The Achilles tendon is vulnerable to injuries despite being the strongest tendon in the body. Many people describe hearing a pop sound or feeling a snap at the back of their ankle when the tendon ruptures, but the signs are not always that obvious. Not knowing whether you have a torn tendon or some other leg injury can prevent you from getting timely treatment and end up increasing the risk of complications. But, how do you know if you've torn your Achilles tendon? This is exactly what we will be exploring in this blog. Along with the signs and symptoms, we will also discuss other important aspects of Achilles tendon injury.
Understanding the Achilles Tendon
It is a thick, fibrous cord behind your ankle that establishes a connection between your heel bone and your calf muscles. This tendon is what allows you to push off when you walk, run, or jump. Every time you move, this tendon is propelling you forward by utilizing minimal energy from the muscles. Without its proper functioning, even simple activities like walking or standing on your tiptoes can become incredibly difficult.
Not all Achilles tendon injuries are of the same type. Some may experience a mild strain, some may go through a partial tear, while others may experience a full rupture. A partial tear means some of the fibers of your tendon have snapped, but the tendon is still intact. On the other hand, a complete rupture is severe damage to the tendon where it breaks completely. This causes complete loss of mobility followed by intense pain, requiring immediate medical treatment.
Common Causes of Injury
Most Achilles tendon injuries occur due to the following reasons:
- Sudden increase in physical activity: Ramping up the intensity and duration of your physical activity all of a sudden can overload the tendon. Your tendon needs time to adapt to the change, and ramping up things too quickly can lead to strain or tear.
- Jumping or sprinting: These high-impact activities put a lot of stress on your Achilles tendon. It makes the tendon more vulnerable to injuries. This is the most common cause of injuries among athletes engaged in high-impact sports like basketball, tennis, and running.
- Wearing improper footwear: Walking or exercising in worn-out shoes, or shoes without proper heel support or cushioning, puts your tendons at risk of injury.
- Age-related wear and tear: As we age, our tendons tend to lose some of their strength and flexibility. Even a small strain can make it prone to tearing.
Key Signs and Symptoms
These are some signs that indicate something serious has happened to your Achilles tendon:
Sudden “Pop” or Snap Sensation
This is an obvious sign of Achilles rupture. People report hearing a pop or snap when the tendon breaks partially or completely. However, not everyone experiences this sensation. It is usually accompanied by immediate pain and loss of mobility.
Sharp Pain at the Back of the Ankle or the Calf
Right after the injury, you will likely feel intense pain near your heel or lower calf. The pain intensifies as you engage in physical activities like walking or running. The severity of pain usually varies depending on the type of injury your tendon is experiencing.
Swelling and Bruising
After the injury, you will likely notice swelling or bruising around the back of your ankle and heel area. The inflammation is your body’s natural response to the injury. Some may experience mild swelling, while others may have a more pronounced swelling, which sometimes spreads up to the leg.
Difficulty Walking or Standing on Toes
If you find it difficult standing on your toes or walking, this is a major red flag. When the Achilles tendon is injured, it becomes very difficult to push your feet off the ground. The affected foot loses its ability to bear the weight of the body.
Visible or Palpable Gap
If you touch the area where the Achilles tendon is located, usually 2 to 6 cm above your heel bone, you might feel a noticeable indent or gap. In some cases, the indentation is visible in the area where tendon rupture has occurred. This gap indicates the tendon has separated and that you are most likely dealing with a complete tendon rupture.
Weakness or Limping
Even if you can walk with the injury, the weakness in your affected tendon makes it difficult to move around. Your gait may change, and you may find yourself limping or dragging your feet when walking. This weakness does not go away on its own like other muscle strains.
Partial Tear vs. Complete Tear: What You Need to Know
In a partial Achilles tendon tear, only some of the tendon fibers are torn. This often occurs due to overstretching of the tendon. The symptoms tend to be less severe than complete rupture. You will feel some weakness and sharp pain in the back of your ankle, but you might still be able to walk or stand on your toes. The discomfort is usually bearable, and you may feel some instability during movement. There may be swelling or tenderness in the affected area, which is usually more noticeable in the morning when your body has been inactive for a long period. Depending on the extent of injury, the condition is often treated with a conservative approach, like rest and physical therapy.
