Achilles Tendinitis

Achilles tendinitis is a painful condition affecting the Achilles tendon, the strong tendon that connects the calf muscles to the heel bone. It commonly develops as a result of repetitive loading during running, jumping, climbing, or sudden increases in physical activity.

In persistent cases, the term Achilles tendinopathy is often more accurate because the problem may involve structural tendon changes rather than inflammation alone. Treatment depends on whether the condition affects the middle portion of the tendon or its insertion at the heel, the duration of symptoms, tendon quality, activity level, and associated problems such as Haglund's deformity or calcification.

What Is the Achilles Tendon?

The Achilles tendon is the largest tendon in the human body.

It connects the gastrocnemius and soleus calf muscles to the calcaneus, or heel bone.

It plays an essential role in walking, running, jumping, and pushing the body forward.

What Is Achilles Tendinitis?

Achilles tendinitis refers to pain and irritation involving the Achilles tendon.

In acute cases, inflammation may contribute to symptoms, while chronic cases more commonly involve degeneration, thickening, collagen disorganization, and reduced tendon capacity.

What Is Achilles Tendinopathy?

Achilles tendinopathy is a broader term describing persistent pain and structural changes in the Achilles tendon.

It is commonly divided into two main types:

• Midportion Achilles tendinopathy
• Insertional Achilles tendinopathy

What Is Midportion Achilles Tendinopathy?

Midportion Achilles tendinopathy affects the tendon several centimeters above its attachment to the heel bone.

Patients often notice tendon thickening, tenderness, morning stiffness, and pain during or after running and jumping.

What Is Insertional Achilles Tendinopathy?

Insertional Achilles tendinopathy affects the area where the tendon attaches to the calcaneus.

Pain is usually located directly at the back of the heel and may be aggravated by shoes, uphill walking, running, or activities that increase compression at the tendon insertion.

What Causes Achilles Tendinopathy?

Achilles tendinopathy usually develops when tendon loading exceeds the tissue's ability to recover and adapt.

Possible contributing factors include:

• Rapid increase in running distance
• Sudden increase in training intensity
• Frequent hill running
• Sprinting and jumping
• Insufficient recovery
• Reduced calf strength
• Limited ankle mobility
• Previous Achilles injury
• Changes in footwear
• Changes in training surface

Who Is at Risk?

Achilles tendinopathy is commonly seen in:

• Runners
• Football players
• Basketball players
• Racquet-sport athletes
• People who suddenly increase exercise
• Middle-aged recreational athletes
• People with previous Achilles tendon problems

What Are the Symptoms of Achilles Tendinitis?

Common symptoms include:

• Pain at the back of the ankle or heel
• Morning stiffness
• Tenderness along the tendon
• Tendon thickening
• Pain during running or jumping
• Pain after exercise
• Reduced push-off strength
• Swelling around the tendon

Why Is Morning Stiffness Common?

Achilles tendinopathy often causes stiffness after periods of inactivity.

The tendon may feel tight or painful during the first steps in the morning and improve somewhat after movement.

Why Does Pain Sometimes Improve During Exercise?

Some patients notice that pain decreases after the tendon warms up.

This temporary improvement does not necessarily mean the tendon is tolerating the activity well, especially if pain increases afterward or the next morning.

Can Achilles Tendinopathy Cause a Lump?

Yes.

Chronic midportion tendinopathy can cause localized thickening or a palpable swelling along the tendon.

In insertional disease, prominence at the back of the heel may also be related to Haglund's deformity, calcification, or bursitis.

What Is Haglund's Deformity?

Haglund's deformity is a bony prominence at the upper back of the calcaneus.

It can increase irritation around the Achilles insertion and may coexist with insertional Achilles tendinopathy or retrocalcaneal bursitis.

The presence of Haglund's deformity alone does not automatically mean surgery is necessary.

What Is Retrocalcaneal Bursitis?

The retrocalcaneal bursa is a small fluid-filled structure located between the Achilles tendon and heel bone.

Irritation of this bursa can cause pain and swelling at the back of the heel and may occur together with insertional Achilles tendinopathy.

What Is Achilles Tendon Calcification?

Chronic tendon degeneration can sometimes be associated with calcium deposits within or near the Achilles tendon insertion.

Calcification can contribute to stiffness and pain but should be interpreted together with symptoms rather than treated based on X-ray appearance alone.

