Why Does My Achilles Hurt in the Morning? A Foot and Ankle Surgeon Explains

Meta description (156 characters): Morning Achilles pain that eases as you walk is a classic warning sign of tendinopathy. A Dallas foot and ankle surgeon explains causes and proven treatment.

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You swing your legs out of bed, put your feet on the floor, and that first step sends a sharp, stiff ache through the back of your heel. You limp to the bathroom. By the time you've made coffee, it's better. By mid-morning, you've almost forgotten about it.

Then you go for a run, or play a round of pickleball, and that evening the pain is back — worse than before.

If that pattern sounds familiar, you're describing one of the most recognizable presentations in all of sports medicine. Morning pain and stiffness in the Achilles tendon that loosens up with light activity and flares afterward is the textbook signature of Achilles tendinopathy.

Here's why that matters: most people assume this is just soreness that will go away on its own. Many wait months or years. And in that time, the tendon quietly changes — it thickens, weakens, and becomes harder to treat. The good news is that this condition responds very well to the right treatment. The catch is that a lot of the "obvious" treatments — rest, anti-inflammatories, cortisone shots, custom orthotics — either don't work or actively work against you.

This guide explains what's actually happening inside your tendon, how to tell whether you're dealing with something serious, and what the best available research says about getting better.

Key Takeaways

- Morning Achilles pain and stiffness that improves with light activity, then worsens after intense activity, is the hallmark pattern of Achilles tendinopathy. This is the same pattern used by clinicians to make the diagnosis.

- It's degeneration, not inflammation. The old term "tendinitis" is misleading. The tendon's collagen becomes disorganized and weakened, which is why anti-inflammatory approaches fall short.

- Loading exercise is the treatment with the best evidence. Eccentric heel drops and heavy slow resistance training work equally well — pick the one you'll actually do for 12 weeks.

- Location changes everything. Pain 2 to 6 centimeters above the heel bone (midportion) is treated differently than pain right at the heel bone (insertional). Doing the wrong exercise is a top reason treatment fails.

- The evidence does not support several popular treatments. Orthotics, night splints, cortisone injections, and PRP all lack convincing support for this condition.

- Longer symptoms mean longer recovery. People with Achilles tendinopathy carry roughly a 4% risk of eventually rupturing the tendon.

- Waiting it out is the worst strategy. In midportion tendinopathy, essentially every active treatment beat "wait and see" at three months.

Understanding Your Achilles Tendon

The Achilles tendon is the thick cord you can feel at the back of your ankle. It connects your two calf muscles — the gastrocnemius and the soleus — to your heel bone (the calcaneus). It's the largest and strongest tendon in the human body, and it needs to be: with each running stride, it handles forces of several times your body weight.

Three anatomic details explain almost everything about why this tendon gives people trouble.

It Has a Poor Blood Supply in the Middle

About 2 to 6 centimeters above where the tendon attaches to your heel, there's a zone with relatively limited blood flow. This is called the watershed region, and it's exactly where midportion Achilles tendinopathy develops. Less blood supply means slower healing and less capacity to repair the small amounts of damage that daily loading creates.

The Insertion Is a Different Environment

Where the tendon wraps onto the heel bone, it's compressed against the bone every time your ankle bends upward. This makes the insertion vulnerable to a distinct problem — insertional Achilles tendinopathy — and it's the reason stretching and deep heel drops can make insertional pain worse rather than better.

Tendons Adapt Slowly

Muscle responds to training in days to weeks. Tendon takes months. When you increase your mileage, add hill work, or start a new sport, your muscles get stronger faster than your tendon can keep up. That mismatch is where most overuse tendon injuries are born.

Why Is It Worse in the Morning?

This is the question patients ask most, and the answer is fairly intuitive once you understand what's happening in a degenerative tendon.

While you sleep, your foot rests in a pointed-down position and the tendon sits still for seven or eight hours. In a diseased tendon, the collagen fibers are disorganized, and there is often increased fluid and ground substance within the tendon. During a long period of immobility, that tissue essentially sets up — it loses its normal glide and pliability. Your first steps stretch a stiff, dehydrated, poorly organized tendon, which produces pain and a distinct creaky, tight sensation.

Once you walk around for a few minutes, blood flow increases, the tissue becomes more pliable, and the tendon warms up. The pain fades. This is why patients so often say, "It hurts for the first ten minutes and then I'm fine."