A complete rupture is a serious case. This means the tendon has snapped and separated into two distinct ends. This usually occurs during high-intensity activities. People often notice a pop sound when this happens. Unlike a partial rupture, the symptoms are severe, such as intense pain in the affected area, extreme difficulty in movement, and a noticeable gap in the area where the tendon ruptured. Professionals often recommend surgical procedures for the treatment.
Below is a quick comparison between a partial and a complete Achilles tendon tear:
| Differences | Partial Tear | Complete Tear |
| Tendon damage | Some fibers of the tendon are still connected | Tendon is completely separated into two ends |
| Ability to stand on toes | Standing on toes is possible with mild pain and discomfort | Excruciating pain and weakness make standing on toes almost impossible |
| Pop or snap sensation | May or may not occur | Very common |
| Inflammation | Less severe | Swelling is more pronounced |
| Visible indentation | May not be present | Often present |
| Walking | Possible, but you may experience pain | Impossible in most cases |
| Treatment options | Non-surgical, conservative treatment methods | Surgical intervention needed in most cases |
| Recovery duration | 6 to 12 weeks | 4 to 12 months |
How Achilles Tendon Tears Are Diagnosed
Doctors use a combination of various methods to accurately diagnose if you are experiencing an Achilles tendon tear. The methods include:
Physical Examination
Your doctor evaluates your condition based on the following physical examinations:
- Medical history: The first step involves checking your medical history– whether you have a history of foot injuries or other medical conditions and ongoing medications. The doctor asks you about what symptoms you have noticed and how they have progressed over time.
- Thompson Test: This preliminary test does not require any equipment. You are required to lie on your stomach on an examination table with your feet hanging off the edge. The doctor examines your calf muscle by gently squeezing it to see if your Achilles tendon is intact.
- Gap Palpation: You are asked to stand on your feet. The doctor gently palpates along the back of your ankle to check if there is a noticeable gap or indentation. If the gap is felt, it is a strong indication of a complete tear.
- STAMP test: The doctor may also try the STAMP (Stand and Maintain Plantarflexion) test. This requires you to stand in a wall-assisted posture and lift the unaffected foot off the ground for a few seconds. If you are not able to hold the position for five seconds, it hints that you have an injured Achilles tendon.
Imaging Tests
Diagnosing Achilles tendon injury involves the following imaging tests:
- X-Ray: It gives a visualization of bones, helping doctors rule out bone fractures associated with leg injuries.
- MRI: It provides detailed images of soft tissues and can show where the tear is and how extensive it is.
- Ultrasound: This gives a more accurate diagnosis by allowing the doctor to see the Achilles tendon tear in real time.
What to Do If You Suspect a Torn Achilles Tendon
If you think you have a torn Achilles tendon, here is what you should do immediately:
- Stop the activity immediately: The moment you feel the pop sensation at the back of your ankle, stop whatever you are doing right at that moment. Take a pause and test whether you can still move without severe discomfort. If you feel you cannot move, call someone for help.
- Apply the R.I.C.E. method: Rice, ice, compression, and elevation methods may help ease the discomfort. Rest your injured leg and apply ice gently for around 15 minutes to minimize inflammation. Using a compression bandage and elevating your leg for a few minutes may also help ease pain and swelling.
- Seek medical attention promptly: Don’t wait for a few days to see if the injury goes away on its own. Achilles tendon tear needs a professional evaluation as soon as possible to prevent further damage to the tendon.
- Avoid walking or stretching the tendon: Do not attempt to walk with your injured foot. It may stretch the torn tendon, causing intense pain and further damaging the tissues.
- Avoid self-massaging: Don’t massage the affected area by yourself. It can put the already injured tendon under more stress and escalate the injury.
