Injuries Musculoskeletal
Achilles tendinopathy
Last revised in February 2026
Achilles tendinopathy is a soft tissue disorder which causes pain, stiffness, and swelling of the Achilles tendon.
Achilles tendinopathy: Summary
- Achilles tendinopathy describes a painful overuse injury, causing persistent Achilles tendon pain and loss of function related to mechanical loading.
- It may be non-insertional (affecting an area of the Achilles tendon approximately 2–6 cm above its insertion on the calcaneus; the most common site) and/or insertional (affecting the insertion of the Achilles tendon on the calcaneum).
- The exact cause of Achilles tendinopathy is not known, but it is thought that excessive, repetitive, and/or abnormal loading during physical activity disrupts tendon repair mechanisms and contributes to degenerative changes.
- The risk of developing Achilles tendinopathy is related to an interaction of factors:
- Intrinsic factors include biomechanical abnormalities, systemic conditions, and increasing age.
- Extrinsic factors include running and jumping activities (particularly increased or changed training schedules), mechanical injury, inappropriate footwear, and drugs such as fluoroquinolone antibiotics.
- Complications include Achilles tendon rupture and reduced quality of life, ability to work, exercise, and participate in sports and social activities.
- Full recovery from Achilles tendinopathy can take a year or longer, and re-injury is common.
- A diagnosis of Achilles tendinopathy should be suspected if there is:
- Gradual onset of localized pain and swelling of the posterior aspect of the heel in and around the Achilles tendon, associated with stiffness and reduced function. Symptoms are typically worse at night, at rest, or when restarting activity, and are provoked by walking, running, and jumping.
- Non-insertional Achilles tendinopathy — tenderness 2–6 cm proximal to the Achilles tendon insertion on palpation that decreases when the ankle is dorsiflexed, with possible localized thickening.
- Insertional Achilles tendinopathy — tenderness over the distal 2 cm of the Achilles tendon on palpation, with possible redness, swelling, and nodularity at the tendon insertion.
- Assessment of suspected Achilles tendinopathy includes:
- Asking about symptom location, onset, duration, severity, exacerbating and relieving factors; fitness level and changes in training or footwear; risk factors; previous tendinopathy or fracture; family history; previous or current treatment(s).
- Examination for signs of Achilles tendon rupture; assessment of gait and biomechanical abnormalities, footwear, body mass index (BMI), palpation over the Achilles tendon for signs of localized tenderness, swelling, heat, crepitus, thickening, and nodularity; range of movement of the ankle joint; function such as hopping and jumping.
- Arranging imaging and/or blood tests if there is a suspected underlying or alternative cause for symptoms.
- Management of Achilles tendinopathy includes:
- Arranging emergency admission or orthopaedic assessment if Achilles tendon rupture is suspected.
- Advising about self-care measures for symptom relief, such as cold or heat packs, short-term analgesia, and activity modification.
- Advising about sources of information and support.
- Managing any underlying causes or risk factors.
- Arranging imaging such as heel X-ray and/or ultrasound if symptoms persist for more than six weeks.
- Considering referral to physiotherapy if symptoms persist, for advice on tendon loading exercise programmes and other treatments.
- Considering referral to a sports physician or orthopaedics if there is diagnostic uncertainty, delayed response to initial treatment, or persistent symptoms after six months.
Have I got the right topic?
From age 18 years onwards.
This CKS topic covers the diagnosis and management of Achilles tendinopathy, and briefly covers the diagnosis and management of Achilles tendon rupture.
This CKS topic does not cover in detail the specialist treatment of Achilles tendinopathy or tendon rupture.
There are separate CKS topics on Analgesia - mild-to-moderate pain and Sprains and strains.
The target audience for this CKS topic is healthcare professionals working within the NHS in the UK, and providing first contact or primary healthcare.
How up-to-date is this topic?
Changes
Previous changes
June 2020 — reviewed. A literature search was conducted in March 2020 and updated in June 2020 to identify evidence-based guidelines, UK policy, systematic reviews, and key randomized controlled trials published since the last revision of the topic. No major changes to clinical recommendations have been made.
January 2016 — revised. A literature search was conducted in December 2015 to identify evidence-based guidelines, UK policy, systematic reviews, and key randomized controlled trials published since the last revision of the topic. No changes to clinical recommendations have been made.
January to April 2010 — this is a new CKS topic. The evidence base has been reviewed in detail, and recommendations are clearly justified and transparently linked to the supporting evidence.
Update
New evidence
Evidence-based guidelines
No new evidence-based guidelines since 1 November 2025.
HTAs (Health Technology Assessments)
No new HTAs since 1 November 2025.
Economic appraisals
No new economic appraisals relevant to England since 1 November 2025.
Systematic reviews and meta-analyses
Primary evidence
No new primary evidence which reaches the CKS threshold for inclusion published since 1 November 2025.
New policies
No new national policies or guidelines since 1 November 2025.
New safety alerts
No new safety alerts since 1 November 2025.
Changes in product availability
No changes in product availability since 1 November 2025.
Goals and outcome measures
Goals
To support primary healthcare professionals to:
- Make a diagnosis of Achilles tendinopathy.
- Manage people with Achilles tendinopathy in primary care.
- Refer people with Achilles tendinopathy to physiotherapy or an orthopaedics specialist, if needed.
- Recognize the potential complication of Achilles tendon rupture and arrange orthopaedics referral if suspected.
Outcome measures
No outcome measures were found during the review of this topic.Audit criteria
No audit criteria were found during the review of this topic.QOF indicators
No QOF indicators were found during the review of this topic.QIPP - Options for local implementation
No QIPP indicators were found during the review of this topic.
NICE quality standards
No NICE quality standards were found during the review of this topic.
Background information
What is it?
- Achilles tendinopathy describes a painful overuse injury affecting the Achilles tendon [Chimenti, 2024].
- The Achilles tendon is the thickest and strongest tendon in the human body, and it can be affected by degenerative and traumatic processes. It connects the gastrocnemius and soleus muscles to the calcaneus to allow ankle plantar flexion [Maffulli, 2019; Knapik, 2020]. It is the most commonly affected tendon in tendinopathy cases [Tarantino, 2023].
