Achilles Tendon Injury: Causes, Symptoms, Treatment, and Prevention

Hugo Benalcazar

Medically reviewed by Hugo Benalcazar, Northwestern University on July 18th, 2023.

Key Takeaways

  • The Achilles tendon is the body's largest and strongest tendon, yet paradoxically receives 30% less blood flow than other tendons, making it vulnerable to injury and slower to heal.
  • Complete ruptures occur most commonly in men aged 30-50 during recreational sports, producing an audible "pop" followed by inability to push off the affected foot or stand on tiptoes.
  • Conservative treatment with the RICE protocol (rest, ice 15-20 minutes every 2-3 hours, compression, elevation) resolves 80% of minor tendinitis cases within 6-8 weeks when combined with eccentric strengthening exercises.
  • Chronic tendinopathy develops when minor injuries aren't properly rehabilitated—what starts as inflammation becomes degenerative tissue changes that can persist for months or years.
  • Surgical repair within 48 hours of complete rupture yields the best outcomes, with 90% of patients returning to pre-injury activity levels versus 60% when surgery is delayed beyond 4 weeks.

The Achilles tendon is the largest and strongest tendon in your body, connecting your calf muscles to your heel bone. Despite its strength, this tendon is prone to injury, especially among athletes and active individuals. Understanding the causes, symptoms, and treatment options for Achilles tendon injuries can help you recognize and recover from this common condition.

What Causes Achilles Tendon Injuries?

Achilles tendon injuries often occur due to sudden movements or repetitive stress on the tendon. Some common causes include:

  • Engaging in activities that involve quick speed changes, such as running, gymnastics, or tennis

  • Overusing the tendon with high-impact activities

  • Stepping into a hole or falling from a high place

  • Having tight calf muscles or bone spurs

  • Wearing ill-fitting shoes or exercising on uneven surfaces

Symptoms of Achilles Tendon Injuries

The most common signs of an Achilles tendon injury include:

  • Pain and stiffness along the Achilles tendon, especially in the morning

  • Swelling that may come and go

  • Severe pain the day after physical activity

  • A lump on the tendon

  • A popping or snapping sensation during the injury (in case of a rupture)

Achilles Tendon Injury: Causes, Symptoms, Treatment, and Prevention

Treating Achilles Tendon Injuries

Treatment for Achilles tendon injuries depends on the severity of the damage. Minor to moderate injuries usually heal on their own with proper care, such as:

  • Resting the injured leg and using crutches if needed

  • Applying ice to reduce swelling and pain

  • Compressing the leg with an elastic bandage

  • Elevating the leg while sitting or lying down

  • Taking nonsteroidal anti-inflammatory drugs (NSAIDs) to manage pain and inflammation

For severe injuries, such as a complete tendon tear, surgery may be necessary. Your doctor will discuss the best treatment options based on your specific case.

Preventing Achilles Tendon Injuries

To reduce your risk of Achilles tendon injuries, consider the following tips:

  • Stretch and strengthen your calf muscles regularly

  • Warm up before and cool down after workouts

  • Gradually increase the intensity and duration of your exercises

  • Wear supportive, well-fitting shoes

  • Avoid exercising on uneven surfaces

Incorporating Achilles tendon stretches into your daily routine can also help prevent injuries and promote flexibility.

Recovering from an Achilles Tendon Injury

Recovery time for Achilles tendon injuries varies depending on the severity of the damage. While it may take several months to fully heal, it's essential to follow your doctor's recommendations and work with a physical therapist to ensure a safe and effective recovery. Avoid rushing back into high-impact activities until your injured leg feels as strong and flexible as your uninjured leg.

Key Takeaways

  • Achilles tendon injuries are common, especially among athletes and active individuals

  • Causes include sudden movements, repetitive stress, and factors like tight calf muscles or ill-fitting shoes

  • Symptoms range from pain and stiffness to swelling and popping sensations

  • Treatment options include rest, ice, compression, elevation, NSAIDs, and surgery for severe cases

  • Preventing Achilles tendon injuries involves stretching, strengthening, proper footwear, and gradual exercise progression

The Bottom Line

Most Achilles injuries respond well to early intervention with rest and proper rehabilitation, but ignoring symptoms or pushing through pain often leads to chronic problems requiring months of recovery. Immediate medical evaluation is crucial if you hear a pop, cannot bear weight, or experience sudden severe heel pain. If you're dealing with persistent Achilles pain or want to rule out a serious injury, Doctronic can provide quick answers and guidance on next steps.

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