Introduction

Foot and ankle care · Achilles tendon

Achilles tendonitis (tendinopathy): heel pain assessment and treatment

    Dr Sean LeoOrthopaedic Surgeon, Singapore

    Clinic enquiries · Not an emergency service

    Illustrative image

    Most Achilles heel pain is a gradual, load-related problem.

    Most Achilles heel pain is a gradual, load-related problem.

    Most Achilles heel pain is a gradual, load-related problem.

    • Achilles tendonitis (tendinopathy) usually shows up as pain, stiffness or thickening at the back of the heel that builds up gradually with activity, rather than after a single injury.[2]
    • The first plan is usually to settle the tendon and then build its tolerance to load gradually. It is not complete rest, and it is not surgery.[1]
    • A sudden “pop” with difficulty pushing off is a different, acute problem. It is covered on the Achilles tendon rupture page.[2]
    • OrthoKinetics is Dr Sean Leo’s professional brand. Clinical care is provided through OrthoSports Orthopaedic & Sports Surgery. Dr Sean Leo is a specialist orthopaedic surgeon who cares for foot and ankle problems.

    What’s covered on this webpage

    Follow the route in order, or jump to the stop you need. Stops you have read are marked.

    The Achilles tendon joins the calf muscles to the heel.

    The Achilles tendon joins the calf muscles to the heel.

    The Achilles tendon joins the calf muscles to the heel.

    The Achilles is the largest tendon in the body. It connects the calf muscles to the heel bone, and you use it whenever you walk, run, climb stairs, jump or stand on your tiptoes.[2]

    Not every part of the tendon behaves the same way. The stretch about 2 to 6 cm above the heel has a relatively poor blood supply, and that is where overuse trouble in the middle of the tendon tends to concentrate.[3]

    The problem usually builds up gradually from repeated loading.

    The problem usually builds up gradually from repeated loading.

    The problem usually builds up gradually from repeated loading.

    What is commonly called “tendonitis” is usually a gradual, load-related change in the tendon, known medically as tendinopathy, rather than a simple, short-lived inflammation, although the two are usually not mutually exclusive.[1][2] Over time the tendon becomes thickened, painful and less tolerant of load.[1][2]

    This kind of trouble is typically not related to a specific injury. It results from repetitive stress on the tendon, and it often happens when the body is pushed to do too much, too quickly.[2]

    Several things can add up. The risk is multifactorial: it reflects an interaction of factors within the body, such as age, body weight, muscle weakness and tightness, previous injury and other health conditions, and factors around it, such as training errors, footwear and surfaces.[1] It is a common overuse problem in active people, and the average age of those affected is between 30 and 50 years.[1]

    A woman walks from her desk towards a bright window overlooking ordinary housing blocks and tree tops.

    It often starts with stiffness and pain around the heel.

    It often starts with stiffness and pain around the heel.

    It often starts with stiffness and pain around the heel.

    People commonly describe a pattern like this:[2]

    • pain and stiffness along the Achilles tendon in the morning;
    • pain along the tendon or at the back of the heel that gets worse with activity;
    • severe soreness the day after exercise;
    • thickening of the tendon;
    • swelling that is present all the time and gets worse through the day or with activity.

    The pain and stiffness are often most noticeable after a period of inactivity, such as sleep or long sitting. They tend to ease with a bout of activity, and may increase again afterwards.[1]

    These are useful clues for an assessment. They do not confirm by themselves which structure is responsible, because other problems around the heel and ankle can feel similar.[2]

    Is this an acute injury instead?

    Is this an acute injury instead?

    Is this an acute injury instead?

    If the pain came on suddenly during activity, especially with a “pop” at the back of the calf or heel, this may be a torn Achilles tendon rather than a gradual overuse problem.[2] A sudden pop with difficulty pushing off is a different problem from gradual overuse pain and should be assessed promptly.[2]

    That pattern is covered on its own page: Achilles tendon rupture.

    When should I get this assessed?

    When should I get this assessed?

    When should I get this assessed?