- The International Scientific Tendinopathy Symposium consensus statement recommends use of the term 'Achilles tendinopathy' for persistent Achilles tendon pain and loss of function related to mechanical loading, over terms such as 'tendinitis' or 'tendinosis' [Scott, 2020].
- The term 'Achilles tendinitis' is no longer used as it suggests inflammation of the tendon tissue, which may not be a feature of the tendon injury [Ackermann, 2018a; Silbernagel, 2020]. The term 'tendinosis' refers to chronic degenerative tendon disease, causing localized or diffuse tendon thickening, which may occur before Achilles tendinopathy develops [Maffulli, 2019; Silbernagel, 2020].
- Achilles tendinopathy is largely categorized as non-insertional or insertional depending on the affected anatomical site. The mid-tendon and the insertion are morphologically, functionally, and physiologically different in the 'normal state' [Maffulli 2020]. Non-insertional Achilles tendinopathy may coexist with insertional Achilles tendinopathy [Maffulli, 2019].
- Non-insertional (or mid-portion, or mid-substance) tendinopathy — affects an area of the Achilles tendon approximately 2–6 cm above its insertion on the calcaneus [Ackermann, 2018a]. This area may be vulnerable to damage because it has a relatively poor blood supply [Asplund, 2013]. Non-insertional tendinopathy is the most common site of Achilles tendinopathy, occurring in about 55–60% of cases [Maffulli, 2019].
- Insertional tendinopathy — affects the insertion of the Achilles tendon on the calcaneum, occurring in about 20–25% of cases [Maffulli, 2019].
- Proximal tendinopathy — occurs in a minority of about 15% of cases [Maffulli, 2019].
What causes it?
The exact cause of Achilles tendinopathy is not known, but it is thought that excessive, repetitive, and/or abnormal loading during physical activity disrupts tendon repair mechanisms and contributes to degenerative changes [Knapik, 2020] [Silbernagel, 2020] [Matsui, 2025].
- The pathophysiology of Achilles tendinopathy may be considered a continuum of changes affecting tenocytes, proteins, and collagen organization, with inflammation present in the early stages in some people [Knapik, 2020]. It is likely to involve a complex interplay of mechanical stress, vascular impairment, inflammatory responses, and extracellular matrix dysregulation involving remodelling and 'fibrocartilagenous adaptation' [Matsui, 2025].
- Expert opinion in a review article states that 'tendinopathy can be seen as a failure in the adaptation of the cell matrix to different stresses because of an imbalance between matrix degradation and synthesis'. Histological changes include intratendinous collagen fibre degeneration, with altered orientation and a reduction in fibre thickness [Tarantino, 2023]. Similarly, expert opinion in another review article states that Achilles tendinopathy is caused by a 'failed healing response with haphazard proliferation of tenocytes, abnormalities in tenocytes with disruption of collagen fibres, and subsequent increase in non-collagenous matrix' [Maffulli, 2020].
What are the risk factors?
The risk of developing Achilles tendinopathy is likely to be multifactorial and related to an interaction of intrinsic and extrinsic factors that lead to decreased tendon load tolerance, or movements that lead to tendon overloading [Maffulli, 2020] [Silbernagel, 2020] [Chimenti, 2024]. Risk factors include:
- Intrinsic factors
- Biomechanical — such as leg length discrepancy, decreased plantar flexor strength, deficits in hip neuromuscular control, abnormal ankle dorsiflexion and limited mobility of the subtalar joint, pes cavus, forefoot varus, increased foot pronation, and increased body mass index (BMI) and obesity [Ackermann, 2018b; Maffulli, 2020; Silbernagel, 2020; Tarantino, 2023].
- Systemic — such as diabetes mellitus, hypercholesterolaemia, hyperuricaemia, and inflammatory arthropathies such as rheumatoid arthritis and psoriatic arthropathy [Ackermann, 2018b; Maffulli, 2020; Tarantino, 2023].
- Increasing age — increased risk of tendon degeneration and impaired healing as the tendon ages in insertional Achilles tendinopathy [Maffulli, 2019; Maffulli, 2020; Chimenti, 2024].
- Extrinsic factors
- Athletes, running and jumping sports — increased interval training, abrupt changes in training schedule, excessive hill training, training on hard or sloping surfaces, increased training distances, increased repetitive loading, poor shock absorption [Maffulli, 2019; Ackermann, 2018b; Silbernagel, 2020; Chimenti, 2024].
- Mechanical injury — for example, previous lower limb tendinopathy or fracture [Maffulli, 2019; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022; Tarantino, 2023].
- Footwear — inappropriate footwear causing compressive forces on the Achilles tendon and calcaneus [Maffulli, 2019; Silbernagel, 2020; Chimenti, 2024].
- Drugs — such as systemic corticosteroids, statins, aromatase inhibitors, and fluoroquinolone antibiotics may reduce collagen and matrix synthesis [Ackermann, 2018b; Silbernagel, 2020; Malliaras, 2022; Tarantino, 2023; MHRA, 2024].
How common is it?
The reported prevalence and incidence rate of Achilles tendinopathy vary in different studies.
- Expert opinion in a review article cites evidence that 6–10% of runners are affected by Achilles tendinopathy at any one time. It states the lifetime prevalence is 52% for middle- and long-distance runners, 36% for short-distance runners, 24% for athletes in general, and 6% for the general population [Malliaras, 2022].
- A large US database study (analysis of 20 million primary and secondary care records) of people aged 20–69 years found [Yasui, 2017]:
- A total of 898 per 100,000 people were diagnosed with Achilles tendinopathy, and men and women were equally affected.
- The peak age for incidence was in the 40–59 years age-group.
- An international systematic review and meta-analysis of 16 observational studies (n = 14,858 participants) assessing the prevalence of Achilles tendinopathy with different forms of exercise found [Wang, 2022]:
- The overall pooled prevalence of Achilles tendinopathy was 6%, and the prevalence of Achilles tendon rupture was 3%.
- The prevalence increased with age, with the highest prevalence seen in people aged over 45 years and in athletes.
- There was no difference in prevalence rates between men and women in the population sample.
