Managing Chronic Achilles Tendon Pain: Beyond Rest and Ice

Achilles tendon pain that persists beyond 6 weeks may indicate tendinopathy, a degenerative condition in which the tendon’s structure changes over time. Unlike acute injuries, this condition often does not improve with rest and ice alone, as prolonged inactivity may reduce the tendon’s ability to tolerate the stresses of everyday movement.  Recovery commonly involves controlled loading exercises that help reorganise collagen fibres and support the tendon’s natural repair processes.

Why Rest Alone May Not Resolve Chronic Achilles Pain

For tendons to adapt and regain strength, they need gradual and appropriate loading through movement. Without this stimulus, the tissue may remain in a weakened state and become less able to support the demands of daily activity. Moving from complete rest to a structured rehabilitation programme can help the tendon adapt and may reduce the cycle of recurring pain.

• Breaking the “Rest-Try-Fail” Cycle: Stopping activity until the pain disappears may leave the tendon unprepared for renewed stress, which can cause symptoms to return when activity resumes.
• Supporting Tissue Repair: Tendons respond to gradual tension by producing and reorganising collagen fibres, which helps improve their strength and resilience. Prolonged inactivity may limit these natural adaptation processes.
• Addressing the Root Cause: Measures such as ice or anti-inflammatory medication may help relieve symptoms, but structured loading exercises aim to support tendon remodelling associated with chronic tendinopathy.

Eccentric Loading: The Foundation of Achilles Rehabilitation

Eccentric exercises, where muscles lengthen while under load, are a commonly used approach for managing chronic Achilles tendinopathy. One example is the Alfredson protocol, which involves heel drops on a step: the patient lowers the heel below the step while keeping the knee straight, then uses the unaffected leg to return to the starting position.

The routine often includes:

• Three sets of 15 repetitions, twice daily
• Exercises with both straight and bent knees to target different parts of the calf
• Pain during exercise is tolerated up to moderate levels
• Gradual progression by adding weight via a backpack or weighted vest once bodyweight exercises are comfortable

Improvements may be seen after six to twelve weeks of consistent practice. The exercises aim to support collagen remodelling and improve tendons’ strength and stiffness, processes that develop gradually over months rather than days.

💡 Did You Know?
Tendons adapt to load much more slowly than muscles. This explains why calf strength can return quickly, whilst the Achilles tendon remains vulnerable. Runners who increase training based on how their muscles feel, rather than allowing time for the tendon to adapt, may risk re-injury.

Heavy Slow Resistance Training

Heavy, slow resistance training can be used as an alternative or addition to eccentric protocols. It involves gym-based exercises with controlled movement and heavier loads to gradually strengthen the Achilles tendon.

• Supporting Tendon Adaptation: Seated and standing calf raises performed with heavier weights, usually six to eight repetitions per set, help strengthen the tendon and improve its stiffness.
• Structured Training Schedule: Completing three sessions per week with rest days in between allows the tendon to adapt safely without overloading.
• Controlled Progression: Using weight machines helps manage the load and track progression, which can be helpful for people who find daily high-volume exercises, like traditional heel drops, challenging.

Shockwave Therapy: When Loading Alone May Not Be Enough

Extracorporeal shockwave therapy uses acoustic waves to the affected tendon, which may help stimulate the body’s healing responses and reduce pain. For chronic Achilles tendon pain that has not improved after several months of loading exercises, shockwave therapy can sometimes help support recovery in suitable candidates.

Treatment typically involves:

1. Three to five sessions, spaced one week apart
2. Approximately fifteen minutes per session
3. Thousands of pulses delivered to the affected area
4. Discomfort during treatment varies from mild to moderate and depends on how strong the pulses feel and individual sensitivity

Shockwave therapy is typically used alongside a structured loading programme rather than on its own. Combining these approaches can support both the tendon’s healing and the mechanical adaptation needed for long-term recovery. Continuing eccentric exercises after shockwave sessions may further support tendon strengthening.

Running Modifications During Recovery

Stopping running completely is often unnecessary. By adjusting running intensity and technique, runners can maintain fitness while avoiding excessive strain on the healing tendon.

• Speed and Terrain Control: Running at a slower pace can place less strain on the tendon than simply reducing your distance. Avoiding hills, especially downhill sections, can also help limit excessive pressure on the Achilles.
• Surface Considerations: Shifting to softer surfaces can reduce impact forces, but consistent paths such as tracks are often preferred to avoid unexpected ankle movement on uneven ground.
• Cadence and Strike Pattern: Shorter, quicker steps can reduce stress on the Achilles by encouraging a midfoot strike. Any changes to stride should be made gradually to avoid placing new stresses elsewhere.

