Heel Spur vs Plantar Fasciitis: What’s Actually Causing Your Pain?

Your doctor just told you that you have a heel spur on your X-ray. Now you are wondering: is the spur causing my pain, or is it plantar fasciitis? Do I need surgery to remove it? Is this going to get worse? These are exactly the right questions — and the answers will probably surprise you.

At Balance Foot & Ankle, we diagnose and treat heel pain every day. The heel spur versus plantar fasciitis confusion is one of the most common misunderstandings we encounter — and it matters because getting it wrong leads to the wrong treatment. Let me clear it up.

Table of Contents

• What Is Plantar Fasciitis?
• What Is a Heel Spur?
• Key Differences: Heel Spur vs Plantar Fasciitis
• How Are They Diagnosed?
• Treatment: What Actually Works
• Do You Need Surgery for a Heel Spur?
• Warning Signs You Need to See a Podiatrist
• Frequently Asked Questions

What Is Plantar Fasciitis?

Plantar fasciitis is inflammation or degeneration of the plantar fascia — the thick band of connective tissue that runs along the bottom of your foot, connecting your heel bone (calcaneus) to your toes. It acts like a bowstring, maintaining the arch of your foot under load.

When the fascia is repeatedly overstretched — due to tight calves, flat feet, high arches, unsupportive footwear, or sudden increases in activity — micro-tears develop at the insertion point on the heel bone. The body’s attempt to repair those micro-tears creates inflammation, and that inflammation causes the classic sharp, stabbing heel pain that is worst with the first steps in the morning.

Plantar fasciitis is the diagnosis in approximately 80% of all heel pain cases we see in our clinic. It is one of the most common musculoskeletal complaints in adults.

What Is a Heel Spur?

A heel spur (technically a calcaneal spur) is a calcium deposit that forms on the underside of the heel bone. It is not a spike or a sharp object — on X-ray, it looks like a small hook or ledge extending from the calcaneus, typically 0.5 to 2 centimeters long.

Here is the key fact most patients do not know: heel spurs form as a response to chronic plantar fascia tension, not the other way around. When the fascia repeatedly pulls on the heel bone over months or years, the body deposits calcium along the lines of stress. The spur is a marker that chronic tension has been present — it is the body trying to reinforce a repeatedly stressed area.

Studies show that roughly 10–15% of the general population has a heel spur on X-ray, but the majority of those people have zero pain. The spur itself is almost never the direct cause of pain.

Key Differences: Heel Spur vs Plantar Fasciitis

The distinction between heel spurs and plantar fasciitis comes down to a few critical points. Here is a side-by-side comparison of what we look for in our clinical evaluation:

	Plantar Fasciitis	Heel Spur
What it is	Inflammation/degeneration of the plantar fascia	Calcium deposit on the heel bone
Primary cause of pain?	Yes — in 95% of heel pain cases	Rarely, if ever, the direct cause
Visible on X-ray?	No (soft tissue)	Yes
Visible on ultrasound?	Yes — fascia thickening	Yes — bony prominence
Morning pain	Classic symptom	Not specific to spur
Responds to conservative care?	90%+ within 12 months	Does not need treatment
Needs surgery?	Rarely (<5% of cases)	Almost never

How Are They Diagnosed?

Diagnosing heel pain accurately requires more than just an X-ray. In our clinic, we use a combination of clinical examination and imaging to determine what is actually causing pain — because the source of pain drives the treatment decision.

Clinical Examination

The most reliable test for plantar fasciitis is point tenderness at the medial calcaneal tubercle — the bony bump where the fascia attaches to the heel. We press that spot; if it reproduces your exact pain, plantar fasciitis is the working diagnosis. We also assess calf flexibility, arch type, foot mechanics, and gait pattern to identify contributing factors.

X-Ray

X-rays are useful for ruling out stress fractures and other bony pathology, and they will show a heel spur if present. However, a heel spur on X-ray does not change the diagnosis or treatment if the clinical picture is plantar fasciitis. We do not treat the spur — we treat the fascia.

Diagnostic Ultrasound

Ultrasound is our preferred imaging tool for plantar fasciitis because it shows the soft tissue directly. A plantar fascia thickness greater than 4mm (normal is about 3–3.5mm) confirms pathology. It also shows whether the tissue is actively inflamed versus showing degenerative change — which is important because those two conditions need different treatments. Ultrasound can also guide injections to the exact site of pathology.

Treatment: What Actually Works

Because the heel spur is not the pain source, treatment targets the plantar fascia exclusively. The good news: plantar fasciitis responds very well to conservative care in the vast majority of cases.

First-Line Treatment (Weeks 1–6)

• Plantar fascia-specific stretching: Before your first step each morning, pull your toes back toward your shin for 30 seconds. Repeat 3 times. This is the single most evidence-backed home treatment for reducing morning pain.
• Calf stretching: Tight calf muscles are the most common biomechanical driver. Stretch against a wall, 3 sets of 30 seconds, both straight-knee and bent-knee.
• Supportive footwear: A shoe with a firm midsole, deep heel cup, and 8–12mm heel-to-toe drop. Avoid flip-flops, flat shoes, and barefoot walking on hard floors.
• Over-the-counter orthotics: Look for a firm arch support with a deep heel cup. Superfeet Green or similar semi-rigid insoles are a reasonable starting point.
• Activity modification: Reduce high-impact loading (running, jumping). Swimming and cycling are excellent substitutes.

