the diagnostic ultrasound, the procedure itself, or your written report.

What’s included in the price:

• Consultant specialist assessment and diagnostic ultrasound
• Ultrasound-guided steroid injection into the plantar fascia
• Local anaesthetic and all consumables
• Written report and tailored aftercare guidance
• No referral required and no waiting list

Importantly, if your consultant assesses you and decides an injection is not clinically appropriate, you are charged only at our standard diagnostic ultrasound rate, not the procedure price. We accept self-pay and most major UK private health insurers; please confirm cover with your insurer before booking.

Coming to us privately does not affect your NHS care. Our goal is to get you answers and treatment quickly, without the long waits often involved in accessing injection therapy on the NHS.

You are seen by a consultant specialist who can assess, diagnose and, where appropriate, treat your heel pain in a single visit. Your report and images can be shared securely with your NHS GP or any specialist, and if your situation needs onward NHS care your consultant will write to your GP accordingly.

We don’t want you waiting months in pain when effective treatment is available now.