Treatment Options for Torn Achilles Tendon
The treatment approach for your specific case depends on the intensity of your Achilles tendon injury:
Non-Surgical Treatments
For partial Achilles tendon tears or in cases where surgery is not needed, non-surgical treatment works well. This treatment approach often involves resting injured tendons by using crutches, applying ice, taking pain-relief medications, undergoing physical therapy, and minimizing movement of your injured leg for the first few weeks. Patients are often put in a cast to keep the affected foot from moving.
Surgical Treatments
Surgery is the ideal option for complete ruptures. The surgical procedure may involve making an incision behind your ankle and stitching the torn tendon ends back together. Sometimes, the procedure may also involve reinforcing the torn tendons with other tendons. This approach reduces the chances of a tendon tear again.
Preventing Future Achilles Injuries
Follow these preventive measures to protect your foot from future Achilles tendon injuries:
- Proper warm-up and stretching routines: Never jump into intense activities like running or playing sports before warm-up exercises. Spend at least 10 minutes warming up with light stretching exercises.
- Gradual training increases: Be patient with your training sessions and increase the intensity and duration of your sessions gradually so that you don’t overstress your Achilles tendon.
- Wearing supportive footwear: Your footwear matters a lot when it comes to your foot health. Always invest in good-quality, supportive footwear for daily wear, sports, or other activities.
- Strengthening calf muscles and flexibility exercises: Strong, flexible calf muscles take the load off of your Achilles tendon. Exercises like calf raises, heel drop, and resistance band calf exercises help improve calf muscle strength and flexibility.
Frequently Asked Questions (FAQs)
Can I walk with a torn Achilles tendon?
It depends on the intensity of the injury. With a partially torn tendon, you may still be able to walk with mild pain. But a complete rupture makes it almost impossible to move.
How long does it take to recover from a torn Achilles tendon?
A partial tear can heal within 6 to 12 weeks, whereas a complete tear takes anywhere from 4 to 12 months to heal.
What happens if I ignore a torn Achilles tendon?
Ignoring an Achilles tendon tear can worsen and lead to serious consequences, including a complete tear, chronic pain and discomfort, loss of mobility, and an increased risk of other foot injuries.
Is it possible to have a minor Achilles tendon tear?
Yes. It is absolutely possible to have a minor Achilles tendon tear, which can worsen if left untreated.
Can a torn Achilles tendon heal on its own?
No, an Achilles tendon tear does not heal on its own. It needs medical attention.
What does a torn Achilles tendon feel like?
Most people dealing with Achilles tendon tears report feeling sudden, intense pain and discomfort, and find themselves limping while walking.
Can I drive with a torn Achilles tendon?
It depends on how serious your condition is. If the injury is severe, it is best to give your injured foot a complete rest.
Can I feel a gap or a dent if my Achilles tendon is torn?
If your Achilles tendon has completely separated into two ends, you may be able to feel a gap or indent in the area where the tendon is torn.
References
- Wikipedia. “Achilles Tendon.” https://en.wikipedia.org/wiki/Achilles_tendon
- Cleveland Clinic. “Achilles Tendon Rupture.” https://my.clevelandclinic.org/health/diseases/21703-achilles-tendon-rupture
- Carley Millhone. “What Does It Mean To Tear Your Achilles Tendon?” Health, 2025. https://www.health.com/achilles-tendon-tear-8347377
- Giselle M. Porter. “The STAMP Test: A Novel Clinical Test in Diagnosing Achilles Tendon Ruptures.” ResearchGate, 2022. https://www.researchgate.net/publication/358024173_The_STAMP_Test_A_Novel_Clinical_Test_in_Diagnosing_Achilles_Tendon_Ruptures
- Eleesha Lockett. “What to Expect from an Achilles Tendon Rupture.” Healthline, 2025. https://www.healthline.com/health/sports-injuries/ruptured-achilles-tendon
- Mayo Clinic. “Achilles tendon rupture.” https://www.mayoclinic.org/diseases-conditions/achilles-tendon-rupture/diagnosis-treatment/drc-20353239
- Kirsten Nunez. “Achilles Tendon Stretches and Strength Exercises.” Healthline, 2025. https://www.healthline.com/health/achilles-tendon-stretch#1
