Achilles Tendinopathy
Achilles tendinopathy is a load-related condition of the large tendon connecting the calf muscles to the heel bone — the tendon that powers every step, climb, and push-off. At Modern Physio we focus on understanding the root-cause of your problem & personalizing your treatment for lasting results.
Understanding Achilles Tendinopathy
Achilles tendinopathy is a load-related condition of the large tendon connecting the calf muscles to the heel bone — the tendon that powers every step, climb, and push-off. It comes in two forms that behave differently and are treated differently. Mid-portion tendinopathy affects the tendon two to six centimetres above the heel and is the more common pattern, typically in runners and in people who have increased their activity faster than the tendon could adapt. Insertional tendinopathy affects the point where the tendon attaches to the heel bone itself, is aggravated by positions that compress the tendon against the bone — such as stretching the calf or walking uphill — and needs those positions managed carefully in early rehabilitation. Modern understanding has moved on from calling this 'tendinitis': the problem is less an inflammation to be cooled down and more a tendon whose structure has reacted to being asked for more than it could deliver, and whose treatment is therefore not rest but progressive, patient loading. Structured calf-loading exercise — a lineage that began with eccentric heel-drop protocols and has since broadened to include heavy, slow strengthening — is the best-supported treatment, and it is the core of what we do at Modern Physio in Jaipur. Two honest warnings belong in any introduction to this condition. First, recovery is slow: meaningful change is measured in months, not weeks, and symptoms commonly take six months to a year to resolve fully even with good rehabilitation. Second, a sudden snap in the tendon with immediate loss of push-off is a different injury altogether — a rupture — and needs urgent medical assessment. Physiotherapy cannot rush tendon biology, but it can load the tendon in the right way, in the right order, so that it steadily rebuilds the capacity your running, sport, and daily life demand.
Common Symptoms
- Pain and stiffness in the Achilles tendon that is at its worst with the first steps in the morning
- Pain at the start of a run or walk that eases as you warm up, then returns worse afterwards or the next day
- Tenderness when the tendon is squeezed, either a few centimetres above the heel or directly at the heel bone
- A visible or palpable thickening or nodule in the tendon in longer-standing cases
- Pain with hopping, jumping, climbing stairs, or rising onto tiptoes
- Stiffness in the tendon after sitting for a while, easing with a few minutes of movement
- In insertional cases, pain at the back of the heel aggravated by uphill walking, stairs, and calf stretching
- Discomfort from firm shoe backs pressing on the heel in insertional cases
- Reduced push-off power on the affected side when walking fast or running
- Mild swelling or warmth around the tendon after heavier activity
- A gradual creep of symptoms from post-exercise stiffness only, to pain during exercise, to pain with daily walking
How Common Is It?
Achilles tendinopathy is one of the most common tendon problems seen in physiotherapy practice. It is frequent among runners and people who play running and jumping sports such as badminton, football, and basketball, but a large share of cases occur in people who are not athletes at all — often in middle age, sometimes after nothing more than a period of increased walking or a change of footwear. Mid-portion tendinopathy is the more common of the two patterns. Symptoms that have been present for months or years before assessment are common, and long-standing cases respond to loading programmes too, though usually more slowly.