- A Dutch cross-sectional cohort study in primary care (n = 57,725 patients) found [de Jonge, 2011]:
- The incidence rate of non-insertional Achilles tendinopathy was 1.85 per 1000 patients. In adults aged 21–60 years, the incidence rate was 2.35 per 1000 patients.
- In 35% of cases, a relationship to sporting activity was recorded.
- Another Dutch cross-sectional study in a general practice population (n = 10,651 person-years) found an Achilles tendinopathy prevalence rate of 2.35 and an incidence rate of 2.16 per 1000 person-years [Albers, 2016].
What are the complications?
- Possible complications of Achilles tendinopathy include:
- Reduced quality of life — a negative impact on the person’s quality of life and daily functioning, including work, exercise and sporting performance, and social activities [Silbernagel, 2020; Malliaras, 2022].
- Psychosocial impact — including possible anxiety and depression, and fear of pain with movement [Silbernagel, 2020; Malliaras, 2022].
- Partial tear or complete Achilles tendon rupture — may present with sudden severe pain in the calf, an audible snap, and difficulty with weight-bearing. Most cases are traumatic sports injuries occurring during sprinting or an explosive jumping activity [Asplund, 2013; Boyd, 2015; Malliaras, 2022; Chimenti, 2024]. If suspected, see the section on Management for more information on immediate management.
- The majority of people with complete tendon rupture do not report previous Achilles symptoms [Boyd, 2015].
- On examination, Achilles tendon rupture may lead to greater dorsiflexion of the injured ankle and foot compared with the uninjured limb. A defect in the tendon may be palpable within the first few hours after rupture, but is not always present due to localized swelling [Asplund, 2013; Boyd, 2015]. There may be bruising and swelling of the calf, but this is not always present. The ankle will typically remain in the neutral position when the calf is squeezed [Boyd, 2015].
What is the prognosis?
The prognosis of Achilles tendinopathy relates to the severity of injury and intrinsic factors that may affect tendon healing and recovery [Chimenti, 2024].
- The American Physical Therapy Association (APTA) clinical practice guidelines cite evidence that people with acute non-insertional Achilles tendinopathy for less than 3 months' duration had a similar level of improvement in symptoms, function, tendon structure, and psychological factors as people with chronic non-insertional Achilles tendinopathy of more than 3 months' duration. They note that most cases of Achilles tendinopathy are self-limiting and will improve over time, but the time to and extent of recovery varies between people [Chimenti, 2024].
- Expert opinion in a review article notes that full recovery from Achilles tendinopathy can take a year or longer, and re-injury is common, particularly if a person returns to sporting activities too soon. It cites evidence from different studies of high re-injury rates (27–44%) for Achilles tendinopathy in amateur and elite athletes [Silbernagel, 2020].
- Similarly, expert opinion in another review article cites evidence from studies that exercise interventions over 12 weeks can provide a clinically significant improvement in symptoms and function, and further improvements are likely between 12 and 52 weeks. It cites additional evidence from cohort studies that mild symptoms may persist among 60% and 25% of people with non-insertional Achilles tendinopathy at 5 and 10 years, respectively [Malliaras, 2022].
- A prospective, observational study of people with conservatively managed Achilles tendinopathy followed up for 8 years after initial assessment (n = 83) found [Paavola, 2000]:
- 84% of people had completely returned to their normal activity level, and 94% were asymptomatic or had only mild pain with strenuous exercise.
- 41% developed 'overuse symptoms' affecting the contralateral Achilles tendon.
- 29% of people needed surgical intervention during the follow-up period.
Diagnosis of Achilles tendinopathy
When should I suspect Achilles tendinopathy?
Suspect a diagnosis of Achilles tendinopathy if there are suggestive clinical features, such as:
- Typical symptoms:
- Gradual onset of localized pain and swelling of the posterior aspect of the heel in and around the Achilles tendon, associated with stiffness and reduced function.
- Symptoms are typically worse at night, at rest, or when restarting activity.
- Symptoms are provoked by tendon-loading activities and movement such as walking, running, and jumping.
- There may be associated risk factors.
- Gradual onset of localized pain and swelling of the posterior aspect of the heel in and around the Achilles tendon, associated with stiffness and reduced function.
- Typical findings on examination:
- Tenderness 2–6 cm proximal to the Achilles tendon insertion on palpation that decreases when the ankle is dorsiflexed, and possible localized thickening on palpation, suggests non-insertional Achilles tendinopathy.
- Tenderness over the distal 2 cm of the Achilles tendon on palpation suggests insertional Achilles tendinopathy. There may also be redness, swelling, and nodularity at the tendon insertion.
- There may be signs at both the insertion and mid-portion of the Achilles tendon in some people. 30% of people may have bilateral ankle involvement.
Basis for recommendation
These recommendations are based on the American Physical Therapy Association (APTA) clinical practice guidelines Achilles pain, stiffness, and muscle power deficits: Mid-portion Achilles tendinopathy revision - 2024 [Chimenti, 2024] and expert opinion in review articles on Achilles tendinopathy [Maffulli, 2019; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022; Tarantino, 2023].
- Expert opinion in a review article notes that 'walking, running and jumping are implicated because they involve a rapid stretch-shorten cycle of the muscle tendon unit and repetitive high Achilles tendon force and strain'. A sudden change in stretch-shorten cycle activities (such as a rapid increase in weekly running distance or introduction of hill running or higher intensity exercise sessions) that exceeds physiological adaptive capacity is often a trigger [Malliaras, 2022].
How should I assess suspected Achilles tendinopathy?
Achilles tendinopathy is usually a clinical diagnosis based on history and examination findings. If a diagnosis of Achilles tendinopathy is suspected:
- Ask about red flag symptoms suggesting a serious or alternative cause for symptoms, such as inflammatory arthropathy or Achilles tendon rupture, and manage appropriately. See the section on Management for more information on immediate management of Achilles tendon rupture.
- Ask about:
- Typical symptoms of gradual onset of localized pain and swelling of the posterior aspect of the heel in and around the Achilles tendon, associated with stiffness and reduced function.