That warm-up effect is deceptive. The tendon isn't better — it's just temporarily more comfortable. When you then load it hard, you create more microdamage, and the cycle repeats the following morning, often worse.

How long the morning stiffness lasts is clinically meaningful. Research examining movement-evoked pain in people with Achilles tendinopathy found that a longer duration of morning tendon stiffness was independently associated with greater pain during loading tasks, along with reduced ankle dorsiflexion during walking and higher fear of movement. In practice, this makes morning stiffness duration a useful home tracking tool: as it shortens from thirty minutes to ten to two, treatment is working.

What Causes Achilles Tendinopathy?

The underlying process is failed healing. The tendon sustains repeated microdamage, and the repair response doesn't keep pace. Instead of tightly aligned, parallel collagen, the tendon develops disorganized fibers, increased water content, and abnormal new blood vessel growth. It gets thicker but weaker.

The triggers fall into two groups.

Overload and Training Errors (Extrinsic)

These are the factors you can usually control:

- Sudden increases in volume or intensity — more mileage, more frequency, more days per week

- Adding hill work or speed work too quickly

- Training on hard, sloped, or uneven surfaces

- Worn-out or inappropriate footwear with poor shock absorption

- Returning to a sport after a layoff at your old level rather than building back up

- Cold-weather training, which has been identified as a possible risk factor

Sports involving repeated acceleration, deceleration, and cutting are especially demanding on the Achilles. Running, basketball, tennis, and pickleball are the ones I see most in the office.

Body and Health Factors (Intrinsic)

These are factors within the patient:

- Age — the peak age for midportion tendinopathy is in the early forties

- Male sex and higher body weight

- Calf tightness or reduced ankle dorsiflexion

- Decreased calf strength, specifically reduced plantar flexor strength

- Foot mechanics, including excessive pronation and abnormal roll-over patterns

- Family history — one study found a fivefold increased risk in those with a family history of tendinopathy

- Prior lower limb tendinopathy or fracture

The Medical Causes People Don't Expect

This is worth emphasizing, because it surprises patients: you don't have to be an athlete to get this. In a Dutch population study, only about 35% of midportion Achilles tendinopathy cases had a specific relationship to sporting activity. The rest were in ordinary people going about ordinary lives.

Several medical conditions and medications are associated with Achilles tendon problems:

- Diabetes

- Obesity

- High blood pressure

- High cholesterol and lipid disorders

- Inflammatory arthritis and gout

- Smoking

- Corticosteroid use

- Fluoroquinolone antibiotics (such as ciprofloxacin and levofloxacin) — ofloxacin use in particular has limited evidence supporting an association

- Aromatase inhibitors

- Moderate alcohol use

If you developed Achilles pain without any change in activity, these are worth reviewing with your physician. It's also worth noting that a systematic review of clinical risk factors found the underlying evidence base to be of high risk of bias overall, and that many commonly assumed risk factors — including static foot posture and general physical activity level — were not associated with the condition. The honest summary is that the cause is usually multifactorial rather than any single culprit.

Symptoms: What Achilles Tendinopathy Feels Like

The classic presentation, as described in the American Physical Therapy Association clinical practice guideline, is self-reported localized Achilles pain and perceived stiffness following a period of inactivity such as sleep or prolonged sitting, which lessens with an acute bout of activity and may increase after that activity.

Patients typically report:

- Morning stiffness and pain with the first steps of the day

- Stiffness after sitting through a meeting, a movie, or a long drive

- A warm-up effect — pain that improves during the first part of a run or workout

- Pain that returns worse afterward, often that evening or the next morning

- A thickened, tender area in the tendon that you can feel with your fingers

- A creaky or crunchy sensation when moving the ankle

- Difficulty with hills, stairs, or push-off

- Swelling localized to the tendon

The pain is often described as severe when initiating activity from rest, improving with light activity, then worsening with intense or prolonged activity.