    Many people try basic self-management first, and that is a reasonable place to start. Pain that persists, is getting worse, or limits your walking or running despite that, is a good reason to be assessed. So is being unsure what the problem actually is.

    Safety note: This webpage is not an emergency service. A sudden “pop” at the back of the calf or heel should be assessed promptly. No list on this page can rule out a serious problem remotely.

    Assessment starts with the story and an examination.

    Assessment starts with the story and an examination.

    Assessment starts with the story and an examination.

    Diagnosis is primarily clinical. It rests on a gradually developing pain about 2 to 6 cm above the heel, together with tenderness when the middle of the tendon is pressed.[1]

    Two named tests may be used to help confirm that the pain comes from the tendon itself:[1][3]

    • The arc sign. The examiner feels for swelling or a nodule in the tendon while your ankle is moved through its range. The sign is positive when that swelling or nodule moves with the movement, which shows the problem sits within the tendon rather than the tissue around it.[3]
    • The Royal London Hospital test. The examiner finds the most tender point while your ankle is relaxed, then asks you to point your foot up and down. The test is positive when the tenderness clearly reduces or disappears once the tendon is under tension, which is another way of confirming that the pain comes from the tendon itself.[3]

    Assessment also looks at how the tendon performs. This can include heel-raise and hop tests (one-legged checks of how well the calf and tendon are working, such as rising onto the toes or hopping on one leg), and measures such as ankle movement, calf strength and endurance, and tenderness when the tendon is pressed. These are done and interpreted by a clinician, not as self-diagnosis.[1]

    What scans add

    Scans support the examination; they do not replace it. An X-ray shows bone, such as spurs.[2] An MRI is not necessary to diagnose Achilles tendonitis, and it is mainly important for planning surgery if non-surgical treatment has not worked.[2] Ultrasound is quicker and less expensive than MRI and can be done in an office setting, but its results depend more on the experience and skill of the person performing it.[2] There is conflicting evidence on how closely the severity of changes on a scan matches symptoms.[1]

    A man stretches one calf against a low wall beside a green school field in the early morning.

    The main treatment is graded loading, not complete rest.

    The main treatment is graded loading, not complete rest.

    The main treatment is graded loading, not complete rest.

    The tendon needs load to adapt. The central treatment is progressive loading, using either eccentric exercise or a heavy-load, slow-speed exercise programme, done at least twice a week within your pain tolerance, to reduce pain and improve function.[1] “Within your pain tolerance” matters: the aim is not to push through severe pain.[1]

    Complete rest is not the answer. Activity is adjusted rather than stopped, and you keep up your recreational activity within your pain tolerance while you rehabilitate.[1] How much activity suits you at each stage is worked out with your clinician.

    Other measures play smaller roles:

    • Calf stretching may help when your ankle has limited upward movement.[1]
    • Heel lifts and orthoses are not clearly supported for this condition.[1]
    • Night splints are not recommended.[1]
    • Anti-inflammatory medicines such as ibuprofen and naproxen can reduce pain and swelling enough to let you do the exercises, but they do not reduce the thickening of the tendon.[2]
    • Steroid (cortisone) injections into the Achilles tendon are not recommended, because they can cause the tendon to rupture, and research has shown significantly decreased tendon strength after steroid injection.[2]

    No single exercise or protocol fits everyone, and your response will guide how the plan is adjusted.

    When is surgery considered?

    When is surgery considered?

    When is surgery considered?

    Surgery is the exception, not the expected course. It is considered only if the pain has not improved after a sustained course of non-surgical treatment, commonly cited as 6 months.[2] Most people improve without it.[2]

    Structure / Patient / Goal

    Structure / Patient / Goal

    Deciding together

    Structure / Patient / Goal

    S

    Structure: what is affected?

    Structure is the tendon itself: which part is affected, where it sits, and how the surrounding heel and ankle are involved. It also includes what the assessment shows and what a test adds when testing is useful.

    P

    Patient: how does it affect you?

    Patient means you as a whole person. Your symptoms, how active you are, your general health, your preferences and your circumstances all shape which options are reasonable.