- Symptoms are typically worse at night, at rest, or when restarting activity after a period of rest.
- Symptoms are provoked by tendon-loading activities and movement such as walking, running, and jumping. They may initially improve after a few minutes of activity, but may progress to affect all activity.
- 30% of people may have bilateral ankle involvement.
- Symptom severity and the impact on function, including walking, running, work, leisure and sporting activities, and psychological wellbeing.
- The person's fitness level and any change or increase in training schedule (intensity, duration, and/or environment).
- Any recent change in footwear.
- Any associated risk factors, including comorbidities or medications such as fluoroquinolone antibiotics.
- Any history of previous lower limb tendinopathy or fracture.
- Any family history of tendinopathy.
- Any previous or current treatments, including medication, physiotherapy, and/or surgery.
- Typical symptoms of gradual onset of localized pain and swelling of the posterior aspect of the heel in and around the Achilles tendon, associated with stiffness and reduced function.
- Examine both legs exposed from above the knees, while the person is standing and prone, to assess for:
- Any signs of Achilles tendon rupture, and manage appropriately. See the section on Management for more information.
- Height, weight, and body mass index (BMI).
- Gait and biomechanical abnormalities (such as leg deformity, leg length discrepancy, leg malalignment, pes cavus, asymmetry in tendon size, varus deformity of the forefoot, and limited mobility of the subtalar joint).
- Signs of wear on footwear.
- Palpate along the length of the Achilles tendon with the ankle in neutral position for typical signs of localized tenderness, swelling, heat, crepitus, thickening, and nodularity. Assess the range of movement (passive and active) of the ankle joint and strength testing to plantar flexion, dorsiflexion, eversion, and inversion, and subtalar mobility, for signs of restricted ankle dorsiflexion or muscle weakness of the gastrocnemius-soleus complex.
- Tenderness 2–6 cm proximal to the Achilles tendon insertion on palpation, which moves with the tendon and which decreases or is reduced when the ankle is actively dorsiflexed, with possible localized thickening on palpation, suggests non-insertional Achilles tendinopathy.
- Tenderness over the distal 2 cm of the Achilles tendon on palpation suggests insertional Achilles tendinopathy. There may also be redness, swelling, and nodularity at the tendon insertion.
- There may be signs of both insertional and non-insertional Achilles tendinopathy, and 30% of people may have bilateral ankle involvement.
- Assess function by asking the person to perform loading tests such as hopping, jumping, calf raise, and heel raise.
- Imaging with ultrasound or MRI is not routinely needed to diagnose Achilles tendinopathy in primary care. Consider arranging a heel X-ray and/or ultrasound scan if clinical features are atypical or there is a suspected alternative diagnosis, depending on clinical judgement.
- X-ray may show intratendinous calcification and ossification. The presence of posterior calcification of the calcaneus ('posterior heel spur') is diagnostic of insertional Achilles tendinopathy.
- Ultrasound scan can assess tendon length, thickness, and cross-sectional area, and identify signs of intratendinous calcification, bursitis, and bony deformity.
- Consider arranging additional investigations (such as blood lipid profile, HbA1c, or urate level) if an underlying cause is suspected, depending on clinical judgement.
Basis for recommendation
Clinical features on history-taking
- The recommendation to assess for and manage a potentially serious underlying cause such as inflammatory arthropathy is based on expert opinion in review articles [Silbernagel, 2020; Malliaras, 2022; Chimenti, 2024].
- The recommendation to assess for Achilles tendon rupture is based on expert opinion in a review article, which notes that Achilles tendon rupture is missed by non-specialists in about 20% of cases. It highlights that prompt diagnosis is important, as delay in treatment can lead to poorer outcomes, including disability, more complicated surgery, and inability to return to usual sporting activity [Singh, 2017]. It is also pragmatic, based on what CKS considers to be good clinical practice.
- The information about the typical symptoms suggesting Achilles tendinopathy is based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in review articles [Maffulli, 2019; Knapik, 2020; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022; Tarantino, 2023; Chimenti, 2024]. Of note, expert opinion in a review article states that pain is often a late presenting symptom of Achilles tendinopathy [Maffulli, 2020]. Subclinical microtrauma may occur and develop before a person presents with symptomatic pain which may be a late presenting symptom [Tarantino, 2023].
- The information that 30% of people may have bilateral ankle involvement is based on expert opinion in a review article [Silbernagel, 2020].
- The recommendation to assess symptom severity and impact on function is based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in review articles [Maffulli, 2019; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022]. Expert opinion in a review article notes that over 50% of tendon injuries happen during sporting activity [Tarantino, 2023].
- The recommendation to assess the person's fitness level and training schedule is based on expert opinion in a review article [Silbernagel, 2020].
- The recommendation to assess footwear is based on expert opinion in a review article [Ackermann, 2018b].
- The recommendation to assess for risk factors is largely based on the APTA clinical practice guidelines, which note that the body’s tendon response to loading is influenced by prior injuries, comorbidities, drug use, and genetic factors [Chimenti, 2024]. It is supported by expert opinion in a review article [Asplund, 2013].
- The recommendation to ask about previous lower limb tendinopathy or fracture is based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in review articles [Asplund, 2013; Malliaras, 2022].
- The recommendation to ask about any family history of tendinopathy is based on expert opinion in a review article [Silbernagel, 2020]. In addition, genetic factors may play a role in tendon strength and capacity to recover after an injury [Tarantino, 2023].
- The recommendation to ask about previous treatment(s) is extrapolated from expert opinion in review articles [Asplund, 2013; Maffulli, 2019].
Clinical features on examination
- The recommendation to check body mass index (BMI) is extrapolated from the APTA clinical practice guidelines, which note that BMI may be a risk factor for the development of Achilles tendinopathy, and raised BMI may affect prognosis [Chimenti, 2024].
- The recommendation to assess for gait and biomechanical abnormalities is based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in review articles [Ackermann, 2018b; Tarantino, 2023].
- The recommendation to check footwear is extrapolated from expert opinion in a review article [Ackermann, 2018b].
