Achilles Tendon Pain vs. Heel Pain: Which Do You Have in Michigan?

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

Heel pain is one of the most common reasons patients seek podiatric care, but “heel pain” is not a diagnosis — it is a symptom with several distinct causes that require different treatment approaches. The two most common are plantar fasciitis (pain under the heel and arch) and Achilles tendinopathy (pain at the back of the heel and lower leg). Getting the diagnosis right determines whether your treatment actually works. At Balance Foot & Ankle in Southeast Michigan, Dr. Tom Biernacki diagnoses heel pain precisely to ensure every patient gets the right treatment the first time.

Plantar Fasciitis: Pain Under the Heel

Plantar fasciitis is inflammation at the origin of the plantar fascia — the thick band of tissue that runs from the heel bone (calcaneus) across the arch to the toes. The classic symptom is sharp, stabbing pain on the bottom of the heel, worst with the first steps in the morning or after prolonged sitting (the “start-up pain” phenomenon). Pain typically improves somewhat with walking as the fascia warms up, but worsens again with prolonged activity. Tenderness on palpation is maximal at the medial calcaneal tubercle — the inside of the bottom of the heel where the fascia attaches. Heel spurs may be visible on X-ray but are usually not the source of pain. Ultrasound confirms fascial thickening (>4mm) and neovascularization at the enthesis.

Achilles Tendinopathy: Pain at the Back of the Heel

Achilles tendinopathy causes pain at the back of the heel, not underneath. It can be insertional (pain where the Achilles attaches to the calcaneus) or mid-portion (pain in the tendon body 2–6 cm above the insertion). Insertional Achilles tendinopathy is associated with Haglund’s deformity (a bony prominence on the posterior superior calcaneus) and retrocalcaneal bursitis. Mid-portion tendinopathy involves degenerative changes (tendinosis) within the tendon body, typically at the zone of relative avascularity 2–6 cm above the insertion. The pain is reproduced by pressing the back of the heel or the tendon body and by resisted plantarflexion. Ultrasound shows tendon thickening, hypoechoic areas of degeneration, and neovascularization on power Doppler.

Key Differences and Overlaps

The location of pain is the primary distinguishing feature: plantar fasciitis = bottom of heel; Achilles tendinopathy = back of heel or lower leg. However, they can coexist, and both are associated with tight calf muscles (gastrocnemius and soleus tightness increases both plantar fascial tension and Achilles loading). Treatment approaches differ significantly: plantar fasciitis responds to plantar fascia-specific stretching, calf stretching, and custom orthotics with heel padding; Achilles tendinopathy requires eccentric strengthening (the Alfredson protocol for mid-portion; modified eccentric for insertional) and specific footwear management. Corticosteroid injection is useful for plantar fasciitis but is avoided in the Achilles tendon itself due to rupture risk. Shockwave therapy (ESWT) is effective for both conditions but with different treatment parameters.

Frequently Asked Questions

The right treatment starts with the right diagnosis. Contact Balance Foot & Ankle to schedule a heel pain evaluation with Dr. Biernacki in Southeast Michigan.

Differential Diagnosis: What Else Could It Be?

Several conditions share symptoms with Plantar Fasciitis and are commonly misdiagnosed in the first office visit. Considering these alternatives is part of every Balance Foot & Ankle exam:

• Baxter’s neuropathy. Compressed first branch of lateral plantar nerve — burning medial heel pain rather than first-step sharpness.
• Calcaneal stress fracture. Squeeze test of the heel reproduces pain anywhere; PF is reproduced only at the medial-plantar attachment.
• Heel spur (incidental). Spurs show on X-ray but rarely cause pain on their own — treat the fascia, not the spur.

If your symptoms don’t fit the textbook pattern, ask your podiatrist which differentials they ruled out — that conversation often shortcuts months of trial-and-error treatment.

Most Common Mistake We See

The most common mistake we see is: Stretching aggressively before the fascia warms up. Fix: apply heat or move the foot through gentle circles for 3-5 minutes before your first morning steps, then stretch.

Warning Signs That Need Same-Day Care

In-Office Treatment at Balance Foot & Ankle

If home treatment isn’t providing relief for your plantar fasciitis, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.

Frequently Asked Questions

Which is better for plantar fasciitis?

The shoe with more cushioning and a stronger rocker typically wins for plantar fasciitis. See full comparison for our specific verdict.

Which lasts longer?

Both options typically last 300-500 miles for runners or 9-12 months for daily walkers. Material durability varies; check our detailed comparison.

Which is better for flat feet?

Flat feet need stability or motion control. The neutral option is not ideal unless paired with a custom orthotic.

What is Heel pain?

Heel pain is a common foot/ankle condition that affects mobility and quality of life. Understanding the underlying cause is the first step in successful treatment. Our podiatrists at Balance Foot & Ankle perform a hands-on biomechanical exam, review your activity history, and use diagnostic imaging when appropriate to identify the root cause—not just treat the symptom. Many patients have been told to “rest and ice” without a deeper diagnostic workup; our approach is different.

Symptoms and warning signs

Common signs of heel pain include pain that worsens with activity, morning stiffness, swelling, tenderness when palpated, and difficulty bearing weight. If you experience sudden severe pain, inability to walk, visible deformity, numbness or color change, contact our office the same day or visit urgent care—these can signal a more serious injury such as a fracture, tendon rupture, or vascular compromise. Diabetics with any foot wound should seek same-day care.

Conservative treatment options

Most cases of heel pain respond to non-surgical care: structured rest, supportive footwear changes, custom orthotics, targeted stretching and strengthening protocols, anti-inflammatory medications when medically appropriate, and in-office procedures such as ultrasound-guided injections. We also offer advanced therapies including MLS laser therapy, EPAT/shockwave, regenerative injections, and image-guided procedures. Treatment is sequenced from least invasive to most invasive, and we explain the rationale at every step.

When is surgery considered?

Surgery is reserved for cases that fail 3-6 months of well-structured conservative care, when there is structural pathology (severe deformity, complete tear, advanced arthritis), or when imaging shows damage that will not heal without intervention. Our surgeons have performed 3,000+ foot and ankle procedures and prioritize minimally-invasive techniques whenever appropriate. We discuss recovery timelines, return-to-activity milestones, and realistic outcome expectations before any procedure is scheduled.

Recovery timeline and prevention

Recovery from heel pain varies based on severity and chosen treatment path. Conservative cases often improve within 4-8 weeks with consistent adherence to the protocol. Post-procedural recovery may range from a few days (in-office procedures) to several months (reconstructive surgery). Long-term prevention involves footwear assessment, activity modification, structured strengthening, and regular check-ins with your podiatrist if you have a history of recurrence. We provide written home-exercise plans and digital follow-up support.