    G

    Goal: what are you hoping to return to?

    Goal is what matters to you, whether that is walking without pain, running or sport. A useful plan starts from a clear purpose.

    Your plan

    No single factor decides treatment alone, and one scan or one symptom does not determine the plan.

    Surgery removes the damaged part of the tendon.

    Surgery removes the damaged part of the tendon.

    Surgery removes the damaged part of the tendon.

    The operation cleans up the tendon by removing damaged tissue, a step called debridement.[2] For the type of Achilles tendonitis that affects the attachment at the heel (insertional), removing bone spurs from the heel in addition to the damaged tendon tissue is commonly performed with good outcomes.[2]

    Results are generally very good, but not universal. Studies on tendon debridement have reported a return to pre-surgical activity level in up to 75% of patients, with up to a 90% patient satisfaction rate.[2] Many people need up to 12 months of rehabilitation to reach maximum improvement.[2]

    Recovery is measured in weeks to months, not days.

    Recovery is measured in weeks to months, not days.

    Recovery

    Recovery is measured in weeks to months, not days.

    Recovery from Achilles tendonitis takes weeks to months.[1] It is guided by how the tendon responds to increasing load, not by a calendar date.[1]

    Most people improve, but results vary.[1] In a large group of runners, the median time to recovery was 82 days, with the quickest at 21 days and the longest at 479.[1] Even with early treatment, pain may last longer than 3 months.[2] Symptoms can also return if they are not properly managed early.[1]

    A woman walks briskly on a treadmill in a bright gym with tall windows overlooking greenery.

    Risks and complications

    Risks and complications

    Risks and complications

    Both paths carry real limits.

    Non-operative care. Steroid injections into the Achilles tendon are avoided because they can cause the tendon to rupture.[2] Symptoms can return if they are not properly managed early.[1]

    Surgery. Up to 20 to 30% of patients experience continued pain after surgery. This is the most common complication.[2] No result is guaranteed.

    OrthoKinetics Recovery Reflection

    Recovery reflection

    Why does neither resting completely nor pushing through seem to work?

    It is one of the more confusing things about a sore tendon. Stopping altogether can feel sensible, yet the tendon may not feel better for it. Pushing on regardless can be just as unhelpful. If you have tried both and neither worked, that is not a sign of doing it wrong. It is the nature of the problem, and it points towards a middle way.

    What would it mean to treat the tendon as something to be re-educated?

    A tendon responds to load in a measured, graduated way, so the useful approach is a conversation: a little load, watch the response, adjust. It is neither punishment nor avoidance. Seeing the tendon as something that is taught to tolerate more, gradually, changes the task from winning a contest to listening and adjusting.

    Load is the language a tendon responds to, and the useful skill is asking it in amounts it can answer.

    Illustrative image

    With you through the seasons

    Meet Dr Sean Leo

    Meet Dr Sean Leo

    A consultant orthopaedic surgeon whose clinical focus is the knee, sports injuries and the lower limb.

    • Dr Sean Leo is a consultant orthopaedic surgeon. OrthoKinetics is his professional brand; clinical services are provided through OrthoSports Orthopaedic & Sports Surgery at Mount Elizabeth Novena Specialist Centre and Connexion, Farrer Park Hospital.
    • His clinical interests include sports injuries, including those in adolescent athletes; ligament reconstruction; realignment surgery; cartilage repair and joint-preservation approaches; knee replacement; and technology-assisted hip and knee surgery.
    • The consistent aim is to return people to meaningful function and activity while avoiding unnecessary downtime.
    • Qualifications: MBBS, MRCS (Ed), MMed (Ortho), FRCSEd (Ortho).
    More detail: Meet Dr Sean Leo
    • Training and career: Dr Leo trained in medicine at the National University of Singapore and served in the Singapore Armed Forces Medical Corps from 2000 to 2012, where his work included the care of soldiers in physically demanding roles. He completed postgraduate orthopaedic training in 2009 and a one-year clinical fellowship at Royal North Shore Hospital in Sydney, Australia, before joining Changi General Hospital as an orthopaedic consultant in 2012, where he later held the positions of Senior Consultant and Director of the Hip and Knee Service. With seniority, his educational contribution has evolved towards mentorship and support for junior doctors.
    Dr Sean Leo standing in clinical scrubs against a plain wall
    Dr Sean LeoOrthopaedic Surgeon · consultations through OrthoSports

    Questions people often ask

    Common Achilles tendonitis questions

    Common Achilles tendonitis questions

    Is Achilles tendonitis inflammation or wear and tear?