Second-Line Treatment (Months 2–4)

• Night splints: Keep the fascia and calf in a stretched position overnight. Most patients see a measurable reduction in morning pain within 2–3 weeks.
• Custom foot orthotics: For patients with flat feet, high arches, or significant overpronation, custom orthotics address the underlying mechanical cause and reduce recurrence.
• Eccentric calf exercises: Single-leg heel drops off a step, 3 sets of 15 daily — the most effective exercise-based treatment for chronic cases.
• Corticosteroid injection: Provides short-term relief but should not be used more than 2–3 times; repeated injections can weaken the fascia.

Advanced Treatment for Chronic Cases (6+ Months)

• Extracorporeal shockwave therapy (ESWT): Sound-wave technology that stimulates tissue repair. Strong evidence for chronic plantar fasciosis. No incision, no downtime.
• Platelet-rich plasma (PRP) injection: Concentrates your own growth factors and injects them into degenerating tissue. Increasingly preferred over cortisone for chronic cases.
• Minimally invasive plantar fasciotomy: A small release of the fascia under ultrasound guidance, done in-office under local anesthesia. Reserved for cases that have failed all of the above.

Do You Need Surgery to Remove a Heel Spur?

Almost certainly not. This is one of the most common questions I get after a patient sees a heel spur on their X-ray, and the answer is almost always the same: the spur is not causing your pain, so removing it will not fix your pain.

Studies examining outcomes of heel spur removal consistently show no benefit over treating the plantar fascia alone. When surgeons do perform plantar fasciotomy for refractory plantar fasciitis, they do not remove the spur — they release the fascia. The spur stays and the pain resolves.

There is a specific and rare variant called a Haglund deformity (a heel spur at the back of the heel, where the Achilles tendon inserts) that can cause insertional Achilles tendinitis and may occasionally need surgical treatment. But the classic inferior heel spur seen on the bottom of the heel in the context of plantar fasciitis pain? It is almost never operated on.

Warning Signs: When to See a Podiatrist

Frequently Asked Questions

Can a heel spur go away on its own?

Heel spurs do not dissolve once formed — calcium deposits are permanent bony changes. However, because the spur itself is not the pain source, this does not matter for your recovery. Successfully treating plantar fasciitis resolves the pain, and the spur remains on X-ray without causing any further problems.

Can you have a heel spur without plantar fasciitis?

Yes. Studies show that 10–15% of the population has a heel spur on X-ray with no heel pain whatsoever. The spur is simply a radiographic finding — it does not require treatment in the absence of symptoms. Many patients discover their spur incidentally during imaging for an unrelated issue.

Is plantar fasciitis worse than a heel spur?

This framing is a bit of a false comparison since a heel spur is typically a consequence of longstanding plantar fasciitis. In terms of what needs treatment, plantar fasciitis is the clinical problem requiring management. A heel spur in isolation almost never needs treatment. If both are present — which is common — treating the plantar fasciitis is what resolves the pain.

What does a heel spur feel like?

The classic description of plantar fasciitis pain (which usually coexists with a heel spur when one is present) is a sharp, stabbing pain at the bottom of the heel, worst with the first steps in the morning or after prolonged sitting. The pain typically eases after a few minutes of walking, then can return with extended time on your feet. The spur itself does not have a unique pain signature separate from the associated plantar fasciitis.

How long does it take to recover from a heel spur?

Recovery time depends on the severity of the plantar fasciitis, not the spur. Mild cases resolve in 6–8 weeks with appropriate treatment. Moderate cases take 3–6 months. Severe or chronic cases can take 6–18 months. The spur remains throughout — recovery means resolving the plantar fasciitis pain, not eliminating the bony deposit.

The bottom line: If you have been told you have a heel spur, do not let it distract you from treating the real problem — plantar fasciitis. The spur is a bystander. The fascia is the patient. Focus your treatment there, and in the vast majority of cases you will make a full recovery without surgery. If you are in Michigan and want an accurate diagnosis and a treatment plan tailored to your specific anatomy, we offer same-day appointments at both our Howell and Bloomfield Hills locations.

Sources

1. Johal KS, Milner SA. Plantar fasciitis and the calcaneal spur: Fact or fiction? Foot Ankle Surg. 2012;18(1):39–41.
2. Trojian T, Tucker AK. Plantar Fasciitis. Am Fam Physician. 2019;99(12):744–750.
3. Cutts S, Obi N, Pasapula C, Chan W. Plantar fasciitis. Ann R Coll Surg Engl. 2012;94(8):539–542.
4. Saber N, Diab H, Nassar W, Razaak HA. Ultrasound guided local steroid injection versus extracorporeal shockwave therapy in the treatment of plantar fasciitis. Alexandria J Med. 2012;48(1):35–42.
5. League AC. Current concepts review: plantar fasciitis. Foot Ankle Int. 2008;29(3):358–366.

Frequently Asked Questions

When should I see a podiatrist?

If symptoms persist past 2 weeks, affect your normal activity, or are accompanied by red-flag symptoms (warmth, redness, swelling, inability to bear weight).

What does treatment cost?

Most diagnostic visits and conservative treatments are covered by Medicare and major insurers. Out-of-pocket costs vary by your specific plan.

How quickly can I get an appointment?

Most non-urgent cases see us within 5 business days. Urgent cases (sudden pain, possible fracture) typically same or next business day.