Where Does It Hurt? This Determines Your Treatment

Midportion Tendinopathy	Insertional Tendinopathy
2–6 cm above the heel bone	Directly at the heel bone attachment
Thickened, tender spot in the cord	Tenderness and often a bony bump at the back of the heel
Running, hills, speed work	Shoes with a firm heel counter, deep stretching, uphill walking
Full-range eccentric heel drops off a step	Heel raises limited to a floor-level, neutral range
Strongest — most trials studied this group	Weaker — most trials excluded these patients
Generally favorable with loading	Often slower and more stubborn

This distinction is not academic. Most of the high-quality research on Achilles tendinopathy studied midportion disease — in one living network meta-analysis of 29 randomized trials, 86% of included patients had midportion tendinopathy, and no network meta-analysis could even be performed for insertional disease. It also explains why the standard exercise protocol sometimes backfires: pushing the heel below the step forces the ankle into dorsiflexion, which compresses an already irritated insertion.

If your pain is right at the back of the heel and you can feel a firm bump, read our comparison of Haglund's deformity versus Achilles tendinitis — those two conditions frequently coexist.

When Should You See a Doctor?

Schedule an evaluation if you have:

- Achilles pain lasting more than four to six weeks

- Pain that is limiting your activity, running, or work

- Visible or palpable thickening of the tendon

- Pain that is getting worse despite rest and self-care

- Any weakness pushing off, or difficulty rising onto your toes

- Achilles pain that started after beginning a fluoroquinolone antibiotic

- Pain accompanied by numbness, tingling, or night pain

Referral to a specialist is appropriate for severe symptoms such as inability to walk, or for a lack of improvement after nonoperative treatment including eccentric training.

Seek Urgent Care for These

Certain findings suggest a rupture rather than tendinopathy and need same-day or next-day assessment:

- A sudden pop or snap at the back of the ankle, often with the feeling of being kicked

- New severe pain at the tendon, which may then subside fairly quickly

- Inability to stand on the toes of that leg

- Weakness pushing off the affected foot

- A palpable gap or defect in the tendon

- Bruising at the back of the ankle

A rupture is often mistaken for a sprain because many people can still walk on a completely torn Achilles. If any of this applies, read can you walk on a torn Achilles tendon and Achilles tear versus Achilles tendinitis — and get examined promptly.

One statistic every patient with chronic Achilles pain should know: the risk of Achilles tendon rupture following a diagnosis of Achilles tendinopathy is approximately 4%, with the highest risk in patients aged 50 to 59 (4.3%) and 40 to 49 (3.9%). This is a real reason not to ignore the problem for years.

The Physical Examination

The diagnosis of Achilles tendinopathy is a clinical one. It is made on finding midportion Achilles tenderness to palpation 2 to 6 centimeters proximal to the insertion, along with palpable thickening of that portion of the tendon compared with the unaffected side.

A thorough exam includes:

Palpation. Identifying the exact painful zone and comparing tendon thickness side to side. Thickening is often obvious once you feel both tendons together.

The painful arc sign. The tender area of swelling moves along with the tendon as the ankle is bent up and down. Meta-analysis found this test has a sensitivity of 42% (95% CI, 23%–62%) and specificity of 88% (95% CI, 74%–96%).

The Royal London Hospital test. Tenderness present with the ankle in neutral diminishes when the tendon is put under tension in dorsiflexion. Sensitivity is 54% (95% CI, 34%–73%) and specificity 86% (95% CI, 72%–95%).

Note what those numbers mean: both tests are highly specific but not very sensitive. A positive test strongly supports the diagnosis; a negative test does not rule it out.

Ankle dorsiflexion. In the commonly affected age group of 45 to 69 years, women and men have similar ankle dorsiflexion of roughly 10.6° to 12.9°, but a contracture or tight gastrocnemius may limit this. Measuring dorsiflexion with the knee straight versus bent separates gastrocnemius tightness from a whole-complex contracture, which changes the treatment plan.

Single-leg heel raises. How many can you perform, and how high? This is one of the most useful measures of tendon function and one of the best ways to track progress over months.

Thompson test and gap assessment. Always performed to exclude a rupture.

Imaging: What's Useful and What Isn't

Because the diagnosis is clinical, imaging is used to answer specific questions rather than to make the diagnosis.

X-ray. Fast, inexpensive, and genuinely useful for insertional pain. It shows calcification within the tendon, a spur at the insertion, and a prominent bony bump (a Haglund deformity). Retrocalcaneal enthesophyte on X-ray has been associated with treatment response to shockwave therapy, so it can also influence treatment choice.