Causes & Risk Factors
- A sudden increase in running distance, speed work, or hill training beyond what the tendon was conditioned for
- Returning to sport or running after a long gap at the previous intensity rather than rebuilding gradually
- Calf weakness, which forces the tendon to work closer to its capacity with every stride
- Age-related changes in tendon structure, which make the tendon slower to adapt from the forties onwards
- An abrupt change to flatter or more minimal footwear without a transition period
- For insertional tendinopathy, repeated compression of the tendon against the heel bone in dorsiflexed positions such as uphill walking and aggressive calf stretching
- Long hours of standing or walking occupations, which keep baseline tendon load high
- Higher body weight, which raises the load on the tendon with every step
- Metabolic conditions such as diabetes and raised cholesterol, which are associated with reduced tendon resilience
- A previous episode of Achilles pain that settled with rest but was never rehabilitated with strengthening
Our Diagnosis Process
- A detailed history of your training, footwear, and activity over recent months, since the story of load usually explains the tendon's complaint
- Precise palpation of the tendon to distinguish mid-portion from insertional tendinopathy, which changes the early rehabilitation plan
- Single-leg heel raise testing to measure calf strength, endurance, and pain response compared with the other side
- Assessment of pain behaviour with loading tests such as hopping, appropriate to how irritable the tendon is
- Measurement of ankle flexibility and assessment of foot posture and lower limb mechanics
- Screening of the whole limb — calf, hamstring, and hip strength — since deficits above the tendon change the load passing through it
- Careful exclusion of Achilles rupture where the history suggests it, including calf squeeze testing, with urgent medical referral if a rupture is suspected
- Referral for imaging or doctor review when the diagnosis is unclear, when a rupture or partial tear is suspected, or when symptoms fail to respond to an appropriately progressed loading programme
Our Treatment Approach
- Education first: understanding that the tendon needs progressive loading rather than rest, and that timelines are measured in months, is itself part of effective treatment
- Load management rather than total rest — reducing the activities that spike symptoms while keeping the tendon working at a tolerable level
- Isometric and early calf-loading exercises to begin strengthening at a level an irritable tendon can accept
- A progressive calf-strengthening programme at the core of treatment — built on the eccentric heel-drop tradition but using the fuller modern toolkit of heavy, slow resistance work progressed over months
- For insertional tendinopathy, early modification of range — strengthening without deep heel drops below level ground — and temporary heel raises in footwear to reduce compression at the heel bone
- Progression of loading from strength work to spring-like activities such as hopping and skipping, which prepare the tendon for running
- A structured, graded return to running using symptom response over the following 24 hours as the guide for progression
- Strengthening of the hips and the rest of the kinetic chain so that the tendon is not left compensating for weakness elsewhere
- Manual therapy for the calf and ankle as an adjunct for comfort and mobility, never as a substitute for loading
- Electrophysical modalities used selectively for short-term pain relief alongside the exercise programme
- Footwear advice, including transition planning for shoe changes and temporary heel elevation where appropriate
- Criteria-based return to sport, with regular reassessment and honest adjustment of the plan if progress stalls
Key Highlights
Loading programmes distinguishing mid-portion from insertional tendinopathy, which are managed differently
Progressive calf strengthening based on the best-supported evidence for tendon recovery
Honest timelines — months, not weeks — with milestones so you can see progress objectively
Rupture screening at assessment and clear red-flag guidance
Recovery & Prevention Tips
- Expect a marathon, not a sprint: tendons adapt slowly, and consistent loading over months beats intensive effort over weeks
- Do not rest completely — a tendon that is never loaded loses capacity, and symptoms usually return the moment activity resumes
- Use the 24-hour rule: some discomfort during exercise is acceptable if it settles by the next morning; pain that is worse the next day means the load was too much
- Do your strengthening consistently, on the scheduled days, even once you start feeling better — the gains that protect you arrive after the pain leaves
- If you have insertional tendinopathy, avoid aggressive calf stretching and deep heel drops early on; they compress the tendon against the bone and commonly aggravate it
- Expect morning stiffness to be the last symptom to leave, and use it as a barometer of how the tendon is coping with your week
- Keep your aerobic fitness with cycling or swimming while running is being rebuilt gradually
- Make footwear changes gradually, and consider a temporary heel raise if your physiotherapist recommends one
- Watch your total weekly load — running, sport, long walks on hard ground, and long days on your feet all count towards the same tendon budget
- Seek urgent medical help if you ever feel a sudden snap in the tendon with immediate weakness — that is a different injury and needs assessment the same day
Products That Can Help
Supports and equipment we fit at the clinic that patients with this condition commonly use alongside treatment — never instead of it.
Evidence & Sources
The Dutch multidisciplinary guideline on Achilles tendinopathy recommends progressive tendon-loading exercise as the primary treatment, advises patients that recovery commonly takes months up to a year, and does not recommend injection therapies as initial treatment.
de Vos et al. — Dutch multidisciplinary guideline on Achilles tendinopathy (British Journal of Sports Medicine, 2021)A Cochrane review of injection therapies for Achilles tendinopathy found insufficient evidence from randomised trials to support their routine use, with a lack of clear benefit over placebo across the injection types studied.
Cochrane Database of Systematic Reviews — Injection therapies for Achilles tendinopathyThe NHS advises that tendon problems are managed with relative rest from aggravating activity followed by a gradual return to movement and exercise, and recommends seeing a GP if symptoms do not improve or are severe.
NHS — TendonitisFrequently Asked Questions
How long does Achilles tendinopathy take to get better?