- The information about typical examination findings in Achilles tendinopathy is based on the APTA clinical practice guidelines, which note that localized thickening on palpation of the mid-portion of the Achilles tendon may help to rule in a diagnosis of mid-portion Achilles tendinopathy, but is absent in about 25% of case [Chimenti, 2024]. It is also based on expert opinion in review articles [Maffulli, 2019; Maffulli, 2020; Silbernagel, 2020; Tarantino, 2023].
- The information about loading tests to assess function are primarily based on the APTA clinical practice guidelines [Chimenti, 2024]. Expert opinion in a review article notes that loading tests such as calf raise or hopping tests can be negative in some people without severe symptoms [Malliaras, 2022].
Considering investigations in primary care
- The information that imaging tests are not routinely needed to diagnose Achilles tendinopathy and should only be considered if there are atypical features or a suspected differential diagnosis is based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in review articles [Maffulli, 2020; Malliaras, 2022]. It is also pragmatic, based on what CKS considers to be good clinical practice.
- Expert opinion in a review article highlights that imaging is not needed to confirm a diagnosis of Achilles tendinopathy in most people, and notes that imaging may be abnormal in asymptomatic people potentially leading to unnecessary management and intervention, partly due to a person's age, physical activity level, and BMI. Imaging may be helpful if there is non-response to initial treatment, and/or to confirm suspected differential diagnoses [Malliaras, 2022].
- The information about possible X-ray findings is based on the APTA clinical practice guidelines, which state that bone-related pathology such as calcaneal fracture, os trigonum, enthesophytes, and Haglund's deformity may be identified [Chimenti, 2024]. It is also extrapolated from the International Scientific Tendinopathy Symposium consensus statement [Scott, 2020] and expert opinion in a review article, which notes that X-ray findings are unlikely to change the initial management plan for suspected Achilles tendinopathy [Maffulli, 2020].
- The information about possible ultrasound findings is based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in a review article [Silbernagel, 2020].
- The recommendation to consider arranging additional investigations such as blood tests is extrapolated from expert opinion in a review article [Malliaras, 2022]. It is also pragmatic, based on what CKS considers to be good clinical practice.
Differential diagnosis
True tendon pain (from rupture or tendinopathy) is usually confined to the tendon itself. Other conditions which may cause pain in and around the Achilles tendon and posterior ankle include:
- Partial tears and Achilles tendon rupture — there is an increased risk if a person has asymptomatic rather than painful Achilles tendinopathy. It does not always result in a complication of Achilles tendinopathy. See the section on Complications for more information.
- Peritendonitis or paratenonitis of the Achilles tendon — due to inflammation of the connective tissue sheath surrounding the tendon, causing diffuse pain over the Achilles tendon or posterior heel region. On examination, the swelling and tenderness over the Achilles tendon do not move when the ankle is dorsiflexed. There may be crepitus with active movement. May co-exist with non-insertional Achilles tendinopathy.
- Retrocalcaneal bursitis — causes pain and erythema over the posterior heel region. There may be fluctuation on examination, suggesting an effusion of the retrocalcaneal bursa. May co-exist with insertional Achilles tendinopathy.
- Achilles tendon calcification — may cause heel pain and difficulty with weight-bearing, with areas of calcification seen within the Achilles tendon on X-ray.
- Osteomyelitis of the tibia and calcaneus — may cause systemic symptoms with heel pain and difficulty bearing weight.
- Neoplasms of the tibia and calcaneus — may cause fever, night pain, and difficulty with weight-bearing. See the CKS topic on Bone and soft tissue sarcoma - recognition and referral for more information on bone and soft tissue malignancy.
- Flexor hallucis longus tendinopathy — may cause pain on toe-off or forefoot weight-bearing, particularly around the posteromedial aspect of the calcaneus. On examination, there may be pain aggravated by resisted flexion of the great toe or stretch into full dorsiflexion of the hallux.
- Posterior tibialis tendinopathy — causes medial ankle pain behind the medial malleolus and extending towards the insertion of the tendon, with tenderness along the posterior tibialis tendon.
- Peroneal tendinopathy — causes lateral ankle or heel pain and swelling, which is aggravated by activity, with local tenderness over the peroneal tendons.
- Os trigonum syndrome — causes pain with mild swelling posterior to the ankle. Pain is worsened by resisted plantar flexion and dorsiflexion of the great toe.
- Retrocalcaneal exostosis — an intratendinous exostosis which may be associated with insertional tendinopathy.
- Tibial, talar, or calcaneal fracture.
- Haglund's deformity — a calcaneal prominence of the posterior or posterolateral aspect of the calcaneus. May co-exist with insertional Achilles tendinopathy.
- Posterior ankle impingement — causes pain in the posterior ankle, which increases with passive plantar flexion of the ankle.
- Sural nerve impingement or entrapment — may cause pain in the posterior distal leg. May co-exist with Achilles tendinopathy.
- Plantaris tendinopathy. May co-exist with Achilles tendinopathy.
- Dislocation of the peroneal or other plantar flexor tendons.
- Fascia cruris tears.
- Fat pad irritation.
- Lumbar radiculopathy. See the CKS topic on Sciatica (lumbar radiculopathy) for more information.
- Systemic inflammatory arthropathy — may present with sudden, severe bilateral symptoms with no significant change in activity levels, and/or no or limited response to exercise intervention. See the CKS topics on Rheumatoid arthritis and Spondyloarthritis and psoriatic arthropathy for more information.
Basis for recommendation
The information on the differential diagnosis of Achilles tendinopathy is based on the American Physical Therapy Association (APTA) clinical practice guidelines Achilles pain, stiffness, and muscle power deficits: Mid-portion Achilles tendinopathy revision - 2024 [Chimenti, 2024] and expert opinion in review articles on Achilles tendinopathy [Asplund, 2013; Maffulli, 2019; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022].
Management
Scenario: Management
From age 18 years onwards.
How should I manage a person with Achilles tendinopathy?
If a diagnosis of Achilles tendon rupture is suspected, arrange admission or same-day referral to orthopaedics, depending on local referral pathways. If a diagnosis of Achilles tendon rupture is not suspected:
- Advise about self-care measures for symptom relief:
- Consider applying cold or heat packs after an acute injury. See the CKS topic on Sprains and strains for more information.
