Achilles Tendonitis Treatment: Exercises, Therapies & Recovery Timeline

Achilles tendinitis is one of the most undertreated and over-medicated conditions in foot and ankle medicine. Patients arrive at our offices after months — sometimes years — of cycling through ice, NSAIDs, cortisone injections, and “rest.” The thing that actually works for chronic Achilles tendinitis has been published in randomized trials since the 1990s, and most patients have never been prescribed it correctly.

The treatment that works is the Alfredson eccentric heel drop protocol. The original 1998 RCT (Alfredson et al., 1998) showed 89% return to pre-injury activity in chronic Achilles tendinopathy after 12 weeks. Subsequent trials have replicated this finding repeatedly. Yet I still see patients in 2026 who have never been told to do it correctly. Let me fix that.

Tendinitis vs. tendinopathy vs. rupture (it matters)

• Achilles tendinitis — acute inflammation, usually within days/weeks of onset. Pain on activity, sometimes warmth and swelling. Most cases resolve in 4–6 weeks with relative rest.
• Achilles tendinopathy / tendinosis — chronic degeneration of the tendon (>3 months). This is what most “chronic Achilles tendinitis” actually is. The tissue is degenerated, not inflamed. NSAIDs don’t help because there’s no significant inflammation to suppress.
• Achilles rupture — complete structural failure. Sudden onset with a pop. Different management — see our Achilles rupture page.

The terminology matters because it predicts what works. Acute tendinitis often responds to rest + ice + brief NSAIDs. Chronic tendinopathy (more common in patients who seek a podiatrist) needs eccentric loading — the opposite of what feels intuitive.

Two patterns: midportion vs. insertional

Midportion Achilles tendinopathy (75% of cases)

Pain 2–6 cm above the heel — in the midsubstance of the tendon. Often a palpable thickening or nodule. Most commonly affects runners, jumpers, and middle-aged “weekend warriors.”

Responds best to: classic Alfredson eccentric protocol with full ankle range of motion (heel drops over the edge of a step).

Insertional Achilles tendinopathy (25% of cases)

Pain at the back of the heel where the tendon attaches to the calcaneus. Often associated with a Haglund’s deformity (bony prominence) and posterior heel bursitis. Pressure from shoe heel counters aggravates.

Responds best to: modified eccentric protocol with limited dorsiflexion (don’t drop below neutral — this impinges the tendon against the calcaneus and worsens symptoms). Heel lifts (5–10mm) help. Open-back shoes during recovery.

The distinction matters because doing classic Alfredson heel drops with insertional tendinopathy makes it WORSE. If your pain is at the bony heel attachment (not 2–6cm up the tendon), don’t drop your heel below the step — limit the bottom of the motion to neutral ankle position.

The Alfredson protocol — how to do it correctly

The protocol patients usually get wrong has three components. Done right, ~80% of chronic midportion Achilles tendinopathy resolves by week 12.

The setup

• Stand on a step with the balls of your feet on the edge, heels hanging off
• Hold onto a railing for balance
• Start on the unaffected leg (or both legs if bilateral)

The motion (eccentric = lowering phase only)

• Rise up onto the balls of your feet using the GOOD leg
• Transfer weight to the AFFECTED leg at the top
• Slowly lower the heel of the AFFECTED leg below the step level (2–3 seconds)
• Use the good leg to come back up — NEVER push up with the affected leg
• That’s one rep

The volume

• 3 sets of 15 reps with knee STRAIGHT (targets gastrocnemius)
• 3 sets of 15 reps with knee BENT (targets soleus)
• Twice daily, every day, for 12 weeks
• Total: 180 reps per day. Yes, really. Less than this doesn’t replicate the trial protocols.

The progression

• Week 1–2: Bodyweight only. Expect some discomfort during exercises (4–6/10 pain is acceptable; if >7/10 reduce range).
• Week 3+: When bodyweight feels easy, add load. Start with a backpack containing 5lb of weight. Progress 5lb every 1–2 weeks.
• Week 6–8: Typical loading reaches 20–30 lbs in backpack.
• Week 12: Reassess. If 80%+ better, transition to maintenance (3x weekly). If <50% better, escalate to EPAT shockwave.

The full evidence-ranked ladder

Step 1 — Activity modification (Evidence Level A)

Reduce — don’t eliminate — the activity that aggravates symptoms. Complete rest leads to deconditioning that prolongs recovery. Pool running, cycling, and swimming maintain fitness without tendon load. Continue weight training including upper body.

Step 2 — Eccentric heel drops (Evidence Level A)

The Alfredson protocol detailed above. The single highest-evidence treatment for chronic Achilles tendinopathy. Start week 1, continue through week 12 regardless of how you feel.

Step 3 — Heel lift (Evidence Level B)

5–10mm heel lifts in shoes reduce Achilles tension during weight-bearing. Particularly useful for insertional cases and during the first 2–4 weeks of eccentric loading. Both shoes — symmetric to avoid creating a leg-length discrepancy.

Step 4 — Topical NSAIDs (Evidence Level B short-term)

Voltaren gel during early acute flares (5–7 days). Oral NSAIDs aren’t generally helpful for chronic tendinopathy and may impair the healing response — avoid as long-term management.

