Achilles’ Heel: More Than Just a Saying
Did you know the term “Achilles’ heel” comes from Greek mythology?
Achilles, the son of King Peleus and the Goddess Thetis, was said to be vulnerable to an early death in battle. To protect him, Thetis dipped him in the River Styx, which was believed to grant invincibility. However, she held him by his heel—leaving that small area untouched and unprotected.
Years later, during the Trojan War, Achilles was killed by an arrow that struck his heel—his only point of weakness.
That’s why today, an “Achilles’ heel” refers to a specific weakness in an otherwise strong system.
And in the human body, a weakness in the Achilles tendon can lead to a very real condition: Achilles tendinitis.
What Is Achilles Tendinitis?
The Achilles tendon is the largest and one of the strongest tendons in the body. It connects your calf muscles to your heel bone at the back of your leg.
This tendon allows you to:
- Walk and run
- Jump
- Rise and curl under your toes
- Climb stairs
Even though it’s built to handle significant stress, it is still vulnerable to injury.
Achilles tendinitis occurs when small, repeated stresses cause tiny tears in the tendon over time. This leads to:
- Inflammation
- Pain
- Reduced function
- Possible Achilles rupture
What Causes Achilles Tendinitis?
Common causes include:
- Repetitive stress from work, sports, or daily activity
- Sudden increases in activity level (intensity, duration, or frequency)
- Tight calf muscles
- Lack of proper warm-up or stretching
- Bone spurs that irritate the tendon
- Poorly fitting shoes and/or lack of arch support
Symptoms to Watch For
Achilles tendinitis often develops gradually. Common symptoms include:
- Pain and stiffness along the tendon, especially in the morning
- Swelling near the back of the ankle
- Pain that worsens with activity
- Tenderness or thickening of the tendon
- Limited ankle mobility or flexibility
- Increased pain the day after exercise
When It Becomes More Serious
If left untreated, Achilles tendinitis can worsen over time.
A well-known example is NBA player Tyrese Haliburton, who suffered an Achilles tendon rupture during high-level play. While this is a more severe injury than tendinitis, it highlights an important point:
👉 Repeated stress on the Achilles tendon without proper recovery can lead to more serious damage.
Even for non-athletes, ongoing strain—whether from work, exercise, or improper footwear—can increase the risk of progression.
How Is It Diagnosed?
If you suspect Achilles tendinitis, your doctor will:
- Examine the back of your leg for pain and swelling
- Assess movement and flexibility
- Test for tenderness along the tendon
In some cases, imaging such as an X-ray or MRI may be used to confirm the diagnosis or rule out other conditions.
Treatment Options
Most cases can be managed with conservative care:
- Rest to prevent further irritation
- Ice to reduce inflammation
- Over-the-counter medications for pain and swelling
- Stretching and physical therapy to improve flexibility and strength
- Whirlpool heat treatments
In some cases:
- Cortisone injections may be used cautiously
- Supportive footwear with a bit of a heel rise can reduce strain on the tendon
Severe cases may require:
- Immobilization (boot, brace, or splint)
- Or, in rare cases of partial or total rupture, surgery
The Role of Support
Proper support plays an important role in both treatment and prevention.
Custom orthotics, such as ezWalker® Performance custom orthotics, can help:
- Reduce strain on the Achilles tendon
- Improve foot alignment
- Control excessive pronation or supination
- Support more efficient movement during walking
By improving biomechanics, the tendon is subjected to less twisting and stress with each step.
The Bottom Line
The Achilles tendon is strong—but not indestructible.
Understanding early symptoms and addressing the underlying causes can help prevent more serious injury and keep you moving comfortably.
For more information on how ezWalker® Performance custom orthotics can improve your foot biomechanics, contact us today. We’re so confident that you’ll experience a substantial improvement in walking comfort that we offer a 90-day, 100% money-back guarantee. So what do you have to lose – except your pain? Visit our online shop to purchase your ezWalker® Performance custom orthotics, or call today for a personalized appointment with our senior Nationally Registered Board Certified Pedorthist and company owner, Kathy Carandang.
Remember … when your feet feel good, you feel good.