Ultrasound. Excellent for the Achilles. It shows tendon thickening, degenerative change, abnormal blood vessel growth, and whether the peritendon or bursa is involved. It's dynamic — the tendon can be examined while moving — and it guides injections. Importantly, imaging abnormalities in tendons that don't hurt are common, and ultrasound abnormalities in asymptomatic tendons have been shown to predict future tendinopathy. Findings must always be interpreted alongside the exam.

MRI. Reserved for specific situations: suspicion of a partial tear, planning surgery, an unclear diagnosis, failure to respond to appropriate treatment, or concern about a coexisting problem. It is the best study for defining the extent of degeneration and the state of the surrounding tissues.

Most patients with a straightforward presentation do not need advanced imaging before starting treatment.

Treatment: What Actually Works

The organizing principle is simple. Tendinopathy is a load problem, and the solution is better load — not the absence of load. Complete rest reduces pain temporarily while making the tendon weaker and less capable, which is why so many patients feel fine on vacation and terrible the week they resume activity.

Activity Modification, Not Shutdown

The goal is to reduce the specific loads that irritate the tendon while maintaining fitness. Practically:

- Cut back on hills, sprints, and plyometrics first — these load the tendon most

- Substitute cycling, swimming, pool running, or an elliptical

- Use a pain-monitoring approach: activity that keeps pain within a tolerable range and settles by the next morning is generally acceptable; pain that lingers or worsens the following morning means you did too much

- Track morning stiffness duration as your primary progress metric

Wait-and-see is specifically not recommended for midportion Achilles tendinopathy — in a living network meta-analysis, essentially every active treatment class appeared superior to wait-and-see at three months, albeit with very low to low certainty of evidence.

Loading Exercise: The Cornerstone

This is the intervention with the strongest support, and it deserves the majority of your effort.

Eccentric heel drops (the Alfredson protocol). In eccentric exercise, the muscle-tendon unit lengthens under load while the muscle is contracting. The technique for midportion disease: stand on a step with all weight on the ball of the foot of the affected leg with the ankle pointed down. Slowly lower the heel to a position beneath the forefoot. Use the uninjured leg to assist the return to the starting position. Perform three sets of 15 repetitions twice daily — first with the knee straight, then repeated with the knee slightly bent.

Heavy slow resistance training (HSR). A 12-week program of three bilateral full-range heel-raise exercises performed slowly, at roughly six seconds per repetition: seated calf raise, standing barbell calf raise, and leg-press calf raise. Load increases while repetitions decrease — week 1 at 3 sets of 15, progressing to 4 sets of 6 by weeks 9 to 12.

Which is better? In a randomized controlled trial of 58 patients published in the American Journal of Sports Medicine, both groups showed significant improvement in VISA-A and pain scores from 0 to 12 weeks, with gains maintained at 52 weeks, along with reductions in tendon thickness and neovascularization — and none of these improvements differed between the two groups. What did differ was adherence: session compliance was 92% in the HSR group versus 78% with eccentric training, and patient satisfaction at 12 weeks trended higher with HSR (100% vs 80%).

Systematic review evidence agrees. Moderate-level evidence favors eccentric exercise over control for pain and function in midportion tendinopathy, and moderate-level evidence favors eccentric over concentric exercise for pain — but there is moderate-level evidence of no significant difference between eccentric exercise and heavy slow resistance training.

Two practical points follow from this. First, higher dose is not better — there was moderate-level evidence that a combined higher-dosage protocol was not superior to a lower-dosage protocol, and no significant difference between high-dose and low-dose eccentric training for pain or function. Second, adherence is the variable that matters most. The best program is the one you'll complete for 12 weeks.

For insertional tendinopathy, the protocol must be modified to avoid dorsiflexion past neutral, since going below the step compresses the insertion. A network meta-analysis of nine trials found eccentric exercise plus soft tissue therapy ranked as the most effective combination for short-term pain in insertional disease — though the authors were explicit that overall confidence in the evidence was very low and no single best option could be recommended.

Medications

NSAIDs may provide temporary pain relief, but the evidence for meaningful benefit is weak. Neither naproxen at three months nor piroxicam at one month showed significant benefit over placebo when added to physical therapy, and a randomized trial of topical 10% diclofenac over four weeks showed no benefit compared with placebo. Use them for short-term comfort if needed, not as treatment.