Step 5 — EPAT shockwave (Evidence Level A for refractory cases)

If eccentric loading alone isn’t producing improvement by week 8, EPAT shockwave is the highest-evidence add-on. A 2020 meta-analysis showed 67–82% improvement when shockwave is combined with continued eccentric loading (Mani-Babu et al., 2015).

Protocol: 3–5 sessions weekly, 2,000 pulses each, focused over the symptomatic region. No anesthesia, no downtime. Continue your eccentrics throughout the shockwave course.

Step 6 — PRP injection (Evidence Level C)

Platelet-rich plasma injection has theoretical appeal (growth factors to stimulate healing) but inconsistent evidence in published trials. Some studies show benefit; others show equivalent to saline. Reserved for select refractory cases. Not first-line.

Step 7 — Surgery (Evidence Level B for refractory)

For patients who fail 6–9 months of correct conservative care. The procedure depends on the pattern:

• Midportion tendinopathy: Open or minimally invasive debridement of degenerated tissue + paratenon release. 80–90% good outcomes.
• Insertional tendinopathy with Haglund’s: Calcaneoplasty (bony prominence resection) + Achilles debridement. Sometimes requires FHL tendon transfer if significant tendon removal is required.

Recovery: 4–8 weeks immobilization, 3–6 months return to athletic activity.

What doesn’t work (and why patients keep getting it)

Cortisone injection into the Achilles

Strongly avoid. Cortisone weakens collagen, and intratendinous injection raises rupture risk substantially in the following 6 months. Even peri-tendinous injection (around the tendon, not into it) is controversial. The short-term pain relief is rarely worth the long-term cost. I do not perform cortisone injections for Achilles tendinopathy.

Complete rest

“Just stop running” rarely produces durable improvement. The degenerated tendon needs loading to remodel. Patients who go on extended rest deconditioning return to activity and quickly relapse. Modified loading beats total rest.

Ice as primary treatment

Ice has a role for acute flare management (10–15 min after activity). It does NOT address the underlying tendinopathy. Patients who ice for months without progressive loading don’t improve.

Generic “physical therapy”

Physical therapy is great IF the protocol includes structured eccentric loading. Many PT programs default to massage, stretching, and ultrasound modalities that don’t replicate the trial-proven protocol. Ask your PT specifically whether they’re following the Alfredson or Stanish protocol.

FAQ

Can I keep running with Achilles tendinitis?

Often yes, with modifications. The general rule: if pain is below 4/10 during the run AND doesn’t increase the next day, the load is tolerable. Reduce volume to 50% of pre-injury, eliminate hills and speed work, run on softer surfaces. Many patients can maintain ~50–70% of training volume throughout 12 weeks of eccentric rehab.

How long until Achilles tendinitis heals?

Acute tendinitis (<6 weeks of symptoms): typically 4–8 weeks with relative rest. Chronic tendinopathy (>3 months of symptoms): expect 12–16 weeks of dedicated eccentric protocol for substantial improvement. Patients who have had symptoms for >6 months sometimes need 6 months of consistent work to fully resolve.

Should I see a podiatrist or orthopedic surgeon?

Foot and ankle podiatrists (DPM, FACFAS) and foot/ankle orthopedists both treat Achilles tendinopathy well. Look for someone who treats this condition routinely (10+ cases per month), can give you a structured eccentric protocol on the first visit, and has in-office EPAT shockwave available if needed.

Does PRP work for Achilles tendinitis?

Mixed evidence. Some studies show modest benefit; others show no advantage over saline. Currently positioned as a third-line option for patients who have failed correct eccentric loading + EPAT. The cost ($800–1,500 per injection, rarely covered by insurance) doesn’t match the evidence strength compared to EPAT.

Will Achilles tendinitis go away on its own?

Acute tendinitis often resolves with relative rest. Chronic tendinopathy (degenerated tendon) rarely improves without targeted loading. Patients who “wait it out” for chronic Achilles pain usually continue to have symptoms 1–5+ years later. The natural history isn’t favorable; correct treatment is.

Are there exercises I should avoid?

During active rehab:

• Plyometric jumping (depth jumps, box jumps) — high tendon load, low payoff during rehab
• Heavy single-leg calf raises (concentric) — until eccentric phase is well-tolerated
• Deep squats with heels elevated — increases Achilles tension
• Sprinting on hills

Substitutes: pool running, swimming, cycling (especially upright bike), upper-body weight training.

Bottom line

Chronic Achilles tendinitis has a clear, evidence-supported treatment pathway that has been published for 25+ years. The Alfredson eccentric heel drop protocol — done correctly for 12 weeks — resolves ~80% of cases. Most patients who arrive at our office frustrated have never been prescribed the protocol correctly: too few reps, wrong technique (concentric instead of eccentric), or stopping too early.

If you’re 8 weeks into correct loading without improvement, EPAT shockwave is the highest-evidence add-on. Surgery is reserved for the 5–10% of cases who fail comprehensive 6–9 month conservative care. Cortisone injection should be avoided.