What causes ankle and foot pain?

The foot and ankle carry your full body weight with every step, so pain here usually comes from one of a few recognisable sources.

• Repetitive strain on the tendons and ligaments of the foot and ankle — from running, standing all day, worn or unsupportive footwear, or a sudden increase in activity. This is the most common cause of heel, arch and Achilles pain.

• A direct injury, such as a sprained ankle, a fracture, or a heavy knock to the foot.

• Wear and tear in a joint (osteoarthritis), often turning up years after an old sprain or fracture that never fully settled.

• Inflammation of a tendon, the joint lining, or a fluid-filled bursa — from overuse, inflammatory arthritis, or a flare after activity.

• A trapped or irritated nerve between the toes or around the ankle, which causes burning, tingling or sharp pain rather than a dull ache.

Because foot and ankle pain can come from the bone, joint, tendon, ligament or a nerve — all packed into a small space — getting an accurate diagnosis first makes a real difference to choosing the right treatment.

​

How is ankle and foot pain diagnosed?

We start with a clinical assessment — your history, how you walk, the movements and footwear that bring on your pain, and specific tests that help tell plantar fasciitis, Achilles tendinopathy, joint arthritis and nerve problems apart.

Where it would change the diagnosis or treatment, we use diagnostic ultrasound at the same appointment. Ultrasound lets us look directly at the tendons, plantar fascia, joint and nerves in real time, so we can:

• Confirm which structure is actually causing your pain, rather than relying on symptoms alone.

• See tendon thickening or tearing, plantar fascia thickening, a Morton's neuroma, or fluid within the joint directly.

• Check whether an injection is likely to help, and exactly where it should be placed.

It's painless, takes only a few minutes, and the images are reviewed with you there and then. Occasionally an X-ray or MRI is useful too — usually to look more closely at bone or deeper soft tissue — but ultrasound is our first choice for assessing foot and ankle tendons, joints and nerves.

​

Ankle and foot injections

When rest, footwear changes, physiotherapy and rehab haven't been enough, an injection can settle the pain and inflammation enough to let rehabilitation do the rest. At Bristol Joint Injections we use two main types for ankle and foot conditions, and choose between them based on your diagnosis, the ultrasound findings, and what you're hoping to achieve.

​

Steroid injections

A fast-acting anti-inflammatory that reduces swelling and pain, usually combined with local anaesthetic for comfort. Well suited to a painful flare of plantar fasciitis, Morton's neuroma, or joint inflammation in the ankle.

​

Hyaluronic acid injections

Hyaluronic acid occurs naturally in healthy joints and tendons, where it lubricates and supports tissue repair. It's our preferred option around the Achilles tendon, where steroid carries a small risk of weakening the tendon, and a well-tolerated option for ankle joint wear.

 

​​

​

​

​

​

​

​

​

​

​​​​​​

 

For Achilles tendon problems and for supporting an arthritic ankle joint longer-term, hyaluronic acid is frequently the better fit. We'll talk you through which suits your situation.

​

Ultrasound-guided ankle and foot injections

The foot and ankle pack tendons, ligaments, nerves, blood vessels and a protective fat pad into a small space. Injecting “blind,” by feel alone, means guessing at depth and direction — and in the foot, a misplaced injection can mean injecting steroid into the heel fat pad, the plantar fascia itself, or directly into a tendon. Ultrasound guidance removes the guesswork.

Using live imaging, we watch the needle in real time and steer it precisely to the plantar fascia, the space around a tendon, a joint, or the exact location of a Morton's neuroma — avoiding nearby nerves, blood vessels and the fat pad that cushions your heel. Research and clinical guidelines consistently show ultrasound-guided injections are more accurate than landmark-guided ones, which translates into better, more reliable outcomes.

Why it matters: a steroid or hyaluronic acid injection only works as well as its placement. Ultrasound guidance means every injection we give is confirmed, on screen, to be exactly where it needs to be — and away from structures it shouldn't touch.

​

What happens during an ankle or foot injection?

1. Scan and plan. We scan the ankle or foot to confirm the diagnosis, identify the exact target, and plan the safest approach.

2. Skin preparation. The skin is cleaned, and a local anaesthetic is often used, either mixed with the steroid or applied first to numb the area.

3. Guided injection. Watching the live ultrasound image, the needle is guided to the target and the medication is delivered. Most people feel a brief pressure or scratch rather than significant pain.

4. Done. A small dressing is applied and you can get your sock and shoe back on straight away. The whole visit, scan included, typically takes around 15–30 minutes.

Most people are comfortable to walk and drive themselves home afterwards, though it's sensible to take the weight off your foot where you can for the rest of the day and to arrange a lift if you'd feel more comfortable with one — especially after a heel or plantar fascia injection. Your clinician will give you specific aftercare advice for your injection before you leave.

​

How quickly will the injection work?

This depends on which injection you've had:

• Steroid: the local anaesthetic often gives some numbness for a few hours. It's common for the area to feel slightly more sore for a day or two as the steroid settles in, before the anti-inflammatory effect takes over — most people notice a clear improvement within 2 to 5 days, continuing to build over the following couple of weeks.

• Hyaluronic acid: relief tends to build more gradually, typically over 1 to 3 weeks, as the tissue responds, rather than arriving all at once.

Everyone responds a little differently, and supportive footwear, orthotics or a stretching and strengthening programme alongside the injection usually improve both the speed and durability of your recovery

​

How long will the effects last?

Steroid injections commonly provide relief for around 2 to 3 months, and for an inflamed ankle joint, often several weeks to a few months — long enough to break a painful cycle and let you progress with rehabilitation. Hyaluronic acid injections around the Achilles tendon or within an arthritic ankle joint often provide relief lasting several months or longer, and because it supports the tissue's own repair rather than only reducing inflammation, improvements can continue after the injection itself has been absorbed.

Results vary from person to person, and how long relief lasts also depends on what's causing your pain, how long you've had it, your footwear and activity levels, and whether you follow through with any exercise programme we recommend alongside the injection. We'll agree a follow-up plan with you so we can track your progress and adjust treatment if needed.

​

Are ankle and foot injections safe?

Yes — when performed by a trained practitioner under ultrasound guidance, both steroid and hyaluronic acid ankle and foot injections are routine, well-established procedures with a good safety record. As with any injection, there are some things to be aware of:

​

Steroid injections — things to be aware of

• Temporary increase in pain or swelling for up to 7–10 days

• Thinning of the heel's protective fat pad, or pale skin patches, especially with repeated injections in the same spot

• A small risk of weakening the plantar fascia or a tendon if injected directly into it, which is why ultrasound guidance and careful technique matter

• Brief facial flushing in some people

• Temporary rise in blood sugar for people with diabetes

• Small risk of infection — we use a strict sterile technique to minimise this

• Usually limited to around 2–3 injections per site each year

• After the injection you will be required to have relatively low impact through the foot or ankle for about 2 weeks

​​

Hyaluronic acid injections — things to be aware of

• Mild soreness or swelling at the injection site for a day or two is common

• Because it's a substance naturally found in the body, significant reactions are rare

• No known fat pad thinning or tendon weakening risk, so it's often preferred around the Achilles tendon

• Very rarely, a mild allergic-type reaction
  
  A note on the Achilles tendon: because a steroid injected directly into the Achilles tendon can weaken it and increase the risk of rupture, we're selective about using steroid here and often recommend hyaluronic acid or a peri-tendinous approach instead. Ultrasound guidance lets us see exactly where the needle tip is relative to the tendon fibres throughout.