    Achilles tendonitis (tendinopathy) is usually a gradual, load-related change in the tendon rather than a simple, short-lived inflammation. The two often overlap, so it is best seen as a pattern of overload, not an all-or-nothing label.[1][2]

    Why does the back of my heel hurt, especially in the morning or after exercise?

    Pain and stiffness along the tendon in the morning, pain at the back of the heel that worsens with activity, and severe soreness the day after exercise are typical of this problem. Other heel and ankle problems can feel similar, so an assessment is what confirms the cause.[1][2]

    Does Achilles tendonitis get better on its own?

    Most people improve, though results vary. Recovery usually takes weeks to months and is guided by how the tendon responds to gradually increasing load, because complete rest is not the answer. Symptoms can return if they are not managed properly early.[1]

    Do I need to stop running?

    Complete rest is not indicated for this kind of Achilles pain. You are advised to continue recreational activity within your pain tolerance while you rehabilitate. How much running suits you at each stage is worked out with your clinician.[1]

    What exercises help Achilles tendon pain?

    Mechanical loading of the tendon is the central treatment. It can take the form of eccentric exercise or a heavy-load, slow-speed programme, done at least twice a week within your pain tolerance, to reduce pain and improve function.[1]

    Do I need an MRI for Achilles pain?

    Not to make the diagnosis. An MRI is not necessary to diagnose Achilles tendonitis and is mainly important for planning surgery if non-surgical treatment has not worked. Diagnosis rests on your history and an examination, with a scan supporting them.[1][2]

    Will I need surgery for Achilles tendonitis?

    Surgery is the exception. It is considered only if the pain has not improved after a sustained course of non-surgical treatment, commonly cited as 6 months, and most people improve without it.[2]

    How long does Achilles tendonitis take to settle?

    Recovery takes weeks to months and is guided by how the tendon responds to load, not a date. In a large group of runners the median was 82 days, with a range of 21 to 479 days. Results vary from person to person.[1]

    Costs and insurance

    Costs and insurance

    Practicalities

    Cost, Medisave and insurance

    Logos of Great Eastern, HSBC Life, Prudential, Singlife, Alliance Medinet and iXchange, the insurers and corporate health plan administrators on whose panels Dr Sean Leo is listed

    Ask the clinic team for current information about fees, panel status, pre-authorisation and expected payment arrangements. Insurance coverage and out-of-pocket costs depend on the individual policy and the insurer’s decision; no coverage is guaranteed.

    A cost estimate for surgery can be given only after a consultation and assessment, once a surgical plan has been developed. Each individual condition is unique — implants used, time taken, and other factors contribute to the overall estimate. The estimate will be provided to you by the clinic should you decide on surgical management, and will also be used to assist in obtaining pre-authorisation from insurance where applicable.

    Insurance panels. Dr Sean Leo, Orthopaedic Surgeon, is on the specialist panels of Great Eastern (GE Panel), HSBC Life (HSBC Life Shield) and Singlife (Singlife Shield), and on the Prudential Panel. AXA Insurance Singapore became part of HSBC Life in 2023, and former AXA Shield plans are now HSBC Life Shield plans.

    Corporate health plans. Dr Leo is on the panels of both Alliance Medinet and iXchange, which administer medical benefits for many company health plans. If your company plan uses either panel, you can see Dr Leo as a panel doctor.

    If your company uses a different panel. Some company plans still let you see a doctor of your choice outside their panel, then claim reimbursement. This varies from plan to plan, as may the co-payment, so please check your benefits with your company’s HR department.

