Achilles Tendinitis: Understanding the Causes, Treatment Options, and Prevention Techniques

Achilles tendinitis causes include prolonged standing, excessive walking, repetitive exercises, and sports involving frequent jumping and rapid speed changes (such as basketball and football), which are direct risk factors for this overuse injury.
A key trigger for Achilles tendinitis is inadequate stretching of the calf muscles and Achilles tendon before and after exercises, leading to reduced tendon flexibility and increased susceptibility to inflammation.
The initial symptoms of Achilles tendinitis present as pain in the Achilles tendon during strenuous activities. However, if left untreated, the condition can worsen to the point where even walking causes pain. There are potentially accompanying symptoms of swelling, redness, and warmth.
Chronic inflammation that occurs intermittently over time leads to Achilles tendon degeneration and deterioration, increasing the risk of rupture even during mild activities.
Diagnosing Achilles tendinitis with MRI scan provides the clearest visualization of tendon damage, especially when rupture is suspected.
Surgical treatment for Achilles tendon rupture offers two options: open surgical repair of the Achilles tendon and minimally invasive Achilles tendon repair using small incision technique.

The Achilles tendon is located at the back of the calf, extending from the calf muscles down to the heel. It is the largest and strongest tendon in the human body, functioning like a spring that absorbs impact and provides propulsion when we stand up, walk, run, or jump. We rely on this tendon constantly for every movement we make.

Table of Contents

What Causes Achilles Tendinitis?

This overuse injury develops from excessive use, whether through prolonged standing, extensive walking, or repetitive exercise movements that lead to muscle tightness and injury. Sports that involve speed acceleration and deceleration or activities with frequent jumping such as basketball, football, and badminton are particularly causes of Achilles tendinitis as well.
Beyond usage patterns, another crucial factor is tightness in the calf muscles and Achilles tendon that results from failing to stretch the muscles properly both before and after exercises. Having excessive tendon tightness means that the force from physical activity can trigger Achilles tendinitis more easily.
Inflammation can also result from bone and joint conditions such as gout or rheumatoid arthritis, where some patients may develop inflammation in the Achilles tendon.

The Tighter Achilles Tendon… The Greater Risk of Inflammation

Normally, each person’s Achilles tendon has varying degrees of tightness. Having a tight Achilles tendon doesn’t necessarily mean disadvantages only, as this tightness acts like a spring that provides propulsion for faster running, longer strides, higher jumps, and better athletic performance.

Conversely, when the Achilles tendon is tight, the pulling force during use becomes stronger as well. This increases the likelihood of developing Achilles tendinitis. Regular stretching exercises help significantly improve tendon flexibility.

Achilles Tendinitis Symptoms

Pain in the Achilles tendon area during use

For those with mild inflammation, pain may only be felt during intensive use, such as during exercises or intense sports activities.

For those with more advanced Achilles tendinitis, even walking short distances can cause pain

Without appropriate Achilles tendinitis treatment, the tendon’s functional capacity gradually decreases until pain always occurs during use.

Swelling, redness, and warmth around the Achilles tendon

People who experience frequent Achilles tendon inflammation over extended periods without proper treatment, with repeated symptoms intermittently, and those who don’t regularly stretch the Achilles tendon will face serious consequences. Allowing this pattern to continue for years causes gradual tendon degeneration and weakening. When the tendon deteriorates, it becomes susceptible to rupture during exercises or activities such as jumping or landing in improper postures, potentially causing an Achilles tendon injury.

How Severe Is an Achilles Tendon Rupture?

Since the Achilles tendon is the largest and strongest tendon in the body, rupture is quite severe if it happens. Some patients hear a pop sound or feel a tearing sensation in their calf or Achilles tendon. This Achilles tendon injury typically occurs during movement or active use of the tendon, such as when starting to run, jumping, or landing.

When rupture occurs, immediate pain is felt in the Achilles tendon area and full weight-bearing becomes impossible. Patients need walking support from other people. In some cases, the pain is so severe that walking is impossible, forcing immediate withdrawal from that activity. Subsequently, swelling and bruising under the skin develop due to bleeding at the rupture site.

Later, without treatment, patients may experience less pain and regain the ability to stand and walk. However, they’ll feel weak as if the leg has no strength, unable to stand and walk steadily due to the loss of propulsion from the ruptured Achilles tendon. When palpating the Achilles tendon area, the tendon may not be felt at all, or a gap between the tendon ends may be detected.