Honestly: months. Many people notice the trend improving within six to twelve weeks of consistent loading, but full resolution commonly takes six months and sometimes up to a year, particularly when symptoms were present for a long time before treatment started. This is not a failure of treatment — it is the speed at which tendon tissue adapts. We track progress with objective measures such as heel-raise capacity and morning stiffness, so you can see improvement even in the weeks when the pain seems stubborn. Beware of anything promising a fast fix for this condition.
Should I stop running completely?
Usually not, and often it is counterproductive. Complete rest lets the tendon lose capacity, so pain frequently returns the moment running resumes. The better approach is load management: reducing volume and intensity to a level your tendon tolerates — using pain during and, importantly, the morning after as the guide — while the strengthening programme rebuilds capacity underneath. Some irritable tendons do need a short period away from running, but the plan is always a managed reduction and a graded return, not an open-ended stop.
What is the difference between mid-portion and insertional Achilles tendinopathy?
Location and, crucially, what aggravates them. Mid-portion tendinopathy sits two to six centimetres above the heel and generally tolerates loading through a full range. Insertional tendinopathy sits where the tendon attaches to the heel bone and is aggravated by compression — deep heel drops, calf stretching, uphill walking, and low or hard shoe backs. Early insertional rehabilitation therefore avoids loading into a deeply stretched position and often uses temporary heel raises, while mid-portion programmes can use fuller range sooner. Getting this distinction right at assessment prevents weeks of well-intentioned exercises that quietly make things worse.
Are eccentric heel drops the only exercise that works?
No. Eccentric heel-drop protocols were the breakthrough that established loading as the treatment for this condition, and they remain useful, but research since has shown that other forms of progressive calf loading — particularly heavy, slow resistance training — achieve comparable results. What matters is not the branded protocol but the principles: sufficient load, progressed over months, adjusted to your symptom response and tendon type. We build the programme around what your tendon needs and what your schedule can sustain, because the best protocol is the one you actually complete.
Should I get an injection or shockwave therapy for my Achilles?
The evidence urges caution on injections: a Cochrane review found insufficient evidence to support injection therapies for Achilles tendinopathy, and current guidelines do not recommend them as initial treatment. Corticosteroid injections in particular carry concerns around tendon weakening. Shockwave therapy has mixed evidence and is sometimes used as an adjunct in stubborn cases, but neither replaces loading. Our honest position: exercise-based rehabilitation is the treatment with the strongest support, and other options belong in a conversation with your doctor if a properly progressed programme has genuinely not delivered.
Should I see a doctor or a physiotherapist first for Achilles pain?
For gradually developing tendon pain and stiffness, a physiotherapy assessment is a reasonable first step — this condition is diagnosed clinically and its primary treatment is a loading programme. See a doctor first if you felt a sudden snap with immediate weakness, if the pain began abruptly rather than gradually, if the area is hot, red, and swollen with fever, or if you have a history of fluoroquinolone antibiotic use or inflammatory joint disease, which can change the picture. We refer onwards whenever assessment raises anything beyond straightforward tendinopathy.
When should I seek medical help urgently for an Achilles problem?
Seek same-day medical assessment if you feel or hear a sudden snap or pop at the back of the ankle followed by immediate weakness, difficulty pushing off, or inability to rise onto tiptoes — this suggests an Achilles rupture, which is managed very differently and where delayed diagnosis worsens outcomes. Also seek urgent care if the area becomes hot, red, and swollen with fever, or if the calf becomes swollen, tight, and tender without a clear cause, which needs assessment for a blood clot. A rupture can occur in a tendon that previously had tendinopathy, so a sudden dramatic change in a familiar pain should never be assumed to be more of the same.
Will my Achilles tendinopathy come back after treatment?
It can, and the honest answer is that the best insurance is continuing what got you better. Tendinopathy is fundamentally a capacity problem, and capacity fades when strengthening stops entirely. We recommend keeping a maintenance dose of calf strengthening after recovery, planning training increases gradually rather than in enthusiastic jumps, and treating any return of morning stiffness as an early signal to adjust load for a week or two rather than a reason for alarm. People who manage their tendon this way mostly stay ahead of it; people who stop everything the day the pain leaves are the ones we tend to meet again.
Medically Reviewed
This content was reviewed for medical accuracy by Dr. Surabhi Bansal, BPT, MPT (Ortho) with 14+ years of clinical experience.
At Modern Physio, all medical content undergoes a thorough review process to ensure accuracy and alignment with current physiotherapy standards. Our content is created to educate and should not replace professional medical advice. Learn more about our review process.
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