Achilles tendinopathy is a condition that causes pain, swelling and stiffness of the Achilles tendon that joins your heel bone to your calf muscles. It is thought to be caused by repeated tiny injuries to the Achilles tendon. These may occur for a number of reasons, including overuse of the tendon – for example, in runners. Treatment includes rest, ice packs, painkillers and special exercises to help to stretch and strengthen the Achilles tendon. For most people, the symptoms of Achilles tendinopathy usually clear within 3-6 months of starting treatment.
Your Achilles tendon is an important part of your leg. It is found just behind and above your heel. It joins your heel bone (calcaneum) to your calf muscles. The function of your Achilles tendon is to help in bending your foot downwards at the ankle. (This movement is called plantar flexion)
Achilles tendinopathy is a condition that causes pain, swelling and stiffness of the Achilles tendon. It is thought to be caused by repeated tiny injuries (known as microtrauma) to the Achilles tendon. After each injury, the tendon does not heal completely, as should normally happen. This means that over time, damage to the Achilles tendon builds up and Achilles tendinopathy can develop.
There are a number of things that may lead to these repeated tiny injuries to the Achilles tendon. For example:
Achilles tendinopathy is also more common in people who have certain types of arthritis, such as ankylosing spondylitis or psoriatic arthritis. It is also thought that your genetic ‘makeup’ (the material inherited from your parents which controls various aspects of your body) may play a part for some people who develop Achilles tendinopathy. It is also more common in people who have high blood pressure, high cholesterol or diabetes
Achilles tendinopathy used to be known as Achilles tendonitis. In general, ‘itis’ usually refers to inflammation, so tendonitis would mean inflammation of a tendon. However, Achilles tendinopathy is now thought to be a better term to use because it is thought that there is little or no inflammation that causes the problem.
If the Achilles tendon is torn, this is called an Achilles tendon rupture. See separate leaflet called Achilles Tendon Rupture for more details.
About 6 in 100 inactive people develop Achilles tendinopathy at some point in their lifetime. However, the chance of it developing is higher in athletes or those who train regularly or do a lot of exercise. It can be a particular problem for some runners. It used to be thought that it is more common in men than in women but this may not be true.
The main symptoms include pain and stiffness around the affected Achilles tendon. Pain and stiffness tend to develop gradually and are usually worse when you first wake up in the morning. (Severe pain that comes on suddenly and difficulty walking can be symptoms of Achilles tendon tear (rupture). See a doctor urgently if you develop these symptoms.)
Some people have pain during exercise but, in general, pain is worse after exercise. Runners may notice pain at the beginning of their run, which then tends to ease and become more bearable, followed by an increase in pain when they have stopped running. Pain due to Achilles tendinopathy may actually prevent you from being able to carry out your usual everyday activities such as walking to the shops, etc. You may notice that you have pain when you touch the area around your Achilles tendon. There may also be some swelling around this area.
Your doctor will usually diagnose Achilles tendinopathy because of your typical symptoms and from examining your Achilles tendon. They may feel for swelling or tenderness of the tendon. They may also ask you to do some exercises to put some stress on your Achilles tendon. For example, they may ask you to stand on the affected leg and raise your heel off the ground. For most people with Achilles tendinopathy this movement brings on (reproduces) their pain. If this does not bring on your pain, your doctor may ask you to hop on that foot, either on the spot or in a forwards direction. Your doctor may also do some other tests to make sure that there are no signs that you have torn (ruptured) your Achilles tendon. For example, squeezing your calf muscles and looking at how your foot moves.
There are a number of treatments that may help. The treatments below are usually suggested first. They are all considered as conservative treatments. This means treatments that do not involve surgery.
Rest and time off from sporting activities are important if you have Achilles tendinopathy. At first, you should stop any high-impact activities or sports (such as running). As pain improves, you can restart exercise as your pain allows. It is thought that complete rest, if it is prolonged, can actually be worse for the injury. Talk to your doctor or physiotherapist about when you should start exercising again.