- Advise on the use of analgesia such as paracetamol and/or short-term nonsteroidal anti-inflammatory drugs (NSAIDs), depending on the risk of adverse effects and contraindications. See the CKS topics on Analgesia - mild-to-moderate pain and NSAIDs - prescribing issues for more information.
- Advise about activity modification, to avoid complete rest and continue activities if pain is tolerated, and to restart exercise when pain is controlled.
- Educate about the early recognition of future symptoms and to adjust tendon load and activity early, in order to reduce the risk of re-injury and reduce recovery time.
- Advise about sources of information and support, such as:
- The patient.info (website www.patient.info) leaflet Achilles tendinopathy.
- The British Foot and Ankle Society (website www.bofas.org.uk) patient information A guide to Achilles tendon pain.
- The NHS web information (website www.nhs.uk) Tendonitis.
- Assess for and manage any potentially modifiable underlying causes or risk factors to reduce the risk of re-injury, such as:
- Weight management to maintain a healthy body mass index (BMI). See the CKS topic on Obesity for more information.
- Footwear advice.
- Stopping any potentially causative medications such as fluoroquinolone antibiotics immediately. Seek specialist advice if needed.
- Manage any potentially causative medical conditions, depending on clinical judgement.
- Consider referral to physiotherapy if there is no improvement in symptoms with self-care measures in 7–10 days, depending on clinical judgement.
- Consider arranging a heel X-ray and/or ultrasound scan if symptoms persist for more than six weeks to assess for coexisting or alternative conditions. See the section on Assessment for more information.
- The physiotherapy team may advise about progressive tendon loading exercises, stretches, and offer additional treatments. See the section on Specialist treatments for more information.
- Consider use of heel lifts to reduce load and ankle dorsiflexion during activity for non-insertional Achilles tendinopathy.
- Do not recommend the use of injectable corticosteroids into or around the tendon.
- Consider referral to a sports physician or orthopaedics for specialist assessment and treatment if:
- There is diagnostic uncertainty.
- There is a delayed response to initial treatment.
- There are worsening or ongoing symptoms after six months which have not responded to conservative measures.
Specialist management
Specialist management, which may be offered for management of Achilles tendinopathy, includes:
- Non-surgical interventions
- Progressive tendon loading exercise programme 2–3 times a week increases exercise intensity based on the person's pain tolerance and functional capacity (for non-insertional Achilles tendinopathy) [Silbernagel, 2020; Chimenti, 2024].
- Stretches of the ankle plantar flexors, particularly if there is a limited range of movement of ankle dorsiflexion [Tarantino, 2023; Chimenti, 2024],
- Extracorporeal shock-wave therapy (ESWT) may stimulate the tissue healing response and provide an analgesic effect [Maffulli, 2019; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022; Tarantino, 2023].
- Surgical interventions
- Pre-operative imaging may include MRI if there is a non-response to conservative treatment, to assess tendon structure, and coexisting or alternative conditions [Asplund, 2013; Maffulli, 2019; Maffulli, 2020; Malliaras, 2022; Tarantino, 2023; Chimenti, 2024].
- Surgery may be indicated for persistent symptomatic Achilles tendinopathy after at least six months of conservative treatment. Surgery may include debridement of peritendinous bony and soft tissue structures [Maffulli, 2019]. It may be needed for the management of insertional bony spurs and Haglund's deformity [Matsui, 2025].
- Procedures range from percutaneous tenotomy; to minimally invasive stripping of the tendon; and to open surgery tendon debridement and possible tendon transfer if there is severe, extensive degeneration of the tendon [Maffulli, 2019; Maffulli, 2020].
Basis for recommendation
The recommendations on management of Achilles tendinopathy are based on the American Physical Therapy Association (APTA) clinical practice guidelines Achilles pain, stiffness, and muscle power deficits: Mid-portion Achilles tendinopathy revision - 2024 [Chimenti, 2024], a meta-analysis of treatments for Achilles tendinopathy [van der Vlist, 2021], the Medicines and Healthcare products Regulatory Agency (MHRA) drug safety update Fluoroquinolone antibiotics: must now only be prescribed when other commonly recommended antibiotics are inappropriate [MHRA, 2024], and expert opinion in review articles on Achilles tendinopathy [Asplund, 2013; Ackermann, 2018b; Maffulli, 2019; Knapik, 2020; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022; Tarantino, 2023; Matsui, 2025] and on Achilles tendon rupture [Boyd, 2015].
Advising about self-care measures
- The recommendation about applying cold or heat is based mainly on anecdotal evidence cited in expert opinion in review articles Maffulli, 2019 ; Maffulli, 2020; Malliaras, 2022 ; [Maffulli, 2019; Maffulli, 2020; Malliaras, 2022; Tarantino, 2023].
- Expert opinion in a review article notes a lack of good evidence on the optimal management technique(s) for Achilles tendinopathy. It does, however, state that heat packs provide the 'potential to stimulate repair processes, increase drug activity, allow more efficient relief from pain, increase tendon extensibility and reduce muscle and joint stiffness' [Maffulli, 2020].
- Application of ice may reduce swelling and pain following acute injury [Maffulli, 2019].
- The recommendation to consider use of paracetamol for symptom relief is based on expert opinion in a review article [Asplund, 2013]. The recommendation to consider the use of nonsteroidal anti-inflammatory drugs (NSAIDs) is based on expert opinion in review articles Maffulli, 2020 ; Malliaras, 2022 ; [Maffulli, 2020; Malliaras, 2022; Tarantino, 2023].
- Expert opinion in a review article cites limited evidence for NSAIDs from studies suggesting a 'modest effect' on acute symptoms of Achilles tendinopathy in the short term [Maffulli, 2020].
- Expert opinion in another review article describes a modest impact of NSAIDs on acute symptoms in the short-term only. NSAIDs may allow a person to perform exercise rehabilitation and stretches of the gastrocnemius and soleus muscles. It does, however, highlight that use of analgesia such as NSAIDs may result in a person ignoring early symptoms, increasing the risk of further damage to the affected tendon, and delaying tendon healing [Tarantino, 2023].