Oral corticosteroids should be avoided — corticosteroid use is itself associated with Achilles tendon problems.

Heel Lifts, Orthotics, and Braces

A simple heel lift of a quarter to a half inch can reduce tendon strain and often improves symptoms in the short term. It's cheap and harmless, and I frequently use it early on. But it is symptom relief, not a cure, and it should be weaned as strength improves.

Custom orthotics are a different matter. There is high-to-moderate level evidence of no difference in pain (moderate) or function (high) between orthoses and control for Achilles tendinopathy, and the systematic review authors explicitly do not recommend orthoses for improving pain and function in this condition. One retrospective study did find that military recruits issued shock-absorbing insoles had a 50% reduction in Achilles tendinopathy rate (4% vs 8% with rigid insoles), which suggests a possible preventive role distinct from a treatment role.

Night splints are frequently prescribed for morning pain, and the logic seems sound. The evidence does not support it: there is low-level evidence of no significant benefit in adding a night splint to an eccentric exercise program for function and moderate-level evidence for no reduction in pain (MD −3.50, 95% CI −10.49 to 3.48), and the authors conditionally recommend against adding a splint to an eccentric protocol. That said, a related systematic review found that functional improvement with dorsiflexion night splinting or a dual-bladder compression brace was similar to eccentric training, and these may be reasonable options for patients who cannot perform eccentric exercise. Worth knowing: this is one area where the literature is genuinely mixed.

Walking boot immobilization is occasionally used for severely painful tendons, but only briefly, and always as a bridge to loading rather than a destination.

Shockwave Therapy (ESWT)

Extracorporeal shockwave therapy delivers acoustic energy to the tendon and is a reasonable second-line option for patients not responding to a proper exercise program.

The evidence is moderately encouraging but not definitive. A meta-analysis of eight randomized trials with 442 patients found ESWT associated with greater improvement in AOFAS score (SMD 1.35; 95% CI 0.24–2.41; P = .01) and VISA-A score (SMD 1.53; 95% CI 0.69–2.37; P = .0003) — although the VISA-A difference was less than the minimal clinically important difference, and improvements did not decay beyond six months of follow-up.

The APTA guideline's read is more specific: there is evidence that ESWT benefits patients with chronic midportion tendinopathy when combined with eccentric exercise, while the only systematic review to perform a meta-analysis found no effect favoring ESWT alone. Optimal energy dosing remains unclear. A separate GRADE-based review concluded there is low-to-moderate evidence that ESWT has a negligible effect on pain and function for Achilles tendinopathy — in contrast to its clear benefit in plantar fasciitis.

My practical take: ESWT is worth considering as an adjunct to a loading program in a stubborn case, not as a standalone substitute for exercise.

Injections: Where I Am Most Cautious

Corticosteroid injection into or around the Achilles tendon is generally avoided. The evidence of benefit is weak and the concern about tendon weakening and rupture is real.

Platelet-rich plasma (PRP) is heavily marketed and, for the Achilles specifically, poorly supported. A Cochrane review of 18 randomized or quasi-randomized trials with 732 patients assessed VISA-A outcomes across a range of injection therapies — corticosteroid, PRP, hypertonic glucose, and autologous blood — against sham injection, no injection, or other active treatment, and did not establish clear benefit. ESWT has also not proven superior to PRP injection, nor PRP superior to it.

I don't tell patients PRP is worthless. I tell them the honest truth: for Achilles tendinopathy, the high-quality evidence does not currently justify its cost, and any physician who promises otherwise is going beyond what the data show. It should not be the first thing tried, and it should never replace a loading program.

High-volume image-guided injection and other peritendinous approaches are used in refractory cases at specialized centers, but the comparative evidence remains limited.

The broader point from the living network meta-analysis is worth quoting in spirit: at both three and twelve months, there appeared to be no clinically relevant difference in effectiveness between different active treatments — and because exercise therapy is easy to prescribe, low cost, and has few harms, clinicians could reasonably start every patient with a calf-muscle exercise program.

When Is Surgery Needed?

Surgery is for the minority of patients who fail a genuine, well-executed course of nonoperative treatment — and the word "genuine" matters. A patient who did heel drops sporadically for three weeks has not failed conservative care.