Diagnosing Achilles Tendon Rupture

After taking a medical history and conducting a preliminary physical examination, doctors can generally provide a diagnosis result to some extent. For certain patients requiring more precise diagnostic information, additional testing equipment is used. There are two primary methods:

1. X-Ray

While typically used to detect bone abnormalities, X-rays can partially reveal tendon and surrounding tissue abnormalities. For example, it shows abnormality or discontinuity of Achilles tendon shadows, along with increased swelling of surrounding tissue shadows, which are the signs of Achilles tendon rupture.

2. Magnetic Resonance Imaging (MRI)

MRI is the most effective method for diagnosing Achilles tendon rupture because it provides clear visualization of the tendon and excellent imaging of surrounding tissue swelling. This represents the most helpful method for diagnosing Achilles tendinitis and rupture conditions.

Surgical Treatment Options for Achilles Tendon Rupture

With current medical technology, surgical treatment for Achilles tendon rupture offers two approaches: open surgical repair of the Achilles tendon and minimally invasive Achilles tendon repair using small incision technique.

1. Open surgical repair of the Achilles tendon

This conventional surgical approach involves creating an incision approximately 10-15 centimeters long to visualize the tendon and perform a repair. However, this method requires a relatively large incision, resulting in slower recovery. In addition, the large surgical wound may have higher infection risks, creates a larger scar, and requires longer post-surgical care periods.

2. Minimally invasive Achilles tendon repair using small incision technique

This modern surgical technique repairs the tendon using specialized instruments that allow for smaller incisions. The advantage is an incision size of only 3-4 centimeters, causing minimal trauma to the skin and surrounding tissues while still achieving tendon repair. This approach reduces post-surgical infection risks, enables faster recovery, and results in a smaller scar.

Preventing Achilles Tendinitis

The best prevention method is regular Achilles tendon stretching, especially before and after exercises or sports activities. This advice isn’t exclusively for athletes, regular people can and should do this as well because it reduces Achilles tendon tightness, improves tendon flexibility, and enables efficient tendon function.

Many people think Achilles tendinitis strikes suddenly without warning, but in reality, we can prevent it through various self-care methods described in this article. With consistent practice, you’ll not only strengthen your Achilles tendon but also improve your overall physical health.

The Perks of Choosing kdms Hospital for Achilles Tendinitis Treatment

For those experiencing Achilles tendinitis, receiving treatment at kdms Hospital, a specialized hospital in bones, joints, and muscles in Bangkok, Thailand, means consulting with expert physicians who analyze the condition from its root causes, involve patients and their families in making a treatment decision to ensure targeted treatment results, and support patients until they can fully return to their normal lives.

An article by Sittha Chuekitkumchorn, M.D., Experienced Foot and Ankle Surgeon

Frequently Asked Questions About Achilles Tendinitis

If you experience pain in the Achilles tendon area but can’t immediately see a doctor for treatment, initially rest the tendon, apply cold compresses regularly, and take anti-inflammatory medication to reduce inflammation.

After the inflammation subsides and you can resume normal activities, consistently stretch the Achilles tendon to prevent tightness and recurrent inflammation.

After Achilles tendon surgery, approximately 6 weeks to 3 months are typically needed for proper tendon healing. During the first period, doctors won’t permit weight-bearing on the foot. Afterward, they’ll monitor progress and gradually increase weight-bearing incrementally.

Generally, patients can begin walking barefoot within 3 months post-surgery. However, since the tendon and muscles have been rested for an extended period, some atrophy may occur, necessitating rehabilitation to rebuild muscle and tendon strength. Light running may be possible approximately 6 months after surgery. For returning to playing football or competitive sports, approximately 9 months to 1 year may be required. This timeline depends on each patient’s dedication to muscle rehabilitation exercises. With consistent rehabilitation exercises, returning to beloved sports may be achievable more quickly.

While experiencing Achilles tendinitis, patients should avoid getting a massage as it may trigger inflammation process. If there is a great amount of inflammation and swelling, cold compress is recommended initially and muscle stretching exercises should follow.

Yes, it can. However, the duration depends on each patient’s inflammation level. It might take more than 4-5 months to recover in some patients, while the inflammation will intermittently occur from time to time. Therefore, choosing the right treatment for Achilles tendinitis can alleviate the symptoms within a week or two.

Shoes with supportive heel cushions or rocker bottoms can reduce impact to heels, lessening the symptoms of Achilles tendinitis.

Consult symptoms before scheduling an appointment.