- The recommendation about activity modification is based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in review articles [Asplund, 2013; Maffulli, 2019; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022].
- Complete rest is not recommended for non-acute non-insertional Achilles tendinopathy. Continue with activities within acceptable pain limits as tolerated [Malliaras, 2022; Chimenti, 2024]. Similarly, expert opinion in an additional review article recommends that complete rest from all activities during the early phases of treatment may not be necessary if activities are modified based on symptoms. It cites evidence that complete rest may prolong recovery times [Silbernagel, 2020].
- Expert opinion in a review article recommends use of activity modification for an initial 2–6 weeks following acute symptoms [Malliaras, 2022]. CKS notes that clinical judgement is needed when advising on the optimal time frame for individual patients.
- The information about early recognition of future symptoms is based on expert opinion in a review article [Silbernagel, 2020].
Advising about sources of information and support
- This recommendation is based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in review articles [Ackermann, 2018b; Silbernagel, 2020; Malliaras, 2022].
- The APTA clinical practice guidelines provide some evidence that patient education and knowledge can improve self-management skills, provide pain relief, and increase functional capacity. It highlights the importance of patient education as a key component of rehabilitation for Achilles tendinopathy, but acknowledges there is a lack of evidence on the optimal content and duration of education.
- Similarly, expert opinion in a review article notes that patient education is important for motivation and engagement with management programmes and positive patient outcomes [Silbernagel, 2020].
- Expert opinion in an additional review article recommends shared decision-making and empowering the person to self-manage through activity and load modification and exercise strategies [Malliaras, 2022]. Furthermore, education may provide preventative strategies to reduce the risk of re-injury [Ackermann, 2018b].
Managing underlying causes and risk factors
- These recommendations are based on the APTA clinical practice guidelines [Chimenti, 2024], the MHRA drug safety update on fluoroquinolones [MHRA, 2024], and expert opinion in review articles [Ackermann, 2018b; Silbernagel, 2020; Malliaras, 2022]. They are also pragmatic, based on what CKS considers to be good clinical practice.
- The MHRA drug safety update reiterates advice that fluoroquinolone antibiotics must be stopped 'at the first signs of a severe adverse reaction, such as tendinitis or tendon rupture, muscle pain, muscle weakness, joint pain, joint swelling, peripheral neuropathy and central nervous system effects'. In addition, co-administration of quinolone antibiotics with corticosteroids should be avoided, as this 'could exacerbate fluoroquinolone-induced tendinitis and tendon rupture'.
Considering referral to physiotherapy
- These recommendations are based on the APTA clinical practice guidelines [Chimenti, 2024], a meta-analysis of Achilles tendinopathy treatments [van der Vlist, 2021], and expert opinion in review articles [Asplund, 2013; Maffulli, 2019; Knapik, 2020; Maffulli, 2020; Silbernagel, 2020; Malliaras, 2022; Tarantino, 2023].
- The recommendation to consider physiotherapy referral if there is no improvement in symptoms in 7–10 days is based on expert opinion in a review article [Asplund, 2013]. CKS notes that clinical judgement is needed when deciding on the optimal time frame for referral in individual patients.
- The APTA clinical practice guidelines state that ultrasound or MRI may be helpful to assess for differential diagnoses or coexisting conditions in people with atypical clinical features or persisting pain not responding to conservative measures [Chimenti, 2024]. Expert opinion in a review article recommends arranging a heel X-ray if symptoms last longer than six weeks to rule out bony abnormalities. MRI may be needed to assess the morphology of the tendon, surrounding bone, and soft tissues including bursae, and it allows differentiation between paratendinopathy and tendinopathy of the main body of the tendon [Maffulli, 2020]. An additional review article notes that imaging may be helpful if there is non-response to initial treatment, and/or to confirm suspected differential diagnoses [Malliaras, 2022]. Of note, expert opinion in a review cautions that imaging abnormalities may not correlate with clinical signs of Achilles tendinopathy, as up to 35% of asymptomatic people have signs of Achilles tendinopathy on imaging, and 19% of symptomatic people will have normal imaging [Maffulli, 2019].
- The information about progressive tendon loading exercises is based on a meta-analysis of 29 randomized controlled trials (RCTs) which found no clinically relevant differences in outcomes between different active treatments at 3- and 12-month follow-up, and recommended use of a calf muscle exercise programme due to its low cost and low risk of harm [van der Vlist, 2021].
- The APTA clinical practice guidelines recommend tendon loading exercise at least three times a week, with loads as high as tolerated, as a first-line treatment to improve function and decrease pain for people with non-insertional Achilles tendinopathy. They postulate that exercise is likely to improve tendon structure, motor function, and provide psychological benefit. An evidence review found that exercise appears to be better than a wait-and-see approach or the use of passive treatments alone [Chimenti, 2024].
- Similarly, expert opinion in a review article states that a progressive tendon loading exercise programme at least twice a week promotes recovery of tendon health, tendon remodelling, improves calf muscle endurance, strength and lower leg function, and reduces the risk of re-injury. Overall, it reports there is strongest evidence for exercise rehabilitation in the management of Achilles tendinopathy to provide symptom relief and improve function [Silbernagel, 2020]. Similarly, expert opinion in another review article states that 'eccentric exercises were shown to promote collagen fibres cross-link formation within the tendon, thereby facilitating tendon remodelling'. It reports that eccentric exercises are the most effective conservative treatment for non-insertional Achilles tendinopathy, ideally performed twice a day for 12 weeks [Tarantino, 2023].
- The information about lower leg stretches is based on very little evidence in the literature [Knapik, 2020; Tarantino, 2023].
- The APTA clinical practice guidelines found no evidence to support the use of foot orthoses, but state that heel lifts may be used to temporarily reduce ankle dorsiflexion during activity for people with non-insertional Achilles tendinopathy [Chimenti, 2024]. Expert opinion in a review article, however, notes minimal evidence supporting the use of heel lifts or heel wedges to provide transient pain relief [Maffulli, 2019]. CKS notes that expert opinion in additional review articles state that orthotics are theorised to correct excessive foot pronation and reduce strain on the Achilles tendon, but there is little or no evidence in the literature that their use reduces pain [Knapik, 2020; Silbernagel, 2020; Tarantino, 2023].