Reasonable indications:

- At least six months of appropriate nonoperative treatment, including a supervised loading program, without adequate improvement

- Persistent pain that limits work or meaningful activity

- Significant structural degeneration, calcification, or a partial tear on imaging

- Insertional disease with a large spur or Haglund deformity mechanically irritating the tendon

What surgery aims to do: remove degenerated tendon tissue, address any mechanical impingement (spur or bony prominence removal for insertional disease), reattach or reinforce the tendon as needed, and occasionally lengthen a tight gastrocnemius to reduce strain.

Recovery expectations: longer than most patients anticipate. Insertional procedures generally involve a period of protected weight-bearing in a boot or cast, progression to full weight-bearing over roughly six weeks, higher-level activities such as jogging and jumping starting around 12 weeks, and strenuous sport typically deferred until about six months. Recovery from a repair for a full rupture follows a different timeline — see our Achilles surgery recovery timeline.

Risks include wound healing problems and infection, nerve irritation and numbness, blood clots, stiffness, persistent pain, weakness, and — uncommonly — rupture or failure of the repair. These risks are why the bar for surgery in tendinopathy is set deliberately high.

A candid point about the evidence: there is a lack of high-level comparative research defining a single best surgical technique for Achilles tendinopathy. Technique selection is driven by pathology, surgeon experience, and patient factors rather than by definitive trial data.

Recovery Timeline: What to Expect

These are typical ranges for nonoperative treatment. Individual recovery varies considerably, and longer symptom duration before starting treatment generally predicts a longer recovery.

Timeframe	What to Expect
Weeks 0–2	Begin loading program and activity modification. Pain often unchanged or slightly increased as the tendon adapts. This is normal and not a reason to stop.
Weeks 2–6	Morning stiffness typically begins to shorten. This is usually the first sign of progress — often before pain scores improve.
Weeks 6–12	Meaningful pain reduction and improving single-leg heel raise capacity. Gradual reintroduction of impact activity.
Week 12	The point at which both eccentric and heavy slow resistance protocols showed significant improvement in trials. Most patients are substantially better.
Months 3–6	Continued strengthening and return to full sport. Structural changes including reduced tendon thickness continue to develop.
Month 12	Trial gains at 12 weeks were maintained at 52 weeks, with further improvement in many patients. Maintenance strengthening is recommended indefinitely.

The single most common reason for treatment failure is stopping the program at week four because it "isn't working." At four weeks, it isn't supposed to be working yet.

Prevention

Once you've had Achilles tendinopathy, you're more susceptible to it recurring. Prior lower limb tendinopathy is itself a risk factor. These habits substantially reduce recurrence:

- Progress training gradually. Increase one variable at a time — volume, intensity, or frequency — never all three.

- Keep doing calf strengthening. Two sessions per week of heel raises indefinitely. Reduced plantar flexor strength is a modifiable risk factor.

- Maintain ankle dorsiflexion. Regular calf stretching, with the caveat that aggressive stretching is often counterproductive in insertional disease.

- Warm up properly, especially in cold weather and especially for stop-and-start sports like pickleball and tennis.

- Replace shoes before they're dead, and consider shock-absorbing insoles if you're on hard surfaces frequently.

- Manage the medical contributors — glucose control, weight, lipids, blood pressure, and smoking cessation.

- Ask about fluoroquinolones. If you're prescribed one and you're an active adult, discuss alternatives and avoid heavy tendon loading during and shortly after the course.

- Respect the early warning sign. Two or three days of new morning Achilles stiffness is the moment to modify training — not three months later.

Frequently Asked Questions

Why does my Achilles hurt in the morning but feel fine later?

During sleep the tendon is immobile and its degenerated tissue stiffens. The first steps stretch a stiff tendon, producing pain. Light activity increases blood flow and pliability, so the discomfort fades. The tendon isn't healed — it's warmed up.

Is Achilles pain in the morning always tendinitis?

No. The same pattern can come from insertional tendinopathy, retrocalcaneal bursitis, a Haglund deformity, plantar fasciitis (though that pain is under the heel, not behind it), inflammatory arthritis such as ankylosing spondylitis, or gout. An exam sorts these out, which is why prolonged morning heel pain deserves evaluation rather than guesswork.

Should I stretch my Achilles in the morning?

