Achilles Tendonitis: The Complete Recovery Guide
The Achilles Problem
Your Achilles tendon is the strongest tendon in your body—and one of the most commonly injured. It connects your calf muscles to your heel bone and handles forces up to 8 times your body weight during running.
When it starts hurting, it's telling you something is wrong. Ignore it, and you risk a rupture. Address it properly, and you'll come back stronger.
Types of Achilles Problems
Insertional Tendinopathy
Pain at the heel where the tendon attaches to the bone. Often associated with bone spurs. Worse with hill running and prolonged standing.
Midportion Tendinopathy
Pain 2-6 cm above the heel, in the body of the tendon. The most common type. Often has visible thickening or a nodule.
Paratendinitis
Inflammation of the tissue surrounding the tendon, not the tendon itself. Burning pain, possible crepitus (crackling sensation).
Why It Happens
Achilles problems are overload injuries. The tendon can't keep up with the demands placed on it.
Training errors
Biomechanical factors
Other risk factors
Symptoms
Warning signs of progression:
What Actually Works
Load Management
Like all tendinopathies, the Achilles needs load to heal—but the right amount.
The pain monitoring model:
If pain is higher or lasting longer, reduce load. If pain is minimal, gradually increase.
Eccentric Loading (The Gold Standard)
The Alfredson protocol is the most studied and effective treatment for Achilles tendinopathy:
Eccentric heel drops:
For midportion tendinopathy:
1. Stand on edge of step on balls of feet
2. Rise up on both feet
3. Shift weight to affected leg
4. Slowly lower heel below step level (3-5 seconds)
5. Return to start using both legs
6. 3 sets of 15, twice daily
7. Progress by adding weight (backpack, weighted vest)
For insertional tendinopathy:
The protocol:
Isometric Exercise (For Pain Relief)
Heavy isometric holds reduce tendon pain:
1. Single-leg heel raise, hold at top
2. 45-second holds, 4-5 repetitions
3. Use before activity to reduce pain
Progressive Strengthening
After 4-6 weeks of eccentrics, add concentric strength:
Heavy slow resistance:
Plyometric progression (later stages):
Calf Stretching (Careful!)
Controversial in Achilles tendinopathy:
What Doesn't Work
Complete rest
Tendons need load. Complete rest leads to further degeneration and weaker tissue.
Cortisone injections
High risk of tendon rupture. Generally contraindicated for Achilles.
Passive treatments only
Massage, ultrasound, and TENS don't heal the tendon. They can be adjuncts but not the main treatment.
Stretching alone
Doesn't address tendon degeneration. Loading is key.
Other Treatment Options
Shockwave therapy
Evidence supports its use for stubborn cases. Typically 3-6 sessions.
Night splints
Keep the ankle dorsiflexed overnight, reducing morning stiffness.
Heel lifts
Reduce tendon strain temporarily. Useful in acute phases.
GTN patches
Topical nitric oxide may help tendon healing. Prescription required.
PRP injections
Mixed evidence. May help in some cases.
Timeline
Achilles tendinopathy takes time:
There are no shortcuts. Consistent loading over months is required.
When to Worry
See a doctor immediately if:
These may indicate Achilles rupture—a surgical emergency.
See a doctor soon if:
Return to Running
Don't rush back. Progression:
1. Pain-free walking
2. Eccentric exercises without next-day flare
3. Light jogging on flat surfaces (walk-jog intervals)
4. Gradual increase in duration
5. Add intensity (hills, speed) last
6. Continue strength training maintenance
Allow 3-6 months minimum before returning to full training.
Prevention
The Bottom Line
Achilles tendinopathy is frustrating but treatable. The key is consistent progressive loading—not rest, not passive treatments, not injections. Eccentric exercises for 12+ weeks form the foundation. Add heavy resistance training and plyometrics as you improve.
It takes patience. But with the right approach, most people recover fully and return to their activities stronger than before.