⚠️ Important Note
Pain that intensifies during a run or worsens the following morning may indicate that the tendon is being overloaded. Mild discomfort that stays the same or eases during activity and returns to normal within 24 hours is generally acceptable.

Footwear and Foot Support

Choosing the right shoes and using supportive aids can help reduce strain on the Achilles tendon during recovery. These temporary measures can manage symptoms and protect the tendon while it remodels.

• Heel Lifts: Temporary heel lifts can reduce tendon strain by lowering the ankle’s upward bending during movement. Most patients gradually stop using them as symptoms improve, which also helps prevent the calf muscles from shortening.
• Shoe Type: Shoes with a higher heel drop and good cushioning are generally recommended during recovery, as they reduce strain on the tendon. Avoid switching to minimalist or zero-drop shoes too soon, as this can increase stress and worsen symptoms.
• Orthotics: Custom orthotic devices may help control excessive inward rolling of the foot, reducing extra forces transmitted to the tendon.

What Our Orthopaedic Surgeon Says

Clinical examination helps to determine whether the pain is at the tendon’s insertion (heel) or in the midportion, as each type may require a slightly different exercise approach for effective healing.

Imaging tests, such as ultrasound or MRI, can show the extent of tendon changes and rule out other conditions like bursitis or partial tears.

This professional assessment allows the orthopaedic surgeon to create a recovery plan tailored to your specific injury rather than using a generic approach.

Gradually Returning to Running

Returning to full running should follow a gradual plan based on how the tendon responds, rather than fixed timelines. Starting with run-walk intervals allows you to test the tendon under load without overdoing continuous running.

Initial sessions may involve:

1. One-minute running intervals alternated with two-minute walking periods
2. Total session duration of twenty to thirty minutes
3. Progression to longer running intervals if there is no increase in pain the next day
4. Increase the overall distance each week in small, manageable steps

Once your tendon tolerates this volume, intensity can be increased. Speed work and hill training should be reintroduced last, typically after several weeks of comfortable, easy running.

Continue eccentric exercises throughout the return-to-running phase to support ongoing tendon adaptation, as running alone may not provide enough stimulus for tendon remodelling, especially at lower training volumes.

When to Seek Professional Help

• Pain persisting beyond three months despite regular home-based loading exercises
• Sudden sharp pain during activity, which may indicate a tendon tear
• Swelling, warmth, or changes in the skin over the tendon
• Pain that makes walking difficult or uncomfortable
• Morning stiffness lasting more than thirty minutes that does not improve over several weeks
• Symptoms affecting both Achilles tendons simultaneously

Commonly Asked Questions

How long does chronic Achilles tendinopathy take to heal?

Most cases improve over three to six months of consistent rehabilitation. Some individuals may take longer, particularly those with extensive tendon changes or longer symptom duration before starting treatment.

Can I run through Achilles tendon pain?

Running is possible if the pain is mild, does not worsen during the run, and returns to baseline within 24 hours. Pain that progressively worsens or requires days to settle suggests the tendon is overloaded. Adjusting pace, distance, and running surface can help maintain safe training levels during recovery.

Why does my Achilles hurt more in the morning?

Tendons stiffen during prolonged rest. Morning stiffness reflects the tendon’s current condition. Stiffness that lasts beyond the first few minutes of walking may indicate active tendinopathy. As healing progresses, morning symptoms usually become shorter and less intense.

Should I stretch my calf muscles with Achilles tendinopathy?

Aggressive stretching can make insertional tendinopathy worse. Gentle calf stretches may help with midportion but should not cause pain. Loading exercises are generally recommended as the main approach in rehabilitation, with stretching used as a supportive measure when appropriate.

Is surgery ever needed for chronic Achilles tendinopathy?

Many cases improve with non-surgical treatment if enough time and appropriate rehabilitation are given. Surgery is considered after 12 or more months of persistent symptoms despite consistent conservative management. Surgical options may include removal of damaged tissue, with recovery typically requiring several months before returning to sport.

Please note: Recovery experiences and timelines can vary based on individual health factors, the severity of tendon changes, and adherence to rehabilitation programmes. The information provided here is for general educational purposes only. Always consult with healthcare professionals for personalised advice tailored to your specific condition.

Next Steps

Chronic Achilles tendinopathy is managed through progressive loading using eccentric exercises or heavy slow resistance training. Most cases improve within three to six months of consistent rehabilitation, though some individuals may require additional treatments like shockwave therapy. A gradual return to running should be based on tissue tolerance rather than fixed timelines.

If you are experiencing persistent Achilles tendon pain, morning stiffness lasting more than thirty minutes, or pain that affects normal walking, consult an orthopaedic surgeon. Clinical examination and imaging can help distinguish between insertional and midportion tendinopathy and develop a treatment plan specific to your condition.