Gentle ankle motion before standing up usually helps. But aggressive stretching is not a treatment, and in insertional tendinopathy it can worsen symptoms by compressing the tendon against the heel bone. Eccentric loading has moderate-level evidence behind it; low-level evidence found eccentric exercise was not superior to stretching for pain, so stretching isn't useless — it's just not the priority.

How long does Achilles tendinopathy take to heal?

Plan on three months minimum for substantial improvement, since the trials with the best outcomes used 12-week programs, and six to twelve months for full recovery in chronic cases. The longer the symptoms have been present before treatment starts, the longer the recovery.

Can I keep running with Achilles tendinopathy?

Often yes, with modification. Reduce volume, eliminate hills and speed work initially, and use morning stiffness as your guide — if it's worse the next day, you did too much. Complete rest is not the answer, since the tendon needs load to remodel.

Is walking good or bad for Achilles tendinopathy?

Generally good. Walking provides gentle load that supports tendon health without the impact of running. Avoid steep uphill walking early on, particularly with insertional pain.

Will a cortisone shot help my Achilles?

Corticosteroid injection into or around the Achilles is generally avoided because the evidence of benefit is weak and there is concern about tendon weakening and rupture. Corticosteroid use is itself listed among the risk factors for Achilles tendon problems.

Is PRP worth it for Achilles tendinopathy?

The Cochrane review of injection therapies did not establish clear benefit for PRP in Achilles tendinopathy, and ESWT has not proven superior to PRP nor the reverse. It should not be a first-line treatment and should never replace a loading program. Given the cost, patients deserve to hear that plainly.

Do I need an MRI for morning Achilles pain?

Usually not. The diagnosis is clinical. MRI is reserved for suspected partial tears, surgical planning, unclear diagnoses, or failure to improve with proper treatment. Ultrasound is often the more useful and less expensive study.

Can Achilles tendinopathy turn into a rupture?

Yes, though not commonly. The risk of rupture following a diagnosis of Achilles tendinopathy is approximately 4%, highest in the 50-to-59 age group at 4.3%. This is one reason chronic Achilles pain shouldn't be ignored.

What's the difference between Achilles tendinitis and tendinopathy?

"Tendinitis" implies inflammation. What's actually present in chronic cases is degeneration — disorganized collagen, increased fluid, abnormal blood vessels — with little true inflammatory cell infiltrate. "Tendinopathy" is the more accurate term, and it explains why anti-inflammatory treatments underperform. More detail in our article on Achilles tendinitis.

Should I wear a night splint for morning Achilles pain?

The evidence is mixed and, on balance, unsupportive: adding a night splint to an eccentric program showed no significant benefit for pain or function, and systematic review authors conditionally recommend against it. A separate review did find night splinting produced functional improvement similar to eccentric training, so it may have a role for patients who cannot perform loading exercises.

Can Achilles tendinopathy come back after it heals?

Yes. Prior lower limb tendinopathy is a recognized risk factor. Ongoing maintenance strengthening and sensible training progression are the best protection.

Why Does My Achilles Hurt in the Morning? A Foot and Ankle Surgeon Explains

Do I need physical therapy or can I do the exercises myself?

Motivated patients often do well with a clear home program. A therapist adds technique correction, appropriate progression, and accountability — which matter most in the first few weeks when technique errors are common and when the protocol needs to be modified (for example, avoiding below-step drops in insertional disease). If pain isn't improving after six weeks of consistent home exercises, supervised therapy is worth the investment.

When should I worry that my Achilles pain is something more serious?

A sudden pop or snap, a palpable gap in the tendon, inability to rise onto your toes, or new bruising at the back of the ankle all suggest a possible Achilles tendon rupture and warrant urgent evaluation. Night pain, pain at rest unrelated to activity, or pain that doesn't follow the classic warm-up pattern should also prompt a visit.