How Is Achilles Tendinopathy Diagnosed?

Diagnosis is usually based on symptoms and physical examination.

The examination may evaluate:

• Location of tenderness
• Tendon thickening
• Swelling
• Calf strength
• Ankle range of motion
• Pain during heel raises
• Foot alignment
• Signs of partial or complete rupture

What Is the Difference Between Achilles Tendinopathy and Achilles Rupture?

What Is the Thompson Test?

The Thompson test is used when an Achilles tendon rupture is suspected.

The calf is squeezed while the patient lies prone. Reduced or absent plantar flexion can suggest a complete rupture.

Can You Walk With an Achilles Tendon Rupture?

Sometimes.

Other muscles can allow limited walking even when the Achilles tendon is completely ruptured.

Being able to walk therefore does not exclude a rupture.

Are X-Rays Useful?

X-rays do not show the tendon in detail but can identify calcification, heel spurs, Haglund's deformity, fractures, or other bony abnormalities.

When Is Ultrasound Used?

Ultrasound can provide dynamic evaluation of the Achilles tendon.

It may help assess:

• Tendon thickening
• Structural degeneration
• Partial tears
• Complete rupture
• Neovascularization
• Surrounding bursitis

When Is MRI Used?

MRI is not required for every patient.

It may be helpful when symptoms are persistent, a partial tear is suspected, surgery is being considered, or the diagnosis is uncertain.

MRI can also evaluate the tendon insertion, surrounding bursae, calcification, bone marrow changes, and other soft-tissue structures.

Does an Abnormal MRI Always Mean the Tendon Is Painful?

No.

Structural tendon changes can sometimes be seen in people without symptoms.

Imaging findings should therefore be correlated with clinical examination and pain location.

How Is Achilles Tendinopathy Treated?

Most patients are initially treated without surgery.

Management may include:

• Activity modification
• Progressive calf strengthening
• Tendon-loading exercises
• Temporary reduction of running and jumping
• Footwear modification
• Heel lifts in selected patients
• Correction of training errors
• Gradual return to activity

Should Complete Rest Be Used?

Complete prolonged rest is generally not the preferred treatment for chronic Achilles tendinopathy.

Reducing painful loads may be necessary, but progressive mechanical loading is important for restoring tendon capacity.

What Is Load Management?

Load management means adjusting running, jumping, sprinting, hills, and other activities so that the tendon can recover while still receiving appropriate exercise stimulus.

Sudden changes in workload should be avoided.

What Exercises Are Used for Achilles Tendinopathy?

Rehabilitation may include:

• Isometric calf exercises
• Double-leg heel raises
• Single-leg heel raises
• Progressive resistance exercises
• Eccentric calf loading
• Heavy slow resistance training
• Later-stage hopping and running drills

What Are Eccentric Heel Drops?

Eccentric heel-drop exercises load the calf and Achilles tendon while the muscle-tendon unit lengthens.

They have traditionally been used for midportion Achilles tendinopathy.

Modern rehabilitation may use several different loading methods rather than relying only on eccentric exercises.

Are Eccentric Exercises Suitable for Insertional Achilles Tendinopathy?

They may need to be modified.

Dropping the heel far below the level of the forefoot can increase compression at the Achilles insertion and may aggravate insertional symptoms.

Exercises are often initially performed without excessive ankle dorsiflexion.

Should the Achilles Tendon Be Stretched?

Stretching can help selected patients with limited ankle mobility, but aggressive stretching is not appropriate for every type of Achilles pain.

In insertional tendinopathy, deep dorsiflexion can increase compression between the tendon and heel bone and may worsen symptoms.

What Is Heavy Slow Resistance Training?

Heavy slow resistance uses progressively heavier calf exercises performed at a controlled pace.

It can help increase calf strength and tendon-loading capacity in selected patients.

Can Heel Lifts Help?

Heel lifts may temporarily reduce tensile and compressive load on the Achilles tendon in selected patients.

They are generally used as part of a broader rehabilitation program rather than as the only treatment.

Does Footwear Matter?

Shoes that repeatedly rub or compress the back of the heel can worsen insertional symptoms.

Footwear modification may be helpful, particularly when Haglund's deformity or local heel irritation is present.

Are Orthotics Used?

Orthotics may be considered in selected patients when foot mechanics contribute to abnormal loading.

They are not necessary for every patient with Achilles tendinopathy.

Can Ice Help?

