Question 1

What is the difference between insertional and non-insertional Achilles tendinopathy?

Accepted Answer

Insertional Achilles tendinopathy (IAT) involves degeneration, inflammation, and often calcification at the exact point where the Achilles tendon attaches to the heel bone (calcaneus) — approximately 2cm from the heel. Non-insertional Achilles tendinopathy (NIAT) occurs in the 'watershed' zone 2–6cm above the insertion, where blood supply is poorest and degeneration is most likely from repetitive overloading. Both cause posterior heel pain but at different locations, requiring different treatment approaches.

Question 2

Why is insertional Achilles tendinopathy harder to treat?

Accepted Answer

Insertional tendinopathy is more challenging because: the degenerative tissue sits at the bone-tendon junction where blood supply is inherently poor; calcification (calcium deposits) within the tendon at the insertion is common and doesn't resolve with conservative treatment; the bony spur on the posterior calcaneus (Haglund's deformity) may compound the irritation; and eccentric heel drops — the mainstay of non-insertional treatment — can worsen insertional symptoms because they load the tendon in maximum stretch at the insertion. IAT often requires longer treatment courses and has higher surgical rates.

Question 3

How is insertional Achilles tendinopathy treated differently?

Accepted Answer

Insertional tendinopathy protocol differs from non-insertional: Avoid eccentric heel drops below neutral (these stretch the insertion); instead use isometric holds (wall pushes with foot flat) in early stages; heel lifts reduce insertion tension and are more helpful for IAT than NIAT; extracorporeal shockwave therapy (ESWT) has strong evidence specifically for insertional tendinopathy with calcifications; PRP injection at the insertion shows benefit in some studies; and surgical calcification removal with Achilles debridement is performed when conservative care fails after 6 months.

Question 4

What exercises are safe for non-insertional Achilles tendinopathy?

Accepted Answer

The Alfredson eccentric heel drop protocol is the evidence-based standard for NIAT: standing on the affected foot on a step edge, lowering the heel below the step level slowly (3 seconds), using the unaffected foot to rise back up (concentric phase with both feet), then repeating — 3 sets of 15 repetitions twice daily, 7 days a week for 12 weeks. Expect discomfort during the exercise — this is appropriate; sharp pain is not. Running should be maintained at a reduced, pain-tolerable volume during rehabilitation (complete rest is counterproductive for tendinopathy).

Insertional vs Non-Insertional Achilles 2026 | DPM

Insertional vs Non-Insertional Achilles Tendonitis

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In-Office Treatment at Balance Foot & Ankle

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Insertional vs Non-Insertional Achilles Tendonitis

Treatment Approach

Recovery Timeline

Schedule

In-Office Treatment at Balance Foot & Ankle

Ready to Get Relief?

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