Painkillers such as paracetamol or ibuprofen may help to relieve pain. Ibuprofen is from a group of medicines called non-steroidal anti-inflammatory drugs (NSAIDs). However, you should not use ibuprofen or other NSAIDs for more than 7-14 days if you have Achilles tendinopathy. This is because they may possibly reduce the ability of the tendon to heal in the long term. They may also cause symptoms of Achilles tendinopathy to be masked, or covered up, which again may delay healing.
Note: side-effects sometimes occur with anti-inflammatory painkillers. Stomach pain, and bleeding from the stomach, are the most serious. Some people with asthma, high blood pressure, kidney failure and heart failure may not be able to take anti-inflammatory painkillers. So, check with your doctor or pharmacist before taking them if you are unsure if they are suitable for you.
Ice treatment may be useful for pain control and may help to reduce swelling in the early stages of Achilles tendinopathy. An ice pack should be applied for 10-30 minutes. Less than 10 minutes has little effect. More than 30 minutes may damage the skin. Make an ice pack by wrapping ice cubes in a plastic bag or towel. (Do not put ice directly next to skin, as it may cause ice burn.) A bag of frozen peas is an alternative. Gently press the ice pack on to the injured part. The cold from the ice is thought to reduce blood flow to the damaged tendon. This may reduce pain. Do not leave ice on while asleep.
Some special exercises to help to stretch and strengthen your Achilles tendon have been proven to be helpful. You should aim to do these every day. Such exercises may help with pain control and stiffness. A physiotherapist may be able to help you with these exercises as needed. They may also use other treatments such as ultrasound and massage to help relieve symptoms and promote healing of your Achilles tendon.
The following exercises can be used to help treat Achilles tendinopathy:
An orthotics specialist may suggest changing your footwear or putting special inserts in your shoes, such as inserts to lift your heel. This may help to reduce pain and symptoms.
Injection of a steroid medicine is a common treatment for some tendon injuries. However, the use of steroid injections for the treatment of Achilles tendinopathy is controversial and it is not approved in the UK. If steroids are injected directly into the Achilles tendon, there is a risk of damaging the tendon further. There have been cases where they have caused the tendon to tear (rupture). Another option is to inject the steroid around the Achilles tendon. But again, this is not approved in the UK. However, it is thought that this may have less effect on the tendon itself and be less likely to cause damage. Some specialists do suggest this treatment, using an ultrasound scan to guide the needle to the right position, to help to control pain.
For most people, the symptoms of Achilles tendinopathy usually clear within 3-6 months of starting conservative treatment, as described above. In general, the earlier the problem is recognised and treatment started, the better the outcome. If your symptoms have not improved after 3-6 months, your doctor may suggest that they refer you to a specialist orthopaedic surgeon or sports medicine doctor. However, this timescale may change depending on your symptoms, your sporting activities, etc.
There are some treatments that some specialists may suggest to help treat Achilles tendinopathy. You should discuss these treatments fully with your specialist, including their pros and cons, before any treatment is started. These treatments may not be widely available on the National Health Service (NHS). Some may also be carried out as part of a trial to look at the best ways of treating Achilles tendinopathy. Such treatments may include:
Around 1 in 4 people who have persisting pain due to Achilles tendinopathy has surgery to treat the condition. Most people have a good result from surgery and their pain is relieved. Surgery involves either of the following:
Complications from surgery are not common but, if they do occur, can include problems with wound healing.
There is a risk of tearing (rupturing) your Achilles tendon if you have Achilles tendinopathy. This is because the tendon is damaged and weaker than usual. However, this risk is usually quite low. Severe pain around the Achilles tendon that develops suddenly may be a sign of tendon rupture. See a doctor urgently if you think that you may have ruptured your Achilles tendon.
If you do have problems with one Achilles tendon, there is also an increased chance that you will develop problems with the other over time.
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