Cold application may provide temporary pain relief after activity.

It does not restore tendon structure or replace progressive rehabilitation.

Are Anti-Inflammatory Medications Used?

Medication may help control short-term pain in selected patients when medically appropriate.

Chronic tendinopathy is not simply an inflammatory problem, so medication alone does not address tendon capacity.

Are Corticosteroid Injections Used?

Corticosteroid injections around the Achilles tendon are approached cautiously because tendon weakening and rupture are important concerns.

Direct injection into the tendon is generally avoided.

Treatment should be individualized according to the exact structure causing symptoms.

Is PRP Used for Achilles Tendinopathy?

Platelet-rich plasma has been studied for Achilles tendinopathy, but results are variable.

PRP should not be presented as a guaranteed method of regenerating normal tendon tissue or eliminating symptoms.

Is Shockwave Therapy Used?

Extracorporeal shockwave therapy may be considered in selected chronic cases that do not improve sufficiently with a structured rehabilitation program.

It is generally used as an adjunct to progressive loading rather than as a replacement for exercise therapy.

Are Night Splints Useful?

Night splints are not required for every patient and have not consistently shown clear benefit for Achilles tendinopathy.

Their use should be individualized rather than routine.

When Is Surgery Considered?

Surgery is generally considered only after persistent symptoms fail to improve despite an adequate period of well-structured non-surgical treatment.

The surgical plan depends on whether the problem is midportion or insertional and whether there is significant degeneration, calcification, Haglund's deformity, or partial tearing.

What Is Surgery for Midportion Achilles Tendinopathy?

In selected chronic cases, surgery may involve removing severely degenerated tendon tissue and releasing abnormal adhesions around the tendon.

The exact procedure depends on how much healthy tendon remains.

What Is Surgery for Insertional Achilles Tendinopathy?

Surgery may involve removal of damaged tendon tissue, calcification, inflamed bursal tissue, and selected prominent bone from the back of the heel.

If a substantial portion of the tendon is detached during treatment, it may need to be repaired back to the calcaneus.

Is Haglund's Deformity Always Removed During Surgery?

No.

Bone removal is considered only when the prominence is clinically relevant and contributes to tendon or bursal compression.

X-ray appearance alone is not enough to determine the need for surgery.

What Is Achilles Tendon Debridement?

Debridement involves removing severely degenerated or nonfunctional tendon tissue.

The remaining healthy tendon is preserved as much as possible.

When Is Tendon Transfer Needed?

When extensive tendon degeneration leaves insufficient functional Achilles tissue, a tendon transfer may be considered in selected patients.

The flexor hallucis longus tendon is one option that can be used to augment Achilles function.

Tendon transfer redistributes existing muscle power and does not create new strength.

What Are the Risks of Achilles Tendon Surgery?

Possible risks include:

• Infection
• Wound-healing problems
• Persistent pain
• Scar sensitivity
• Nerve irritation
• Joint stiffness
• Weakness
• Recurrent tendon problems
• Need for additional treatment

What Is Recovery Like After Surgery?

Recovery depends on the procedure performed.

Limited debridement may have a different rehabilitation program from extensive insertional tendon repair or tendon transfer.

Weight bearing, ankle movement, strengthening, and return to sports should therefore be individualized rather than based on one universal timetable.

How Long Does Achilles Tendinopathy Take to Improve?

Recovery can take time because tendon adaptation is gradual.

Long-standing symptoms commonly require a structured rehabilitation program over an extended period before the tendon regains tolerance for running and jumping.

Can Achilles Tendinopathy Become Chronic?

Yes.

Symptoms can persist when excessive tendon loading continues or when rehabilitation is stopped too early.

Chronic symptoms do not automatically mean surgery is required.

Can Achilles Tendinopathy Lead to Rupture?

Degenerative tendon changes can be associated with reduced tendon quality, but not every patient with Achilles tendinopathy develops a rupture.

Sudden loss of push-off strength, a snapping sensation, or a new gap in the tendon should be assessed promptly for rupture.

Can an Achilles Tendon Rupture Be Treated Without Surgery?

Yes, selected acute Achilles tendon ruptures can be treated non-surgically using functional rehabilitation and appropriate immobilization.

Surgical and non-surgical treatment both have advantages and limitations, and the decision depends on age, activity demands, injury characteristics, medical factors, and patient preferences.

When Can Walking Continue?