    Panel arrangements change from time to time, so please confirm with your insurer or your company’s plan administrator before your appointment.

    Dr Leo is on the panels shown. If your insurer is not listed, you may ask whether co-management with an Orthosports surgeon partner on that panel is clinically and administratively appropriate. Orthosports surgeon partners are collectively on the panels of all Shield plans.

    Specific benefits, pre-authorisation, reimbursement and cashless treatment depend on the individual policy and insurer approval and are not guaranteed.

    Arrange a consultation: the appointment section is further down this page.

    Sources

    References

    References

    1. Martin RL, Chimenti R, Cuddeford T, Houck J, Matheson JW, McDonough CM, Paulseth S, Wukich DK, Carcia CR. Achilles Pain, Stiffness, and Muscle Power Deficits: Midportion Achilles Tendinopathy Revision 2018. J Orthop Sports Phys Ther. 2018;48(5):A1-A38. doi:10.2519/jospt.2018.0302. PMID 29712543.
    2. American Academy of Orthopaedic Surgeons (AAOS). Achilles Tendinitis. OrthoInfo. Available at: https://orthoinfo.aaos.org/en/diseases–conditions/achilles-tendinitis
    3. StatPearls [Internet]. Achilles Tendinopathy. Treasure Island (FL): StatPearls Publishing. NBK538149. Available at: https://www.ncbi.nlm.nih.gov/books/NBK538149/

    Final next step

    Final next step

    Next step

    Final next step

    Reading about a problem is a starting point. An assessment brings together the history, an examination where needed and any useful tests, and helps you and your clinician decide what to do next. How much physical examination is needed is a matter of clinical judgement. It may be limited when pain makes an examination unreliable, or when imaging clearly shows a problem that matches the symptoms, such as a fracture seen on an X-ray or an MRI scan that clearly shows an injury consistent with the symptoms. The Singapore Medical Council and the UK General Medical Council both allow remote medical consultations, where a physical examination is not possible, with safeguards: the doctor must be clear about the limits of an opinion formed without an examination, and whether an in-person examination is needed, or referral to other services, is left to the clinical judgement of the attending doctor.

    Signs that need urgent help

    Some symptoms should not wait for a routine appointment. Each item below says where to go.

    After an injury

    • The ankle or foot sits at an odd angle, a bone is showing, there is a deep cut, you are in severe pain, or the toes look blue or white or feel numb. Go to an emergency department or call 995.
    • You felt a sudden pop or sharp pain at the back of the heel or calf, and pushing off or rising onto your toes is difficult. Arrange an urgent same-day assessment.
    • It is very painful or the pain is getting worse, the swelling or bruising is large or spreading, or it hurts to put weight on the ankle or foot. Arrange an urgent same-day assessment.

    At any time

    • A joint, such as the ankle, is suddenly very painful, hot, red and swollen, especially with a fever or feeling generally unwell. Go to an emergency department or call 995.
    • One calf or thigh is newly painful and swollen. Arrange an urgent same-day assessment. If you also feel short of breath or have chest pain, go to an emergency department or call 995.

    If you have diabetes

    • You have a foot sore and a fever or feel very unwell, or the foot is cold, pale or blue. Or skin on the foot or toes has turned black, or a sore looks deep, or there is pus or redness spreading up the foot. Go to an emergency department or call 995.
    • You have a new foot sore, or a foot that is hot, swollen, changed in colour or leaking fluid, without the signs above. Arrange an urgent assessment within 24 hours.

    If you are admitted by the doctor at the urgent care centre of one of these private hospitals, the Parkway Pantai hospitals (Mount Elizabeth Orchard, Mount Elizabeth Novena, Gleneagles and Parkway East), Farrer Park Hospital and Thomson Medical Centre, you may ask for Dr Sean Leo to be your attending orthopaedic surgeon. If you are instead discharged and referred for orthopaedic follow-up, you may contact the clinic to arrange an appointment. Both are subject to the hospital’s admission processes and to Dr Leo’s availability.

    Arrange a consultation

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