Myth vs. Fact

Myth	Fact
"It's just tendinitis — some inflammation that will calm down."	Chronic Achilles pain is usually tendinopathy, a degenerative condition with disorganized collagen rather than true inflammation. That's why anti-inflammatory strategies alone don't fix it.
"Rest is the best treatment."	Complete rest weakens the tendon further. Loading exercise is the intervention with the strongest evidence, and activity can usually continue within a self-monitored pain level.
"Ibuprofen will heal my Achilles."	NSAIDs may dull symptoms but haven't shown significant benefit over placebo for Achilles tendinopathy.
"A cortisone shot will fix it fast."	Corticosteroid injection into the Achilles is generally not recommended — evidence is weak and rupture risk is a real concern.
"PRP is the cutting-edge cure."	Despite heavy marketing, high-quality randomized evidence does not support PRP for Achilles tendinopathy.
"A night splint will solve my morning pain."	Adding a night splint to an eccentric exercise program showed no significant benefit for pain or function.
"Custom orthotics are essential."	There is high-to-moderate evidence of no difference between orthoses and control for pain and function.
"If I can walk, it can't be serious."	Many people with complete Achilles ruptures can still walk. Walking ability tells you very little about severity.
"Only runners get this."	Roughly two-thirds of midportion cases have no clear relationship to sporting activity. Diabetes, obesity, smoking, and age are major contributors.
"Surgery is the definitive answer if therapy is slow."	Only about 20% to 29% of patients ultimately fail conservative care, and surgery lacks high-level comparative evidence defining a single best technique.

Research Summary in Plain English

Loading exercise is the treatment that works. The largest systematic review and meta-analysis on the topic — 22 studies and 1,137 participants in the British Journal of Sports Medicine — found moderate-level evidence favoring eccentric exercise over no treatment for pain and function in midportion Achilles tendinopathy, and moderate-level evidence favoring eccentric over concentric exercise for pain.

No single exercise recipe is proven superior. There was no significant difference between eccentric exercise and heavy slow resistance training, and higher-dose eccentric protocols were not significantly better than lower-dose ones. Translation: pick the program you can actually sustain for three months.

Several popular add-ons don't hold up. Orthoses showed no difference from control, and night splints added nothing to an eccentric program. Corticosteroids and PRP have weak evidence and are not recommended in current reviews.

Shockwave therapy is a reasonable second-line adjunct, not a first step. Evidence suggests benefit when combined with eccentric exercise, but not as a standalone treatment.

The diagnosis is clinical. The classic pattern — localized Achilles pain and stiffness after inactivity that eases with light activity and flares afterward, plus tenderness, a positive arc sign, and a positive Royal London Hospital test — is what establishes the diagnosis. Imaging supports the picture; it doesn't replace the exam.

Surgery is for the minority. Approximately 20% to 29% of patients fail conservative treatment and become surgical candidates, with a trend toward minimally invasive techniques because of lower complication rates.

Don't wait it out. In a living network meta-analysis of 29 randomized trials, essentially every active treatment class was superior to wait-and-see at three months. Starting treatment early — before the tendon has undergone extensive structural change — leads to faster recovery.

The Bottom Line

Morning Achilles pain and stiffness that loosens up after a few minutes of walking is the signature of Achilles tendinopathy — a degenerative, load-related tendon problem rather than simple inflammation.

The most important things to take away:

- Get the location right. Midportion and insertional tendinopathy are treated differently, and doing the wrong version of the exercise is a leading reason therapy fails.

- Loading is the treatment. Eccentric heel drops or heavy slow resistance training, done consistently for at least 12 weeks, is what rebuilds the tendon.

- Be skeptical of shortcuts. Cortisone, PRP, orthotics, and night splints are not supported as primary treatments for this condition.

- Don't wait it out. Symptom duration correlates with recovery time, and roughly 4% of patients with Achilles tendinopathy go on to rupture the tendon.

If your morning Achilles pain has lasted more than four to six weeks, is limiting your activity, or you can feel thickening in the tendon, it's time for a proper evaluation by a foot and ankle specialist. Getting the diagnosis and the exercise prescription right at the beginning saves months of frustration.

Related reading: Achilles Tear vs. Achilles Tendinitis · Can You Walk on a Torn Achilles Tendon? · When Do You Need Surgery for an Achilles Tear? · Insertional vs. Midportion Achilles Tendinopathy · Haglund's Deformity vs. Achilles Tendinitis · Achilles Surgery Recovery Timeline · Best Exercises for Achilles Tendon Pain · Returning to Sports After an Achilles Injury

About the Author

Dr. Sarang Desai is a fellowship-trained orthopedic surgeon specializing in foot and ankle surgery and sports medicine in Dallas, Texas. He treats everyone from recreational athletes to elite competitors using the latest evidence-based surgical and nonsurgical techniques.

Schedule an appointment with Dr. Desai at OINT.org or call 972-591-6468.