Walking can often continue if it does not significantly increase symptoms.

In more painful cases, temporary reduction in walking distance, heel lifts, or other protective measures may be considered.

When Can Running Resume?

Running should be gradually reintroduced after the tendon can tolerate daily activity and progressive calf strengthening without a significant increase in symptoms.

Running volume, speed, and hills should be increased gradually.

When Can Jumping and Sprinting Resume?

Jumping and sprinting place substantially greater loads on the Achilles tendon.

These activities are generally introduced later after sufficient calf strength, single-leg control, and tendon tolerance have returned.

When Can Athletes Return to Sport?

Return to sport should be based on functional criteria such as:

• Minimal or controlled pain
• Restored ankle movement
• Calf strength
• Single-leg heel-raise capacity
• Running tolerance
• Jumping ability
• Sport-specific movement
• Ability to tolerate repeated loading

Can Achilles Tendinopathy Recur?

Yes.

Recurrence can occur when running or jumping volume is increased too quickly or when calf strength and tendon capacity have not fully recovered.

How Can Achilles Tendon Problems Be Prevented?

Risk-reduction strategies include:

• Increasing training gradually
• Maintaining calf strength
• Allowing adequate recovery
• Avoiding sudden increases in hill running
• Progressing sprint and jumping loads gradually
• Using appropriate footwear
• Completing rehabilitation after previous tendon injury

When Should You See an Orthopedic Specialist?

Evaluation may be appropriate when there is:

• Persistent Achilles pain
• Morning stiffness that does not improve
• Increasing tendon thickening
• Pain limiting walking or running
• Symptoms persisting despite rehabilitation
• Suspected partial tendon tear
• Significant insertional pain with Haglund's deformity
• Difficulty returning to sport

When Is Urgent Evaluation Needed?

Prompt assessment is appropriate when there is a sudden snapping sensation at the back of the ankle, major loss of push-off strength, inability to perform a normal heel raise, sudden swelling or bruising, or a palpable gap in the tendon.

These findings may indicate an acute Achilles tendon rupture.

Achilles Tendinitis Treatment in Antalya

Treatment begins by determining whether symptoms arise from midportion Achilles tendinopathy, insertional disease, retrocalcaneal bursitis, Haglund's deformity, calcification, partial tearing, or an acute tendon rupture.

Most patients are treated without surgery using load modification and progressive calf-strengthening exercises. Rehabilitation is adjusted according to the location of the problem because exercises that are appropriate for midportion tendinopathy may need to be modified for insertional Achilles pain.

When symptoms persist despite structured rehabilitation, ultrasound or MRI may be used to evaluate tendon structure and associated abnormalities. Shockwave therapy or other selected treatments may be considered, while surgery is generally reserved for persistent structural disease that significantly limits function.

Frequently Asked Questions About Achilles Tendinitis

What is Achilles tendinitis?

Achilles tendinitis describes pain and irritation of the Achilles tendon, although chronic cases are often more accurately called Achilles tendinopathy.

What is the difference between midportion and insertional Achilles tendinopathy?

Midportion disease affects the tendon above the heel attachment, while insertional disease affects the area where the tendon attaches directly to the calcaneus.

Should I stop running completely?

Not always. Running may need to be reduced or temporarily stopped if it consistently aggravates symptoms, while rehabilitation continues with appropriate loading.

Are heel-drop exercises useful?

They can be useful in selected cases, particularly midportion tendinopathy, but insertional cases may require modification to avoid excessive compression at the heel.

Should I stretch the Achilles tendon?

Stretching can help selected patients, but aggressive dorsiflexion may aggravate insertional Achilles tendinopathy.

Does Achilles tendinopathy need MRI?

Not usually. MRI is more useful when symptoms persist, a partial tear is suspected, or surgery is being considered.

Can PRP heal Achilles tendinopathy?

PRP has been studied, but evidence is variable and it should not be considered a guaranteed tendon-regeneration treatment.

Does Achilles tendinopathy require surgery?

Usually not. Surgery is generally reserved for persistent cases that do not improve with an adequate rehabilitation program.

Can Achilles tendinopathy cause rupture?

Tendon degeneration may be associated with reduced tendon quality, but most patients with tendinopathy do not automatically progress to rupture.

When can I return to running?

Running can usually be reintroduced gradually once daily activities and progressive calf-loading exercises can be performed without significant worsening of symptoms.