- The APTA clinical practice guidelines state that rigid taping may be used to decrease strain on the Achilles tendon and/or alter foot posture in people with non-insertional Achilles tendinopathy, based on limited evidence extrapolated from the use of taping in other regions of the body [Chimenti, 2024]. Expert opinion in a review article states, however, that there is limited evidence that it is effective in reducing Achilles tendon pain [Silbernagel, 2020].
- The APTA clinical practice guidelines also state that intramuscular dry needling may be used in some people to release a muscle trigger point and treat calf-related muscle pain and stiffness, particularly in people with more acute symptoms, myofascial trigger points in the calf, and/or in people who do not tolerate a progressive loading programme [Chimenti, 2024].
- Expert opinion in a review article states there is some evidence in the literature supporting the use of extracorporeal shock-wave therapy (ESWT). It is proposed to stimulate and promote tendon healing and inhibit pain receptors [Maffulli, 2020]. Expert opinion in another review article states that ESWT may be effective in the short-term, but notes that patient outcomes vary [Silbernagel, 2020]. Expert opinion in an additional review article notes a lack of consensus in the literature regarding the optimal ESWT application method, generation, energy level, number, and treatment frequency [Tarantino, 2023].
- The recommendation not to use injectable corticosteroid treatments is based on expert opinion in review articles, which note the lack of evidence of benefit and the increased risk of complete or partial tendon rupture [Ackermann, 2018b; Silbernagel, 2020].
Considering referral to a sports physician or orthopaedics
- These recommendations are based on the APTA clinical practice guidelines [Chimenti, 2024] and expert opinion in review articles [Asplund, 2013; Maffulli, 2020; Tarantino, 2023]. They are also pragmatic, based on what CKS considers to be good clinical practice.
- Expert opinion in a review article recommends conservative management for 3–6 months, as 75% of cases of Achilles tendinopathy resolve within this time frame [Maffulli, 2020].
Supporting evidence
This CKS topic is largely based on the American Physical Therapy Association (APTA) clinical practice guidelines Achilles pain, stiffness, and muscle power deficits: Mid-portion Achilles tendinopathy revision - 2024 [Chimenti, 2024] and expert opinion in review articles. The rationale for the individual recommendations is discussed in the relevant basis for recommendation sections.
How this topic was developed
This section briefly describes the processes used in developing and updating this topic. Further details on the full process can be found in the About Us section and on the Clarity Informatics website.
Search strategy
Scope of search
A literature search was conducted for guidelines and systematic reviews on primary care management of achilles tendinopathy.
Search dates
June 2020 - November 2025
Key search terms
The terms listed below are the core search terms that were used for EBSCOhost MEDLINE (searched 22nd June 2020). These were combined with filters to identify guidelines, systematic reviews and primary care relevant literature in EBSCOhost MEDLINE. The strategy was adapted for The Cochrane Library databases.
S6 S3 OR S4 OR S5
S5 AB ( achille* N3 (tendinopath* or tendinitis or tendonitis or tendinosis or rupture* or injur* or tear*) ) OR TI ( achille* N3 (tendinopath* or tendinitis or tendonitis or tendinosis or rupture* or injur* or tear*) )
S4 (MH "Achilles Tendon/IN")
S3 S1 AND S2
S2 (MH "Tendinopathy+")
S1 (MH "Achilles Tendon")
Sources of guidelines
- National Institute for Health and Care Excellence (NICE)
- Scottish Intercollegiate Guidelines Network (SIGN)
- Royal College of Physicians
- Royal College of General Practitioners
- Royal College of Nursing
- NICE Evidence
- World Health Organization
- Guidelines International Network
- TRIP database
- Agency for Healthcare Research and Quality
- National Health and Medical Research Council (Australia)
- Royal Australian College of General Practitioners
- British Columbia Medical Association
- Canadian Medical Association
- Alberta Medical Association
- Michigan Quality Improvement Consortium
- Singapore Ministry of Health
- National Resource for Infection Control
- RefHELP NHS Lothian Referral Guidelines
- Medline (with guideline filter)
- Driver and Vehicle Licensing Agency
- NHS Health at Work (occupational health practice)
Sources of systematic reviews and meta-analyses
- The Cochrane Library:
- Systematic reviews
- Protocols
- Database of Abstracts of Reviews of Effects
- Medline (with systematic review filter)
- EMBASE (with systematic review filter)
Sources of health technology assessments and economic appraisals
- NIHR Health Technology Assessment programme
- The Cochrane Library:
- NHS Economic Evaluations
- Health Technology Assessments
- Canadian Agency for Drugs and Technologies in Health
- International Network of Agencies for Health Technology Assessment
Sources of randomized controlled trials
- The Cochrane Library:
- Central Register of Controlled Trials
- Medline (with randomized controlled trial filter)
- EMBASE (with randomized controlled trial filter)
Sources of evidence based reviews and evidence summaries
Sources of national policy
- Department of Health
- Health Management Information Consortium (HMIC)
Patient experiences
Sources of medicines information
The following sources are used by CKS pharmacists and are not necessarily searched by CKS information specialists for all topics. Some of these resources are not freely available and require subscriptions to access content.
Stakeholder engagement
Our policy
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Our policy
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Studies identified during literature searches are reviewed to identify the most appropriate information to author a CKS topic, ensuring any recommendations are based on the best evidence. We use the principles of the GRADE and PICOT approaches to assess the quality of published research. We use the principles of AGREE II to assess the quality of published guidelines.
Standard exclusions for scoping literature:
- Animal studies
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Possible exclusions for reviewed literature:
- Sample size too small or study underpowered
- Bias evident or promotional literature
- Population not relevant
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- Incorrect study type
- Review article
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Organizational, behavioural and financial barriers
Our policy
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We also evaluate and include evidence from NICE accredited sources which provide economic evaluations of recommendations, such as NICE guidelines. When a recommended action may not be possible because of resource constraints, this is explicitly indicated to healthcare professionals by the wording of the CKS recommendation.
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Competing interests declared for this topic:
None.
References
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